CN203930003U - A kind of simulating signal excitation system for chip detection - Google Patents
A kind of simulating signal excitation system for chip detection Download PDFInfo
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- CN203930003U CN203930003U CN201420298343.6U CN201420298343U CN203930003U CN 203930003 U CN203930003 U CN 203930003U CN 201420298343 U CN201420298343 U CN 201420298343U CN 203930003 U CN203930003 U CN 203930003U
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Abstract
The utility model discloses a kind of simulating signal excitation system for chip detection, comprise digital to analog converter DAC, multichannel input selection driver, multi-channel linear amplifier, multichannel output driver, resistor voltage divider circuit and analog to digital converter ADC; Multichannel input selection driver is connected with digital to analog converter DAC, multi-channel linear amplifier respectively; Multichannel output driver is connected with multi-channel linear amplifier, multichannel output driver first via output terminal is connected with outside detected chip, its the second road output terminal is connected with one end of resistor voltage divider circuit, and the other end of resistor voltage divider circuit is connected with analog to digital converter ADC.The utility model is by being converted into the detection signal of chip to be detected after simulating signal, amplify by impedance transformation, signal amplification, electric current, finally give chip to be measured by the simulating signal obtaining, so, make detection signal to improve to greatest extent its measurement accuracy, cost, also can guarantee the accuracy of detection signal.
Description
Technical field
The utility model relates to electronic technology field, in particular a kind of simulating signal excitation system for chip detection.
Background technology
In prior art, most of modulus hybrid chip are all to adopt to detect than the special test equipment of higher-end.The detection signal of test procedure generally is digital signal, digital signal needs after digital-to-analog conversion for chip to be measured, at present, not also a lot of at this class special test equipment of China, the cost of use of equipment is all higher, and test period is all long, particularly concerning the higher chip of some function complexity, measurement accuracy, need special testing apparatus to process detection signal, the detection signal that measurement accuracy is high just can be provided, and, because special testing apparatus is few, test period will be longer, and corresponding testing expense and production cost improve.
Therefore, there is defect in prior art, needs to improve.
Utility model content
Technical problem to be solved in the utility model is: provide a kind of cost low, can improve the simulating signal excitation system for chip detection of the measurement accuracy of the detection signal of chip to be measured.
The technical solution of the utility model is as follows: a kind of simulating signal excitation system for chip detection, comprises digital to analog converter DAC, multichannel input selection driver, multi-channel linear amplifier, multichannel output driver, resistor voltage divider circuit and analog to digital converter ADC; The input end of multichannel input selection driver is connected with the output terminal of digital to analog converter DAC, and its output terminal is connected with the input end of multi-channel linear amplifier; The input end of multichannel output driver is connected with the output terminal of multi-channel linear amplifier, and, it also arranges two-way output terminal, wherein first via output terminal is connected with outside detected chip, its the second road output terminal is connected with one end of resistor voltage divider circuit, and the other end of resistor voltage divider circuit is connected with analog to digital converter ADC.
Be applied to technique scheme, in described simulating signal excitation system, digital to analog converter DAC and analog to digital converter ADC are built in respectively an ARM chip internal, and multichannel input selection driver, multi-channel linear amplifier, multichannel output driver, resistor voltage divider circuit be integrated being arranged on a simulating signal stimulating module respectively.
Adopt such scheme, the utility model is by being converted into the detection signal of chip to be detected after simulating signal, carry out impedance transformation by multichannel input selection driver, obtain the simulating signal of certain driving force, deliver in multi-channel linear amplifier, carry out signal amplification, obtain the required voltage of chip to be measured, deliver to again multichannel output driver and carry out electric current amplification, obtain the outputting analog signal of enough drive currents, give again chip to be measured and carry out metrology operation, so, make the detection signal of giving chip to be measured to improve to greatest extent the degree of accuracy of its simulating signal, in the time being applied to chip detection, can to detection chip detection signal process after, be directly used in detection chip performance, thereby without using special inspecting equipment, detection signal is processed, reduce costs, and, when sending detection signal, can also contrast the detection signal of exporting and the detection signal of former input by other equipment, guarantee the accuracy of detection signal.
Brief description of the drawings
Fig. 1 is syndeton schematic diagram of the present utility model.
Fig. 2 is application schematic diagram of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated.
The present embodiment provides a kind of simulating signal excitation system for chip detection, by simulating signal excitation system, the signal for detection of chip is processed, thereby is obtained detection signal that measurement accuracy is high to chip to be detected.
As shown in Figure 1, simulating signal excitation system comprises digital to analog converter DAC, multichannel input selection driver, multi-channel linear amplifier, multichannel output driver, resistor voltage divider circuit and analog to digital converter ADC, digital to analog converter DAC is by for being converted to simulating signal by the detection signal of detection chip from digital signal, then send in the multichannel input selection driver being connected with its output terminal, the input end of multichannel input selection driver is connected with the output terminal of digital to analog converter DAC, and, the output terminal of multichannel input selection driver is connected with the input end of multichannel pmultiple amplifier, the detection signal that it is simulating signal from digital to analog converter DAC that multichannel input selection driver receives, the analog voltage of detection signal is carried out to impedance transformation, after impedance transformation through multichannel input selection driver, can obtain the simulating signal of certain driving force, and then simulating signal is delivered in multi-channel linear amplifier.
