sensor interface with pwm output

[iladuran]

sensor with pwm output

Hi everybody!

I have to design a pressure sensor interface with a pwm output signal (open collector); the input signal comes from a wheatstone bridge.
The supply voltage is 5V and the operative temperature range is -40 to 140 °C.

Any suggestions?

 

[vicky]

HI ILADRUN

THE OUT PUT OF THE SENSOR GIVES YOU OUTPUT DATA VIA COMPUTRE OR THROUGH ANY DISPLAY, ALSO GET A KNOWLEDGE ABOUT THE PRESSURE SOME SORT OF PRESSURE CALIBRATOR ALSO THE DIA OF THE PRESSURE SENSOR SHOULD ALSO BE CALIBRATED THAN YOU GOT YOUR DESIRE RESULTS

 

[iladuran]

Hi Vicky,
thanks for your reply.

The pressure sensure is a piezoresistive wheatstone bridge with a sensitivity of 2mV/V @FS. The supply voltage is 5V.
I need both an output voltage from 0.5V to 4.5V and a PWM output.

The circuit must have an offset and gain calibration and optionally a temperature drift compensation (the sensure pressure is already compensated).