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Pressure sensor MPX220

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abdoalghareeb

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HI ..................................................................................................................................

I have this pressure sensor View attachment mpx2200.pdf

it's supply voltage 10 V DC and it has two pressure input and two voltage output
The differential voltage output is directly proportional to the differential pressure applied
When differential pressure = 0 KPa , each voltage output = 5.2 V DC and differential voltage output =0 V
When differential pressure = 200 KPa, the differential voltage output = 40 mV

So

I need a suitable interface amplifier circuit to AVR Mega16 micro controller (ADC input).

THANKS .............................................................................................................................
 

If you want to use the full 10 bit ADC resolution need to add external amplifiers (on the ATmega 16 side there’s also a Differential Input Channel with optional gain of 10x and 200x, but if 200x gain is used, 7-bit resolution can be expected.)
See some examples for instrumentation amplifiers interface circuits here, on page two:

**broken link removed**

Changing value for R10 you may adjust the gain (in the actual schematics gain is set for a nominal value of 125).
 
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