CN117691996A - Method and device for rapidly detecting current rudder type DAC current source errors and electronic equipment - Google Patents

Method and device for rapidly detecting current rudder type DAC current source errors and electronic equipment Download PDF

Info

Publication number
CN117691996A
CN117691996A CN202211070511.1A CN202211070511A CN117691996A CN 117691996 A CN117691996 A CN 117691996A CN 202211070511 A CN202211070511 A CN 202211070511A CN 117691996 A CN117691996 A CN 117691996A
Authority
CN
China
Prior art keywords
current
signal
sub
square wave
frequency
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202211070511.1A
Other languages
Chinese (zh)
Inventor
曹梦涛
周磊
刘新宇
吴旦昱
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Institute of Microelectronics of CAS
Original Assignee
Institute of Microelectronics of CAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Institute of Microelectronics of CAS filed Critical Institute of Microelectronics of CAS
Priority to CN202211070511.1A priority Critical patent/CN117691996A/en
Publication of CN117691996A publication Critical patent/CN117691996A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/10—Calibration or testing
    • H03M1/1071—Measuring or testing
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/66—Digital/analogue converters
    • H03M1/74—Simultaneous conversion
    • H03M1/742—Simultaneous conversion using current sources as quantisation value generators

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Measurement Of Current Or Voltage (AREA)

Abstract

The invention provides a method, a device and electronic equipment for rapidly detecting the current source error of a current steering DAC (digital-to-analog converter), which are characterized in that square wave signals formed by compounding N sub-signals with different frequencies are generated, the conduction of a power switch of a current source matched with a high level in the current steering DAC is controlled based on the amplitude of the high level in the collected square wave signals, and a frequency spectrum detection device is adopted to collect and display the square wave signals and the output current value of the current steering DAC, so that the rapid detection of the output current value of the current steering DAC is realized, and the change condition of the current value of the current source on a frequency spectrum graph is obvious.

