Power-optimized 16-bit 1MSPS Data Acquisition Block for Lowest Distortion and Noise Reference Design
TIPD149
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Key Document

Description

This TI Verified Design is the realization of a high precision, 16-bit 1MSPS data acquisition system suitable for applications such as digital audio that require front-ends with very low distortion and noise. The circuit uses a high performance Successive Approximation Register Analog to Digital Converter (SAR ADC) and has been optimized to provide superior dynamic performance, without excessive power consumption.

Features
  • Verified Design Contains Theory, Component Selection, TINA-TI Simulation, Altium Schematics and PCB Layout, Measurement Results
  • 16 bit SAR ADC with 1MSPS sampling rate and full-scale input range (FSR) of 4.096V
  • Optmized for AC performance:
    • -110dB measured THD
    •  91.6dB measured SNR
    •  Less than ±0.5LSB INL

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Schematic/Block Diagram

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Test Data

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Design Files

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TI Devices (5)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
ADS8860  16-Bit, 1-MSPS, 1-ch SAR ADC with single-ended input, SPI interface and daisy-chain  Analog-to-digital converters (ADCs)  Sample & Buy View Design Kits & Evaluation Modules
OPA333  1.8-V, 17-µA, microPower, precision, zero-drift CMOS op amp  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
OPA836  Very Low Power, Rail to Rail out, Negative Rail in, VFB Op Amp  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
REF3240  4.096-V 4-ppm/°C, 100-µA 6-pin SOT-23 series (bandgap) voltage reference  Voltage references  Not Available Not Available
THS4281  Very Low-Power High Speed Rail-To-Rail Input/Output Voltage Feedback Operational Amplifier  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
ADS8860 Download
OPA333 Download Download
Download Download
Download Download
OPA836 Download Download
Download -
REF3240 Download Download
THS4281 Download Download
Download Download
Download Download

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Step 2: Download the Symbol and Footprint from the CAD.bxl file table.


Technical Documents

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User guides (1)
Title Type Size (KB) Date
PDF 1771 10 Dec 2013
Design files (3)
Title Type Size (KB) Date
ZIP 527 23 Jul 2014
PDF 71 23 Jul 2014
PDF 32 23 Jul 2014
Related Tools & Software

Software (2)



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