Little signal precision measurement circuit
The utility model discloses a little signal precision measurement circuit, including a biosensor, the 2nd biosensor, the 3rd biosensor, fourth biosensor, a difference amplifier, the 2nd difference amplifier, the 3rd difference amplifier, ADC amplifier chip and singlechip. A biosensor and the 2nd bio...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The utility model discloses a little signal precision measurement circuit, including a biosensor, the 2nd biosensor, the 3rd biosensor, fourth biosensor, a difference amplifier, the 2nd difference amplifier, the 3rd difference amplifier, ADC amplifier chip and singlechip. A biosensor and the 2nd biosensor of second input connection are connected to a difference amplifier's first input end, the 3rd biosensor and second input connection fourth biosensor are connected to the 2nd difference amplifier's first input end, the 3rd difference amplifier's first input end is connected to a difference amplifier's output, and the 3rd difference amplifier's second input is connected to the 2nd difference amplifier's output, ADC amplifier chip's input is connected to the 3rd difference amplifier's output, and the singlechip is connected to ADC amplifier chip's output. Implement this utility model little signal precision measurement circuit can go out the small signal by the accurate measurement.
本实用新型公开了种微信号精密测量电路，包括第生物传感器、 |
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