Description

Method and device for rapidly detecting current rudder type DAC current source errors and electronic equipment
Technical Field
The invention relates to the technical field of integrated circuits, in particular to a method and a device for rapidly detecting errors of a current source of a current steering DAC and electronic equipment.
Background
Digital-to-analog converters (DACs) have received much attention in recent years as interfaces between digital systems and the analog world, and in the development of DACs, current-steering DACs have been widely used due to their high-speed characteristics and advantages of driving capability, but in current-steering DACs, a large number of current sources are required, in current-steering DACs, accurate current sources are key to ensuring circuit performance, and the accuracy of operation of one current source depends on the degree of matching of transistors, but mismatch of transistors due to non-ideal factors such as edge effects, oxide effects, mobility effects, etc. in the actual process manufacturing is unavoidable, so how to rapidly detect errors of current sources is an important problem.
Disclosure of Invention
In view of the above, the embodiments of the present invention provide a method, an apparatus, and an electronic device for fast detecting a current source error of a current steering DAC, so as to fast detect an output current of a current source of the current steering DAC.
In order to achieve the above object, the embodiment of the present invention provides the following technical solutions:
a current steering DAC current source error rapid detection method comprises the following steps:
acquiring a square wave signal, wherein the square wave signal is formed by compounding N sub-signals with different frequencies, the high-level amplitude of each sub-signal is different, and N is a positive integer greater than 1;
when a high-level signal of a certain sub-signal is detected to arrive, a power switch of a current source in the current steering DAC, which is matched with the sub-signal, is controlled to be conducted;
and acquiring and displaying the square wave signal and the output current value of the current steering DAC by adopting a frequency spectrum detection device.
Optionally, in the method for fast detecting current source errors of a current steering DAC, the width of each high level in the square wave signal is the same as the width of each low level.
Optionally, in the current steering DAC current source error rapid detection method, the magnitudes of the N sub-signals are distributed in an arithmetic progression.
Optionally, in the method for rapidly detecting a current source error of a current steering DAC, the N sub-signals are recorded as a first sub-signal to an nth sub-signal;
among the first to N-th sub-signals, the frequency of the former sub-signal is X times that of the latter sub-signal, and X is greater than 1.
Optionally, in the current steering DAC current source error rapid detection method, the frequency of the first sub-signal is 1Mhz, and the value of N is 8.
Optionally, in the method for rapidly detecting the current source error of the current steering DAC, the method further includes:
after the square wave signal is acquired by the spectrum detection device, the spectrum detection device is further used for:
detecting the frequency values of the N acquired sub-signals;
modulating the frequency of the sub-signal with the frequency value lower than the preset frequency, so that the frequency of the modulated sub-signal is larger than the preset frequency.
Optionally, in the method for rapidly detecting the current source error of the current steering DAC, the method further includes:
judging whether the difference value of the output current values of the current steering DACs acquired by the frequency spectrum detection devices at two adjacent moments is larger than a preset value, and marking the moment when the difference value of the current values is larger than the preset value current in the acquired output current values of the current steering DACs when the difference value of the current values is larger than the preset value.
Optionally, in the method for fast detecting current source errors of a current steering DAC, N high-level signals are provided in one period of the square wave signal, and the amplitude of the latter high-level signal is Y times of the amplitude of the former high-level signal, where Y is greater than 0 and not equal to 1.
A current steering DAC current source error rapid detection device comprises:
the square wave signal generator is used for generating a square wave signal, the square wave signal is formed by compounding N sub-signals with different frequencies, the amplitude of the high level of each sub-signal is different, and N is a positive integer greater than 1;
the switch controller is used for controlling the power switch of a current source matched with a certain sub-signal in the current steering DAC to be conducted when the arrival of a high-level signal of the sub-signal in the square wave signal is detected;
and the frequency spectrum detection device is used for collecting and displaying the square wave signals and the output current value of the current steering DAC.
An electronic device is provided with the current steering DAC current source error rapid detection device.
Based on the technical scheme, the square wave signal formed by compounding the N sub-signals with different frequencies is generated, the power switch of the current source matched with the high level in the current steering DAC is controlled to be conducted based on the amplitude of the high level in the collected square wave signal, the square wave signal and the output current value of the current steering DAC are collected and displayed by the frequency spectrum detection device, so that the rapid detection of the output current value of the current steering DAC is realized, and the change condition of the current value of the current source on a spectrogram is obvious.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an N-bits thermometer code DAC;
fig. 2 is a schematic flow chart of a current steering DAC current source error fast detection method disclosed in the embodiments of the present application;
FIG. 3 is a schematic diagram of a process for constructing a special square wave signal;
FIG. 4 is a schematic diagram of an image display on top of a spectrogram;
FIG. 5 is a schematic diagram of the signal modulation principle;
FIG. 6 is a schematic diagram showing the comparison of modulation before and after;
