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This KWIK (Know-how With Integrated Knowledge) Circuit FAQ is a step by step guide that goes through the design of the input stage to an ADC where it discusses the key functions associated with a ADC driver design. This FAQ goes through how to scale the input signal amplitude, convert from single ended to differential as well as the removal of common mode offsets. This FAQ uses the LTC6228 for the input drive stage and the LTC2387-18 an 18-bit 15MSPS SAR ADC. This document highlights the key information and considerations required to design such an ADC driver circuit while ensuring noise and distortion requirements are met. |
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Download this KWIK Circuit's LTspice simulations by clicking on the .zip file below. Scaling and Shifting the Input Signal for Wide Bandwidth Measurements_LTspice.zip |