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This KWIK (Know-how With Integrated Knowledge) Circuit FAQ is a step-by-step guide that goes through the key considerations when designing the amplification of AC signals in the presence of large DC offsets, using an Indirect Current-Mode Instrumentation Amplifier. The circuit highlighted in the FAQ consists of an AC coupled signal conditioning circuit with indirect current-mode architecture, optimized for high gain and AC coupling in one stage. The note goes through how to achieve this while blocking any DC offsets prior to gain, allowing the gain to increase further than other solutions. |
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Download this KWIK Circuit's LTspice simulations by clicking on the .zip file below. |