fig. 7 is a schematic structural diagram of a current steering DAC current source error fast detection device according to an embodiment of the disclosure.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention mainly provides a mode for rapidly detecting current source errors in a current steering DAC based on a frequency spectrum detection device. In binary code or thermometer code or segmented current rudder DAC, there are many current sources, if a traditional current source detection mode is used, all current sources need to be detected one by one, the traditional detection mode mainly uses an ammeter to measure the current magnitude of each current source, so that the detection efficiency is very low, and when the difference between the value of the measured current source and the current value of the reference is very small, the measured current source is not easy to be separated out in detection, and detection failure is likely to be caused. The invention provides a method for rapidly detecting a current source by adopting a frequency spectrum detection device, the current value change condition of the current source on a frequency spectrum chart is obvious, the change of a detection result at a point with small current value change of the current source is obvious, the reaction speed is high, and the efficiency is high.
In a current steering DAC, the current source is controlled to be turned on mainly by a switch, the current is converted into voltage output through a load resistor after the switch is turned on, as shown in fig. 1, a schematic diagram of an N-bits thermometer code DAC is shown in a conventional test mode, a specific digital code is input, then a high-precision multimeter measuring result is used, a detection mode using a spectrum detection device is proposed, a specific square wave signal is constructed according to the difference of the opening voltages of the switch, and the switch is controlled to be turned on by using the specific square wave signal, so that the amplitude information of the current source corresponding to the specific frequency can be seen on the spectrum detection device.
Specifically, referring to fig. 2, the current steering DAC current source error fast detection method disclosed in the embodiments of the present application may include steps S101 to S103.
Step S101: a square wave signal is obtained.
In this scheme, the square wave signal is a composite signal, the signal is formed by compositing N sub-signals with different frequencies, the amplitude of the high level of each sub-signal is different, and N is a positive integer greater than 1.
The form of the square wave signal is shown as a special square wave signal in fig. 3, and frequencies f, f/2 and f/4 in fig. 3 correspond to different signals respectively.
After the square wave signal is obtained by the spectrum detection device, the display result in the spectrum detection device is shown in fig. 4, and the positions corresponding to the frequencies f, f/2, f/4 and f/8 shown in fig. 4 are respectively used for displaying the current values acquired by the spectrum detection device when the high level of the corresponding sub-signal arrives.
Step S102: when a high level signal of a certain sub-signal is detected to arrive, a power switch of a current source matched with the sub-signal in the current steering DAC is controlled to be conducted.
In the scheme, the amplitude of the high level of each sub-signal is different, the mapping relation between the high level of each sub-signal and the power switch in each current steering DAC is configured in advance, the power switches corresponding to the high level signals with different amplitude levels are different, and when the high level signal with the amplitude level is detected, the power switch corresponding to the high level signal is controlled to enter a conducting state.
Step S103: and acquiring and displaying the square wave signal and the output current value of the current steering DAC by adopting a frequency spectrum detection device.
In this step, the output current value of the current steering DAC is detected and displayed by using a spectrum detection device, and because the generating frequencies of the high levels of the amplitudes in the square wave signal are different, the spectrum detection device detects a plurality of sub-signals, and acquires the output current value obtained by the current steering DAC when the power switch corresponding to the high level amplitude of each sub-signal is turned on, and displays the output current value in the area corresponding to the sub-signal.
In the scheme, the square wave signals formed by compounding the N sub-signals with different frequencies are generated, the power switch of the current source matched with the high level in the current steering DAC is controlled to be conducted based on the amplitude of the high level in the collected square wave signals, the square wave signals and the output current value of the current steering DAC are collected and displayed by the frequency spectrum detection device, so that the output current value of the current steering DAC is rapidly detected, and the current value change condition of the current source on the frequency spectrum graph is obvious.
Specifically, in this scheme, each sub-signal in the constructed square wave signal is used to control the conduction states of different current sources in the current steering DAC, the spectrum detection device may sample the square wave signal based on the frequency adapted to each sub-signal, and if the sampling frequency is f, the amplitude of the sampled square wave signal is m, at this time, the opening of the first current source in the current steering DAC may be controlled, and the spectrum detection device may display the amplitude information of the current acquired when the frequency is f on the spectrum graph, and when the sampling frequency is f/2, the amplitude of the square wave signal is n 1 (n 1 ！＝m，n 1 Can be a value of 2m or 3m, etc. which is not equal to m), at this time, the starting of the first two current sources in the current steering DAC can be controlled, and the amplitude information of the current collected at this time is displayed on the spectrogram on the spectrum detection device, and similarly, it is assumed that the amplitude of the sampled square wave signal is n when the sampling frequency is f/4 2 (n 2 Different from the first two amplitude values), the opening of the first three current sources is controlled, the amplitude of the collected current is displayed on a spectrogram on the spectrum detection device, and the detection is performed by analogy, so that the detection of a plurality of current sources can be completed only by constructing one square wave signal in the form.
