ADC Voltage Reference Buffer Optimization Reference Design for High Performance DAQ Systems
TIDA-01055
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Key Document
- TIDA-01055 Schematic and Block Diagram
(PDF 914 KB)
15 Sep 2017
- ADC Voltage Reference Buffer Optimization Ref Design for High-Performance DAQs (Rev. A)
(PDF 3126 KB)
29 Jan 2018
Description
The TIDA-01055 reference design for high performance DAQ Systems optimizes the ADC reference buffer to improve SNR performance and reduce power consumption with the TI OPA837 high-speed op amp. This device is used in a composite buffer configuration and provides a 22% power improvement over traditional op amps. Voltage reference sources with an integrated buffer often lack the drive strength required to achieve optimal performance in a high-channel count systems. This reference design is capable of driving several ADCs, and achieves a system ENOB of 15.77 bits using an 18-bit, 2-MSPS SAR ADC.
Features
- Two stage buffer design for reducing noise generated from voltage reference
- Implements new low power reference driver with the slew rate capability to drive a 2MSPS SAR ADC
See the Important Notice and Disclaimer covering reference designs and other TI resources.