CN106936401A - High performance operational amplifier is may be programmed after one kind encapsulation - Google Patents
High performance operational amplifier is may be programmed after one kind encapsulation Download PDFInfo
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- CN106936401A CN106936401A CN201710157811.6A CN201710157811A CN106936401A CN 106936401 A CN106936401 A CN 106936401A CN 201710157811 A CN201710157811 A CN 201710157811A CN 106936401 A CN106936401 A CN 106936401A
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- 238000005538 encapsulation Methods 0.000 title claims abstract description 24
- 238000012360 testing method Methods 0.000 claims abstract description 21
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000002474 experimental method Methods 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 3
- 238000009966 trimming Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000012827 research and development Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 230000009897 systematic effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/002—Control of digital or coded signals
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Abstract
The invention discloses programmable high performance operational amplifier after one kind encapsulation, including chip body, external test circuitry module, external data selecting module and external clock, the chip body is made up of power supply, operational amplifier body, shift register and reset circuit module, the output end of the external data selecting module and external clock is connected with the positive input pin and negative input pin of operational amplifier body, and the output end of the external data selecting module and external clock is connected with two switches respectively.High performance operational amplifier is may be programmed after the encapsulation, by to the improvement inside chip body, under the collective effect of outside test circuit module, external data selecting module, external clock, operational amplifier body, switch, shift register and reset circuit module, the product that different model and performance can be produced on same set of light shield is reached, so as to the R＆D costs of chip are greatly lowered.
Description
Technical field
The present invention relates to operational amplifier techniques field, high performance operational amplifier is may be programmed after specially a kind of encapsulation.
Background technology
Operational amplifier is widely used in consumer electronics device, communication equipment, in industrial control system and medical device.
Because operational amplifier application field is widely, but each application has different demands to the performance of operational amplifier, than
It is the operational amplifier of 12MHz or so such as to need to use unity gain bandwidth on electronic whiteboard, and is needed on electric tool
Use operational amplifier that unity gain bandwidth is 500KHz or so etc., the operation amplifier of substantially every kind of unity gain bandwidth
Device has certain application market, in order to because to different system applications, research and development company needs the operation amplifier to every kind of bandwidth
Device will development ＆ production.Some applications are not singly that operational amplifier unity gain bandwidth is required, also to input offset voltage
There is required precision, so the operational amplifier of every kind of bandwidth may again need different input offset voltages, therefore in the market to transport
Calculate amplifier chip species various, if every kind of operational amplifier is required for independent flow, operational amplifier can be caused to research and develop enterprise
Industry R＆D costs and production, management cost are high.
Although each application system has different technology and performance requirements to operational amplifier, in fact for same type
Every kind of different bandwidth amplifier amplifier for, structure and most of internal components are identicals, it is only necessary to some inside
The parameter of device does local fine setting can just reach different performances, and the local part for trimming can will be needed to connect using switch
Connect and disconnect the performance requirement to meet different system to operational amplifier.Technology before is with the metal connecting line of top
Change come realize switch connection or disconnect or trimmed before encapsulation, this be accomplished by chip flow production
When different reticle plates are produced according to different amplifier performances, cause research and development and production cost enterprise high, while in order to distinguish
Different light shield versions, also the handling of goods and materials to enterprise brings certain difficulty, if trimmed before encapsulation, needs
Extra trims pin, and testing cost can be increased while increasing area.
The content of the invention
（One）The technical problem of solution
In view of the shortcomings of the prior art, the invention provides may be programmed high performance operational amplifier after one kind encapsulation, possess in fortune
Calculate and switch data program is write by chip to the performance requirement of operational amplifier according to application system after amplifier package is completed,
The characteristics of so as to meet systematic difference demand, solve when the flow of background technology chips is produced according to different amplifiers
Can and produce the problem of different reticle plates.