When the number of bits of the current steering DAC is relatively large, the current steering DAC may have a plurality of current sources, so that in order to avoid that the spectrum detection device cannot display excessive amplitude information, the current steering DAC may be used to detect only a limited number of current sources at a time, it may be assumed that 8 or 16 current sources may be detected at a time, at this time, the corresponding square wave signal is formed by combining 8 or 16 sub-signals with different frequencies, and when two different sub-signals are high-level signals at the same position, the position of the square wave signal is a high-level signal of a sub-signal with a relatively high amplitude, so that the current sources of the current steering DAC may be detected several times, that is, a plurality of square wave signals may be generated, and the magnitudes of the high levels of the square wave signals may be different, so that the situation that the spectrum detection device cannot display excessive data is avoided, and the detection efficiency is relatively fast compared with the conventional detection method. The idea of constructing a special square wave is to have a standard square wave with frequency f, then construct an irregular square wave signal with frequency f/2, construct an irregular square wave signal with frequency f/4, and so on, finally accumulate the square wave signals to form a special square wave signal for detecting a current source in a DAC, and the process of constructing the special square wave signal is shown in figure 3. The image information displayed on the spectrum sensing device is shown in fig. 4.
In another embodiment of the present application, in order to make the measurement result of the spectrum detection apparatus more accurate, in the technical solution disclosed in this embodiment of the present application, the width of each high level and the width of each low level in the square wave signal are the same, further the magnitudes of the high levels of the N sub-signals may be distributed in an arithmetic progression, if the N sub-signals are recorded as a first sub-signal to an nth sub-signal, the frequency of the first sub-signal to the nth sub-signal is X times that of the subsequent sub-signal, and the X is greater than 1, for example, when X is 2, the frequency of the first sub-signal is 1Mhz, and the frequency of the subsequent frequency-divided sub-signal is 1Mhz/2 2 The frequency of the next frequency-divided sub-signal is 1Mhz/2 3 If the value of N is 8, the frequency of the last sub-signal isAt this time, there are N high level signals in one period of the square wave signal, and the amplitude of the latter high level signal is Y times that of the former high level signal, the value of Y being greater than 0 and not equal to 1. By normalizing the width of the high and low levels of the square wave signalThe display result of the frequency spectrum detection device is more normalized.
When the special square wave signal is constructed, the frequency of the first sub-signal is not very high, when the frequency division is carried out to obtain the next sub-signal, if the multiple of the frequency division is very large, the frequency of the last frequency division result is very small, thus the difference between the frequency of the last frequency-divided Nth sub-signal and the frequency of the first sub-signal at the beginning is very large, assuming that the frequency f=1Mhz of the first sub-signal, 8 data are detected each time, the frequency division coefficient is in units of 2, and then the frequency of the last frequency-divided Nth sub-signal isThe frequency of the beginning and the frequency of the last divided nth sub-signal are not in the order of one unit, a large span of a frequency interval appears when the frequency is displayed on the spectrum detection device, and the spectrum detection device generally detects a high-frequency signal, so that in order to make the detection result displayed on the spectrum detection device more accurate, the detected sub-signal needs to be modulated, the sub-signal with a relatively low frequency needs to be moved to the high-frequency interval, and therefore, a high-frequency signal (modulation signal) needs to be multiplied by the tested low-frequency signal to be moved to the high-frequency space, a specific modulation principle is shown in fig. 5, and the result before and after modulation is shown in fig. 6, therefore, in the scheme, after the spectrum detection device is adopted to collect the square wave signal, the method is further used for: detecting the frequency values of the N acquired sub-signals, and modulating the frequency of the sub-signals with the frequency values lower than the preset frequency so that the frequency of the modulated sub-signals is greater than the preset frequency.
In the technical scheme disclosed in another embodiment of the present application, in order to better remind a user of an abnormality in a current value of a current source acquired by a spectrum detection device, in this scheme, the method further includes:
judging whether the difference value of the output current values of the current steering DACs acquired by the frequency spectrum detection devices at two adjacent moments is larger than a preset value, and marking the moment when the difference value of the current values is larger than the preset value current in the acquired output current values of the current steering DACs when the difference value of the current values is larger than the preset value.
The embodiment discloses a current steering type DAC current source error rapid detection device, and specific working contents of each unit in the device are disclosed, please refer to the contents of the method embodiment.
The current steering DAC current source error rapid detection device provided by the embodiments of the present invention is described below, and the current steering DAC current source error rapid detection device described below and the current steering DAC current source error rapid detection method described above may be referred to correspondingly with each other.
Corresponding to the above method, the present application also discloses a current steering DAC current source error rapid detection device, see fig. 7, which may include:
the square wave signal generator A corresponds to the step S101 in the method and is used for generating a square wave signal, the square wave signal is formed by compounding N sub-signals with different frequencies, the amplitude of the high level of each sub-signal is different, and N is a positive integer greater than 1;
a switch controller B, corresponding to step S102 in the above method, configured to control, when detecting that a high level signal of a certain sub-signal in the square wave signal arrives, on a power switch of a current source in the current steering DAC adapted to the sub-signal;
and the frequency spectrum detection device C is used for acquiring and displaying the square wave signal and the output current value of the current steering DAC, and corresponds to the step S103 in the method.
Corresponding to the above method, the above apparatus may further include:
and the comparator is used for judging whether the difference value of the output current values of the current steering DAC acquired by the frequency spectrum detection device at two adjacent moments is larger than a preset value, and when the difference value of the output current values of the current steering DAC acquired at two adjacent moments is larger than the preset value, marking the moment when the difference value of the current values is larger than the preset value current.
Corresponding to the device, an electronic device is characterized in that the current steering type DAC current source error rapid detection device of claim 9 is applied.
