PGA300EVM-034: PGA300EVM-034

Hello,

Is it possible that the sensor you are using has a high negative offset that is making all of the outputs negative? When you read the voltage with a multimeter at the inputs to the PGA300 what do you see?

What are the jumper settings that you are using for the PGA300EVM? Can you share a picture as well?

Thanks,

I solved that , thank you. My sensor output was negative. Jumper settings in below. Voltage mode:

J6,J7,J8,J14(pins2-3),J16 are  close;

J4,J5,J9,J10 are open;

But now I have got a new problem. The output voltage(between pin TP30 and TP48 or TP39) isn't changing with external piezoresistive presssure sensor but that is changing with DAC Data manually . After every setting I calculate CRC and write EPROM. What can be problem?

Regards,

I solved that , thank you. My sensor output was negative. Jumper settings in below. Voltage mode:

J6,J7,J8,J14(pins2-3),J16 are  close;

J4,J5,J9,J10 are open;

But now I have got a new problem. The output voltage(between pin TP30 and TP48 or TP39) isn't changing with external piezoresistive presssure sensor but that is changing with DAC Data manually . After every setting I calculate CRC and write EPROM. What can be problem?

Regards,

Part Number: PGA300EVM-034

Hi,

I'm trying the same thing.

The DAC test mode does work, but when you try with my resistive bridge sensor the output does not change with the input. I increased the ADC gain but doesn't change. Can you help me?

Hello,

OK, Thanks Scott. But I can't switch to compensation mode. I click "Compensation Mode" in the left corner. The interface waiting for 2 second . Is there a special setting for Compensation Mode? 

Part Number: PGA300EVM-034

Hello,

I'm measuring our piezoresistive pressure sensor with PGA300EVM . But I have got a question. After I turn off energy of PGAEVM, I'm turn on repeat. For measure,  I need to switch to compensation mode again with the program(PGA300EVM-034 GUI).

Can I switch to compensation mode via the PGA EVM module?