20-bit, 1-MSPS Isolator Optimized Data Acquisition Reference Design Maximizing SNR and Sample Rate

(ACTIVE) TIDA-01037

Description & Features

Technical Documents

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

Key Document

Description

TIDA-01037 is a 20-bit, 1 MSPS isolated analog input data acquisition reference design that utilizes two different isolator devices to maximize signal chain SNR and sample rate performance. For signals requiring low jitter, such as ADC sampling clocks, TI’s ISO73xx family of low jitter devices are used whereas TI’s high speed ISO78xx family of devices are used to maximize data sample rate. By combing these two isolator solutions, high frequency performance is significantly improved by minimizing sample clock jitter across the isolation boundary, and data throughput is improved by maximizing isolator signaling rate. Additional improvements are realized by utilizing TI’s advanced ADC multiSPITM and source-synchronous features. Finally, all key design theories are described and measured results presented.

Features
  • Differential input, isolated, 20-bit, 1-MSPS, Data Acquisition (DAQ) reference design
  • Optimized isolator solution for input signals up to 100 kHz
  • Additional jitter mitigation circuitry not required
  • Demonstrates low SPI clock rates with the TI’s innovative multiSPI™ and source-synchronous  mode ADC digital interfaces
  • Provides capaility to evaluate system SNR performance due to sample clock jitter
  • Includes theory, calculation, component selection, PCB design and measurement results

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


  




TI Devices (15)

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
LMK61E2  Ultra-Low Jitter Fully Programmable Oscillator, Integrated EEPROM, +/-50ppm  Clock and Timing  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
SN65LVDS4  500 Mbps LVDS Single High Speed Transceiver  LVDS/M-LVDS/PECL  Sample & Buy View Design Kits & Evaluation Modules
SN74AHC1G04  Single Inverter Gate  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 4,885
PDF 199 23 May 2007 179
User guides (1)
Title Abstract Type Size (KB) Date Views TI Recommends
PDF 2173 27 Jan 2016 431
Design files (6)
Title Abstract Type Size (KB) Date Views
ZIP 496 16 Dec 2016 17
ZIP 4863 16 Dec 2016 92
PDF 5793 16 Dec 2016 88
PDF 973 16 Dec 2016 67
PDF 235 16 Dec 2016 90
PDF 2218 16 Dec 2016 227
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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