In summary, compared with the traditional method for detecting the current of the current source in the current steering DAC by adopting the voltmeter and the ammeter, the invention innovatively provides a method for rapidly detecting the current source in the current steering DAC by adopting the frequency spectrum detection device, so that the detection speed is greatly improved.
Because the frequency spectrum detection device has the advantages of wide detection range, obvious amplitude information change and the like, the current sources can be detected very quickly, and a plurality of frequency information can be displayed on the frequency spectrum detection device, so that the plurality of current sources can be detected once, the detection efficiency is improved, and the amplitude information of the plurality of current sources can be observed once. And the actual data size of the current source can be obviously displayed on the frequency spectrum detection device when a small difference exists between the actual data size and the ideal data size, so that the detection result is more accurate. Because the on frequency of the switch is different when the test is performed, the frequency spectrum information displayed under a certain specific frequency can accurately correspond to a specific current source, and in order to avoid that the frequency interval span is too large when the frequency spectrum detection device is displayed, the frequency spectrum is shifted, so that the frequency range is in a unit magnitude, and the detection result is more accurate.
For convenience of description, the above system is described as being functionally divided into various modules, respectively. Of course, the functions of each module may be implemented in the same piece or pieces of software and/or hardware when implementing the present invention.
In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments. In particular, for a system or system embodiment, since it is substantially similar to a method embodiment, the description is relatively simple, with reference to the description of the method embodiment being made in part. The systems and system embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative elements and steps are described above generally in terms of functionality in order to clearly illustrate the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. The software modules may be disposed in Random Access Memory (RAM), memory, read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
It is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The current steering DAC current source error rapid detection method is characterized by comprising the following steps of:
acquiring a square wave signal, wherein the square wave signal is formed by compounding N sub-signals with different frequencies, the high-level amplitude of each sub-signal is different, and N is a positive integer greater than 1;
when a high-level signal of a certain sub-signal is detected to arrive, a power switch of a current source in the current steering DAC, which is matched with the sub-signal, is controlled to be conducted;
and acquiring and displaying the square wave signal and the output current value of the current steering DAC by adopting a frequency spectrum detection device.
2. The method for fast detecting current source errors of a current steering DAC according to claim 1, wherein the width of each high level and the width of each low level in the square wave signal are the same.
3. The method for quickly detecting errors of current steering DAC current sources according to claim 1, wherein the magnitudes of the N sub-signals are distributed in an arithmetic progression.
4. The method for quickly detecting the current source error of the current steering DAC according to claim 1, wherein the N sub-signals are recorded as a first sub-signal to an Nth sub-signal;
among the first to N-th sub-signals, the frequency of the former sub-signal is X times that of the latter sub-signal, and X is greater than 1.
5. The method of claim 4, wherein the first sub-signal has a frequency of 1Mhz and the value of N is 8.
6. The method for quickly detecting the current source error of the current steering DAC according to claim 1, further comprising:
after the square wave signal is acquired by the spectrum detection device, the spectrum detection device is further used for:
detecting the frequency values of the N acquired sub-signals;
modulating the frequency of the sub-signal with the frequency value lower than the preset frequency, so that the frequency of the modulated sub-signal is larger than the preset frequency.
7. The method for quickly detecting the current source error of the current steering DAC of claim 6, further comprising:
judging whether the difference value of the output current values of the current steering DACs acquired by the frequency spectrum detection devices at two adjacent moments is larger than a preset value, and marking the moment when the difference value of the current values is larger than the preset value current in the acquired output current values of the current steering DACs when the difference value of the current values is larger than the preset value.
8. The method of claim 6, wherein there are N high level signals in one period of the square wave signal, and the amplitude of the latter high level signal is Y times the amplitude of the former high level signal, and Y is greater than 0 and not equal to 1.
9. The utility model provides a quick detection device of current rudder formula DAC current source error which characterized in that includes:
the square wave signal generator is used for generating a square wave signal, the square wave signal is formed by compounding N sub-signals with different frequencies, the amplitude of the high level of each sub-signal is different, and N is a positive integer greater than 1;
the switch controller is used for controlling the power switch of a current source matched with a certain sub-signal in the current steering DAC to be conducted when the arrival of a high-level signal of the sub-signal in the square wave signal is detected;
and the frequency spectrum detection device is used for collecting and displaying the square wave signals and the output current value of the current steering DAC.
10. An electronic device, wherein the current steering DAC current source error rapid detection device of claim 9 is applied.
CN202211070511.1A 2022-09-02 2022-09-02 Method and device for rapidly detecting current rudder type DAC current source errors and electronic equipment Pending CN117691996A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211070511.1A CN117691996A (en) 2022-09-02 2022-09-02 Method and device for rapidly detecting current rudder type DAC current source errors and electronic equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211070511.1A CN117691996A (en) 2022-09-02 2022-09-02 Method and device for rapidly detecting current rudder type DAC current source errors and electronic equipment

