Part Number: TPS60402

Dear sir,

We built the circuit as Figure 4: Input-sensor-isolated 2-wire transmitter from following link

But we are facing following issue.

when we check 4 to 20 mA  output, we find 12 mA by default instead of 4 mA.

But when we disconnect input supply of TPS60402, default output is 4 mA. But we need this output by supplying to TPS60402.

How to fix this issue ?

following is the sch. for reference.








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