（Two）Technical scheme
To realize object above, the present invention is achieved by the following technical programs：High performance computation is may be programmed after one kind encapsulation
Amplifier, including chip body, external test circuitry module, external data selecting module and external clock, the chip body
It is made up of power supply, operational amplifier body, shift register and reset circuit module, the external data selecting module and outer
The output end of portion's clock is connected with the positive input pin and negative input pin of operational amplifier body, the external data selection
The output end of module and external clock is connected with two switches respectively, the output end of the switch and the input of shift register
Connection, the output end of the shift register is connected with the input of operational amplifier body, the output end difference of the power supply
Input with reset circuit module and operational amplifier body is connected, the output end and shift LD of the reset circuit module
The input connection of device, the output end of the external test circuitry module is connected with the input of external data selecting module.
Preferably, the reset circuit module can be opened when whole chip is powered by reset shift register and simultaneously
The switch that positive input pin and negative input pin are connected.
Preferably, the operational amplifier body by a basic amplifier and many idle transistors, resistance and
Electric capacity is constituted.
Preferably, the output end of the operational amplifier body is connected with the input of external device.
Preferably, two switch in parallel of the output end connection of the external data selecting module and external clock.
High performance operational amplifier, including following implementation steps are may be programmed after one kind encapsulation：
S1：After energization, data that reset circuit will be stored in shift register all reset, and open positive input pin and
The switch that negative input pin is connected so that the digital control part connection of positive input pin and negative input pin and inside, its
Middle negative input pin is connected to the Clock control end of shift register by switch, and positive input pin is connected to displacement by switch
The data input pin of register；
S2：Serial mode is moved into shift register by shift register under the cooperation of clock, when all of in shift register
Data are all updated after finishing, and the switch that positive input pin and negative input pin are connected will be closed, and whole chip is complete
Into emulation mode；
S3：Experiment proves whether the data of write-in meet demand, because the switch that input pin is connected is closed mode, therefore
As test environment now is with normal operational amplifier body, if test result shows that state now does not meet
Application demand, then re-execute the first step and second step, re-writes a new data, until the data fit application for writing
Demand；
S4：After test searches out the data for meeting application, this data is write into shift register, and to Digital Logic
Control section sends and trims instruction, and trimming instruction will blow or keep according to the data stored in shift register by fuse
Original state, and the switch that input pin is connected forever closes, and when chip is once again powered up afterwards, the two switches also keep closing
Closed state.
（Three）Beneficial effect
The invention provides programmable high performance operational amplifier after one kind encapsulation.Possesses following beneficial effect：
High performance operational amplifier is may be programmed after the encapsulation, is possessed after operational amplifier encapsulation is completed according to application system pair
Switch data program is write chip by the performance requirement of operational amplifier, the characteristics of so as to meet systematic difference demand, is solved
The flow of background technology chips produces the problem of different reticle plates according to different amplifier performances when production, by right
Improvement inside chip body, in outside test circuit module, external data selecting module, external clock, operational amplifier sheet
Under the collective effect of body, switch, shift register and reset circuit module, having reached can produce difference on same set of light shield
The product of model and performance, so as to the R＆D costs of chip are greatly lowered, same can also be greatly lowered research and development enterprise
The operation of industry and handling of goods and materials cost, R ＆ D Enterprises can write different programs according to the market demand to operational amplifier,
To meet the order requirements of different clients.
Brief description of the drawings
Fig. 1 is operational amplifier principle system figure of the present invention；
Fig. 2 is operational amplifier programming flow diagram of the present invention.
In figure：1 chip body, 2 power supplys, 3 external test circuitry modules, 4 external data selecting modules, 5 external clocks, 6
Operational amplifier body, 7 switches, 8 shift registers, 9 reset circuit modules.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Fig. 1-2 is referred to, the present invention provides a kind of technical scheme：High performance operational amplifier is may be programmed after one kind encapsulation,
Including chip body 1, external test circuitry module 3, external data selecting module 4 and external clock 5, chip body 1 is by power supply
2nd, operational amplifier body 6, shift register 8 and reset circuit module 9 are constituted, external data selecting module 4 and external clock
5 output end is connected with the positive input pin and negative input pin of operational amplifier body 6, the He of external data selecting module 4
The output end of external clock 5 is connected with two switches 7 respectively, and the output end of switch 7 is connected with the input of shift register 8,
The output end of shift register 8 is connected with the input of operational amplifier body 6, the output end of power supply 2 respectively with reset circuit
The input connection of module 9 and operational amplifier body 6, reset circuit module 9 can post displacement when whole chip is powered
The switch 7 that storage 8 is resetted and opening positive input pin and negative input pin are connected simultaneously, the output end of reset circuit module 9
Input with shift register 8 is connected, the output end of external test circuitry module 3 and the input of external data selecting module 4
End connection.
