High-Precision Reference Design for Buffering a DAC Signal

(ACTIVE) TIDA-01402

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Key Document

Description

This reference design features the industry's first zero-crossover and zero-drift amplifier (OPA388) to buffer the analog output of a digital-to-analog converter (DAC). It demonstrates the importance of the zero-crossover and zero-drift feature and how they can minimize the integral non-linearity (INL) of the system as well as make use of the full-scale range of the DAC (DAC8830).

Features
  • Precision DAC (DAC8830) provides excellent linearity, low glitch, low noise and fast setting
  • Operates at 2.7-5.5 V single-supply, which is compatible with most DSP/MCU power requirements
  • Zero-crossover, zero-drift op amp (OPA388) provides true precision to minimize contributions to DAC INL (<0.5 LSB)

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.


  



Schematic/Block Diagram

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Test Data

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Design Files

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Bill of Materials (BOM)

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TI Devices (4)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
DAC8830  16-bit, single-channel, ultra-low power, voltage output DAC  Digital-to-analog converters (DACs)  Sample & Buy Not Available
OPA340  Single-Supply, Rail-to-Rail Operational Amplifiers MicroAmplifier™ Series  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
OPA388  10MHz, CMOS, Zero-Drift, Zero-Crossover, True RRIO Precision Operational Amplifier  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
REF5040  Low Noise, Very Low Drift, Precision Series Voltage Reference  Voltage references  Sample & Buy Not Available

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
DAC8830 Download Download
OPA340 Download Download
Download Download
Download Download
OPA388 Download
Download
REF5040 Download Download
Download Download

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Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

Datasheet (1)
Title Abstract Type Size (KB) Date Views
PDF 2657 18 Jul 2018
User guides (1)
Title Abstract Type Size (KB) Date Views TI Recommends
PDF 5124 03 Feb 2017 4
Design files (6)
Title Abstract Type Size (KB) Date Views
ZIP 493 03 Feb 2017 0
ZIP 985 03 Feb 2017 2
PDF 168 03 Feb 2017 0
PDF 94 03 Feb 2017 0
PDF 43 03 Feb 2017 0
PDF 241 03 Feb 2017 9

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