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problem with ad7195

Question asked by renato62 on Jul 1, 2014
Latest reply on Jul 14, 2014 by renato62

Hi,

 

I connected one AD7195 as the schematic attached. The AD7195 is programmed in this mode:
NO ACX MODE,
channel selected AIN1(+) AIN1(-),
BIPOLAR SELECTED,
INPUT RANGE +/-39,06 mV,
gain=128,
50Hz,
continuos read.

Configuration Register=0x000107
Mode Register=0x080060


The load cell has a sensibility 2mV/V


The load cell is read continuously only in traction. In this mode the signal DOUT//RDY it goes low every 20ms and it’s possible read the conversion (reading is from about 0x7fffff  to down)
While in compression the signal DOUT//RDY is always at logic level high.

In the circuit the signal REF+ is connect to +5V, while the signal REF- is connect to GND.


Can you help me?

Thanks

Renato

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