Operational amplifier body 6 is made up of a basic amplifier and many idle transistors, resistance and electric capacity, fortune
The output end for calculating amplifier body 6 is connected with the input of external device；By control be switched in or out these idle transistors,
Resistance and electric capacity can be used to realize certain optimized good operational amplifier.
The positive input pin and negative input pin of multiplexing operational amplifier body 6, operational amplifier, chip flow and seal
Information after dress when link is tested according to required for application demand write-in；The positive input pin of operational amplifier body 6 and
Two input pins, by internal control circuit, are set to figure pattern by negative input pin when being just initially powered up, and are made
Obtaining an input pin can be input to chip internal by clock, and another input pin can exist required configuration information
Chip internal is delivered under the control of clock, after required information completely write-in, two input pins enter digital mould
The switch of formula will thoroughly disconnect, then later in practical application, two input pins enter into figure pattern never again when upper electric,
And can only only be operated in emulation mode as normal operational amplifier chip.
Two switches 7 of the output end connection of external data selecting module 4 and external clock 5 are in parallel.
High performance operational amplifier, including following implementation steps are may be programmed after one kind encapsulation：
S1：After energization, the data that reset circuit will be stored in shift register 8 all reset, and open positive input pin
The switch 7 connected with negative input pin so that the digital control part connection of positive input pin and negative input pin and inside,
Wherein negative input pin is connected to the Clock control end of shift register 8 by switch 7, and positive input pin is connected by switch 7
To the data input pin of shift register 8；
S2：Serial mode is moved into shift register 8 by shift register 8 under the cooperation of clock, when all in shift register 8
Data all update and finish after, the switch 7 that positive input pin and negative input pin are connected will be closed, and whole chip is complete
Enter emulation mode entirely；
S3：Experiment proves whether the data of write-in meet demand, because the switch 7 that input pin is connected is closed mode, because
As this test environment now is with normal operational amplifier body 6, if test result shows state now not
Meet application demand, then re-execute the first step and second step, re-write a new data, until the data fit for writing
Application demand；
S4：After test searches out the data for meeting application, this data is write into shift register 8, and patrol to numeral
Volume control section sends and trims instruction, trim instruct fuse will be blown according to the data stored in shift register 8 or
Maintain the original state, and the switch 7 that input pin is connected forever is closed, when chip is once again powered up afterwards, the two switches 7
Remain off, operational amplifier chip fusing Fuse carry out controlling switch and be switched in or out be after the package has been finalized, and
Technology before not being needs to complete before encapsulation.
In sum, high performance operational amplifier is may be programmed after the encapsulation, is possessed after operational amplifier encapsulation is completed
Switch data program is write by chip to the performance requirement of operational amplifier according to application system, so as to meet systematic difference need
The characteristics of asking, solves to produce different reticle plates according to different amplifier performances when the flow of background technology chips is produced
Problem, by the improvement inside chip body 1, outside test circuit module 3, external data selecting module 4, it is outside when
Under clock 5, operational amplifier body 6, the collective effect of switch 7, shift register 8 and reset circuit module 9, having reached can be
The product of different model and performance is produced on same set of light shield, it is same so as to the R＆D costs of chip are greatly lowered
Operation and the handling of goods and materials cost of R ＆ D Enterprises can be greatly lowered, R ＆ D Enterprises can be put according to the market demand to computing
Big device writes different programs to meet the order requirements of different clients.
