20-bit Isolated Data Acquisition Reference Design Optimizing Jitter for Max SNR and Sample Rate

(ACTIVE) TIDA-01035

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Technical Documents

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Key Document

Description

The TIDA-01035 is a 20-bit, 1 MSPS isolated analog input data acquisition reference design demonstrating how to resolve and optimize performance challenges typical of digitally isolated data acquisition systems.

  • Significantly improves high frequency AC signal chain performance (SNR  and THD) by effectively mitigating ADC  sample clock jitter across isolation boundary
  • Maximizes sample rate by eliminating/minimizing  propagation delay introduced by a digital isolator
  • Provides option to evaluate performance with and without jitter mitigation technique with jumper
  • Includes detailed timing analysis detailing the isolator’s additive jitter impact on data throughput

Features
  • Isolated 20-bit, 1-MSPS, single channel  differential Input Data Acquisition (DAQ) system
  • Jitter mitigation technique realizes more than 18-dB  system-level SNR improvement for high frequency input signals (100 kHz Fin, 1 MSPS)
  • Reduced logic (on isolated ADC side) eliminates need for higher power and complex PLL solutions
  • Achieves 1-MSPS sampling rate while preserving low SPI CLK rates with the ADS8900B ADC’s innovative multiSPI™ and ADC-master or Source-Synchronous mode digital interfaces
  • Includes theory, calculations, component selection, PCB design and measurement results

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


  




TI Devices (13)

Order samples, get tools and find more information on the TI products in this reference design.

Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
ADS8900B  20-Bit, 1-MSPS, SAR ADC with Internal Reference Buffer, LDO & multiSPI™ Digital Interface  Analog-to-Digital Converters (ADCs)  Sample & Buy View Design Kits & Evaluation Modules
ISO1541  2.5 kVrms Isolated Unidirectional Clock, Bidirectional I2C Isolators  Isolation  Sample & Buy View Design Kits & Evaluation Modules
ISO7840  High-Immunity, 5.7kVRMS Reinforced Quad-Channel 4/0 Digital Isolator, 100Mbps  Isolation  Sample & Buy View Design Kits & Evaluation Modules
ISO7842  5.7 kVrms, 100 Mbps, Reinforced 4-Channel 2/2 Digital Isolator  Isolation  Sample & Buy View Design Kits & Evaluation Modules
LMZ14203  SIMPLE SWITCHER® 6V to 42V, 3A Power Module in Leaded Surface Mount TO Package  Non-Isolated Module  Sample & Buy View Design Kits & Evaluation Modules
OPA376  Precision, Low Noise, Low Iq Operational Amplifier  Operational Amplifiers (Op Amps)  Sample & Buy View Design Kits & Evaluation Modules
REF5050  3 µVpp/V Noise, 3 ppm/°C Drift Precision Series Voltage Reference  Voltage Reference  Sample & Buy View Design Kits & Evaluation Modules
SN6501  Low-Noise 350 mA, 410 kHz Transformer Driver for Isolated Power Supplies  Isolation  Sample & Buy View Design Kits & Evaluation Modules
SN74LVC1G04  Single Inverter  Logic  Sample & Buy View Design Kits & Evaluation Modules
SN74LVC1G08  Single 2-Input Positive-AND Gate  Logic  Sample & Buy View Design Kits & Evaluation Modules
THS4551  Low Noise, Precision, 150MHz, Fully Differential Amplifier  Operational Amplifiers (Op Amps)  Sample & Buy View Design Kits & Evaluation Modules
TPS709  150-mA, 30-V, Ultra-Low IQ, Wide Input Low-Dropout Regulator with Reverse Current Protection  Linear Regulator (LDO)  Sample & Buy View Design Kits & Evaluation Modules
TPS7A47  36V, 1A, 4.17μVRMS, RF Low-Dropout (LDO) Voltage Regulator  Linear Regulator (LDO)  Sample & Buy View Design Kits & Evaluation Modules

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 2020 29 Jun 2017
Application notes (2)
Title Abstract Type Size (KB) Date Views
PDF 867 19 Sep 2016 3,977
PDF 199 23 May 2007 183
User guides (1)
Title Abstract Type Size (KB) Date Views TI Recommends
PDF 2414 17 Jan 2017 451
Design files (6)
Title Abstract Type Size (KB) Date Views
ZIP 458 16 Dec 2016 17
ZIP 5420 16 Dec 2016 124
PDF 4897 16 Dec 2016 88
PDF 848 16 Dec 2016 75
PDF 238 16 Dec 2016 99
PDF 1275 16 Dec 2016 400
Related Tools & Software

Reference Designs (3)

Design Kits & Evaluation Modules (1)

Name Part Number Tool Type
ADS8900B Fully-Differential Input, 20-Bit SAR ADC EVM Performance Demonstration Kit (PDK)  ADS8900BEVM-PDK  Evaluation Modules & Boards 


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