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power amplifier

Question asked by KurtBecker on Dec 20, 2013

I am looking for a power amplifier which can drive from 100mA up to 500mA (differential output) into an inductive load (it is just 100uH I guess).

The design is a servo loop. The loop bandwidth is DC to 100Hz only, but I need all the low noise I can get,especially at very low frequencies.

Power is +/-5V. In the moment I am using a AD815.

I was thinking about the AD8398A which does 450mA and has 4.8nV/rtHz but I am not certain how it behaves at e.g. 1Hz.

I rather ask than make a PCB, waste a week and $1K.

Any idea?

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