Quad-Channel, 12-Bit, 50-MSPS ADC Reference Design With Low Noise, Low Distortion, DC and AC Inputs


Design files


This reference design demonstrates how to implement a single-ended-to-differential input path, which can be AC-coupled or DC-coupled for an ADC3422. It also explains how to design a high-input impedance, DC-coupled input path. The reference design can be used for applications such as low-power data acquisition, portable instrumentation and IGBT diagnositics.

  • Single-ended-to-differential reference design using the OPA656 and THS4541
  • Channel A and channel B are AC / DC coupled using the THS4541
  • THS4541 and ADC3422 achieve 70-dB SNR 
  • Low-power (57mW/channel) operation suitable for battery-powered devices
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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.


Reference design overview and verified performance test data

TIDRO26.PDF (108 K)

Detailed schematic diagram for design layout and components

TIDRO27.PDF (262 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

TIDRO28.PDF (60 K)

Detailed overview of design layout for component placement

TIDRO30.ZIP (1223 K)

Files used for 3D models or 2D drawings of IC components


Design file that contains information on physical board layer of design PCB

TIDRO29.PDF (877 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

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Technical documentation

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Type Title Date
* Design guide Low-Power, Quad 12-Bit 50-MSPS ADC Reference Design With Low-Noise (Rev. A) Sep. 27, 2016

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