The need for conditioning low-level ac signals in the presence of both common-mode noise and differential dc voltage prevails in many applications. In such situations, ac-coupling to instrumentation ...

Designs for audio amplifiers with DC coupling to the load are not often encountered these days, even though they offer definite advantages. One advantage is that there is no need for the complication ...

Analog Devices Rob Reeder analyzes what can go wrong if designers don't under common-mode voltage specs when dc-coupling amplifiers and data converters. The common ground between two devices can be ...

You know the routine. You have rigged up a prototype for your application. Your detector is doing what it does. Now all you need is a current amplifier so you can see (and measure) what is happening.