Post Go back to editing

SSM2019 fails with high input current

We are using SSM2019 for balanced MIC pre-amp. It is powered by +/- 15v source.

Occassionaly a device fails in operation with no apparent reason. When testing failed device with multi-meter it looks like the input stage broke but I can't be sure on that.

The design include schottky diodes (BAR43CFILM) for clamping the input signals. In addition the microphone input connector has ESD protection diodes (TPD2E007).

Any ideas?



Parents Reply Children
No Data