The input end of multi-channel linear amplifier is connected with the output terminal of multichannel input selection driver, the output terminal of multi-channel linear amplifier is connected with the input end of multichannel output driver, multi-channel linear amplifier carries out signal amplification to the simulating signal after multi-channel linear amplifier transforming impedance, obtain the required voltage of chip to be measured, deliver to again multichannel output driver and carry out electric current amplification, obtain the simulating signal of enough drive currents, then send to chip to be measured to carry out metrology operation.
Wherein, multichannel output driver arranges two-way output terminal, wherein first via output terminal is connected with outside detected chip, for the simulating signal that has enough drive currents obtaining is sent to chip to be measured, the second road output terminal of multichannel output driver is connected with one end of resistor voltage divider circuit, and the other end of resistor voltage divider circuit is connected with analog to digital converter ADC.
Multichannel output driver sends to the detection signal for simulating signal after chip to be measured, also by the second road output terminal, detection signal is sent to resistor voltage divider circuit, by obtaining the simulating signal of scaled down after resistor voltage divider circuit dividing potential drop, delivering in analog to digital converter ADC, by analog to digital converter, ADC is converted into digital signal, so, can the digital signal of digital signal and former input be contrasted by external unit, can verify the accuracy of output signal, ensure the precision measuring.
Or, as shown in Figure 2, in use, digital to analog converter DAC and analog to digital converter ADC can be built in respectively to an ARM chip internal, and, by multichannel input selection driver, multi-channel linear amplifier, multichannel output driver, resistor voltage divider circuit integrated being set on a simulating signal stimulating module respectively, the other end of simulating signal stimulating module is connected with chip DUT to be measured.So, can input digital detection signal from outside by the pin of ARM chip to digital to analog converter DAC, and, be converted into after digital signal at analog to digital converter ADC, can contrast processing by the processing module of ARM chip, and, ARM chip and simulating signal stimulating module can concentrated setting on a pcb board, small volume, is convenient for carrying.
These are only preferred embodiment of the present utility model, be not limited to the utility model, all any amendments of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (2)
1. for a simulating signal excitation system for chip detection, it is characterized in that:
Comprise digital to analog converter DAC, multichannel input selection driver, multi-channel linear amplifier, multichannel output driver, resistor voltage divider circuit and analog to digital converter ADC;
The input end of multichannel input selection driver is connected with the output terminal of digital to analog converter DAC, and its output terminal is connected with the input end of multi-channel linear amplifier;
The input end of multichannel output driver is connected with the output terminal of multi-channel linear amplifier, and, it also arranges two-way output terminal, wherein first via output terminal is connected with outside detected chip, its the second road output terminal is connected with one end of resistor voltage divider circuit, and the other end of resistor voltage divider circuit is connected with analog to digital converter ADC.
2. simulating signal excitation system according to claim 1, it is characterized in that, digital to analog converter DAC and analog to digital converter ADC are built in respectively an ARM chip internal, and multichannel input selection driver, multi-channel linear amplifier, multichannel output driver, resistor voltage divider circuit be integrated being set on a simulating signal stimulating module respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420298343.6U CN203930003U (en) | 2014-06-05 | 2014-06-05 | A kind of simulating signal excitation system for chip detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420298343.6U CN203930003U (en) | 2014-06-05 | 2014-06-05 | A kind of simulating signal excitation system for chip detection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203930003U true CN203930003U (en) | 2014-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420298343.6U Expired - Fee Related CN203930003U (en) | 2014-06-05 | 2014-06-05 | A kind of simulating signal excitation system for chip detection |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108989963A (en) * | 2018-07-11 | 2018-12-11 | 杭州爱华仪器有限公司 | A kind of multifrequency point static excitation calibrating installation and its working method |
| CN110780182A (en) * | 2019-09-24 | 2020-02-11 | 苏州华兴源创科技股份有限公司 | System and method for detecting LCD/OLED driving chip |
| CN110932726A (en) * | 2019-11-21 | 2020-03-27 | 江苏旭微科技有限公司 | A kind of analog-to-digital converter verification method |
-
2014
- 2014-06-05 CN CN201420298343.6U patent/CN203930003U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108989963A (en) * | 2018-07-11 | 2018-12-11 | 杭州爱华仪器有限公司 | A kind of multifrequency point static excitation calibrating installation and its working method |
| CN110780182A (en) * | 2019-09-24 | 2020-02-11 | 苏州华兴源创科技股份有限公司 | System and method for detecting LCD/OLED driving chip |
| CN110932726A (en) * | 2019-11-21 | 2020-03-27 | 江苏旭微科技有限公司 | A kind of analog-to-digital converter verification method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141105 Termination date: 20150605 |
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| EXPY | Termination of patent right or utility model |