Digital pressure gauge based on MPX2100 circuit diagram

Published:2014/3/25 21:34:00 Author:lynne | Keyword: Digital pressure gauge based on MPX2100 circuit diagram, MPX2100 | From:SeekIC

Digital pressure gauge based MPX2100 Digital pressure gauge MPX2100 configured as shown. MPX2100 operating voltage of 12V, the pressure between the sensor signal output 4 feet and 2 feet to IC1, IC2 amplification, amplifier gain is 1 +40 / RP1, IC1, IC2 connected to non-inverting input impedance state, the instrument can be obtained required high input impedance amplifier; IC3 is a unity gain differential amplifier, which can achieve high CMRR, IC4 and RP2 voltage divider circuit zeroing circuitry, RP1 used to adjust the gain of the amplifier circuit to complete the full digital display of pressure calibration range. IC3 output voltage to the A / D converter analog input voltage terminal IC5 (31 feet), the digital conversion by IC5 to drive LED display size of the pressure.



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