It should be noted that herein, such as first and second or the like relational terms are used merely to a reality
Body or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or deposited between operating
In any this actual relation or order.And, term " including ", "comprising" or its any other variant be intended to
Nonexcludability is included, so that process, method, article or equipment including a series of key elements not only will including those
Element, but also other key elements including being not expressly set out, or also include being this process, method, article or equipment
Intrinsic key element.In the absence of more restrictions.By sentence " including one ... the key element for limiting, it is not excluded that
Also there is other identical element in the process including the key element, method, article or equipment ".
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding can carry out various changes, modification, replacement to these embodiments without departing from the principles and spirit of the present invention
And modification, the scope of the present invention be defined by the appended.
Claims (6)
1. high performance operational amplifier, including chip body may be programmed after a kind of encapsulation（1）, external test circuitry module（3）, it is outer
Portion's data selecting module（4）And external clock（5）, it is characterised in that：The chip body（1）By power supply（2）, operational amplifier
Body（6）, shift register（8）And reset circuit module（9）Composition, the external data selecting module（4）And external clock
（5）Output end with operational amplifier body（6）Positive input pin and the connection of negative input pin, external data selection
Module（4）And external clock（5）Output end respectively with two switch（7）Connection, the switch（7）Output end posted with displacement
Storage（8）Input connection, the shift register（8）Output end and operational amplifier body（6）Input connection,
The power supply（2）Output end respectively with reset circuit module（9）With operational amplifier body（6）Input connection, it is described
Reset circuit module（9）Output end and shift register（8）Input connection, the external test circuitry module（3）'s
Output end and external data selecting module（4）Input connection.
2. high performance operational amplifier may be programmed after a kind of encapsulation according to claim 1, it is characterised in that：The reset
Circuit module（9）Can be when whole chip be powered by shift register（8）Reset and opening positive input pin is defeated with negative simultaneously
Enter the switch that pin is connected（7）.
3. high performance operational amplifier may be programmed after a kind of encapsulation according to claim 1, it is characterised in that：The computing
Amplifier body（6）It is made up of a basic amplifier and many idle transistors, resistance and electric capacity.
4. high performance operational amplifier may be programmed after a kind of encapsulation according to claim 1, it is characterised in that：The computing
Amplifier body（6）Output end be connected with the input of external device.
5. high performance operational amplifier may be programmed after a kind of encapsulation according to claim 1, it is characterised in that：The outside
Data selecting module（4）And external clock（5）Output end connection two switch（7）It is in parallel.
6. high performance operational amplifier may be programmed after a kind of encapsulation, it is characterised in that including following implementation steps：
S1：After energization, reset circuit is by shift register（8）The data of middle storage all reset, and open positive input pipe
The switch that pin and negative input pin are connected（7）So that the digital control part of positive input pin and negative input pin and inside
Connection, wherein negative input pin are by switch（7）It is connected to shift register（8）Clock control end, positive input pin passes through
Switch（7）It is connected to shift register（8）Data input pin；
S2：Shift register（8）Serial mode is moved into shift register under the cooperation of clock（8）, work as shift register（8）
In after all of data all update and finish, the switch that positive input pin and negative input pin are connected（7）Will be closed, it is whole
Individual chip is completely into emulation mode；
S3：Experiment proves whether the data of write-in meet demand, because the switch that input pin is connected（7）It is closed mode,
Therefore test environment and normal operational amplifier body now（6）It is the same, if test result shows shape now
State does not meet application demand, then re-execute the first step and second step, re-writes a new data, until the data for writing
Meet application demand；
S4：After test searches out the data for meeting application, this data is write into shift register（8）, and to numeral
Logic control part sends and trims instruction, and trimming instruction will be according to shift register（8）Middle stored data blow fuse
Or maintain the original state, and the switch that input pin is connected（7）It is permanent to close, when chip is once again powered up afterwards, the two
Switch（7）Also remain off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710157811.6A CN106936401B (en) | 2017-03-16 | 2017-03-16 | Programmable high-performance operational amplifier after packaging |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710157811.6A CN106936401B (en) | 2017-03-16 | 2017-03-16 | Programmable high-performance operational amplifier after packaging |
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| CN106936401A true CN106936401A (en) | 2017-07-07 |
| CN106936401B CN106936401B (en) | 2021-06-29 |
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| CN106936401B (en) | 2021-06-29 |
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