Publications (1)

Publication Number Publication Date
CN117691996A true CN117691996A (en) 2024-03-12

Family

ID=90128762

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211070511.1A Pending CN117691996A (en) 2022-09-02 2022-09-02 Method and device for rapidly detecting current rudder type DAC current source errors and electronic equipment

Country Status (1)

Country Link
CN (1) CN117691996A (en)

Similar Documents

Publication Publication Date Title
US8493080B2 (en) Test system and method
CN105259528B (en) A kind of the internal calibration circuit and calibration method of microwave power probe
CN206193081U (en) Signal source, oscilloscope , universal meter all -in -one based on FPGA
EP1771948A1 (en) Digital-to-analogue converter system with increased performance
JP4664837B2 (en) Voltage and other effective value calculation circuit and measuring instrument
Dallet et al. Dynamic characterisation of analogue-to-digital converters
CN114121140A (en) Chip testing method, system, electronic device and storage medium
EP3791191B1 (en) Differential current sensing with robust path, voltage offset removal and process, voltage, temperature (pvt) tolerance
US20170060114A1 (en) Finite state machine-based trigger event detection employing interpolation
JP2009264753A (en) Harmonics measuring apparatus
CN104251932A (en) Method and system for measuring sinusoidal voltage signals
CN105680859A (en) ADC built-in self-test circuit in system on chip and test method
Tewksbury et al. Terminology related to the performance of S/H, A/D, and D/A circuits
CN105471431A (en) Method for testing differential linearity error and integral linearity error of analog to digital converter
CN102638263A (en) Testing device and corresponding testing method
CN117691996A (en) Method and device for rapidly detecting current rudder type DAC current source errors and electronic equipment
Chiang et al. A CMOS integrated capacitance-to-frequency converter with digital compensation circuit designed for sensor interface applications
Fowler Part 7: analog-to-digital conversion in real-time systems
CN1625841A (en) Digital-to-analog converter with integrated test circuit
US7664621B2 (en) System and method for mapping system transfer functions
Bellan et al. ADC nonlinearities and harmonic distortion in FFT test
Balestrieri et al. Research trends and challenges on DAC testing
Kallel et al. Discrete interval binary sequence for stable and stationary impedance spectroscopy of Li-ion batteries
JPH0643192A (en) Ac power supply device
CN103267896B (en) Method for measuring initial phase angle of periodic signal

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication