High Accuracy Analog Front End Using 16-Bit SAR ADC with ±10V Measurement Range Reference Design

(ACTIVE) TIDA-00834

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Key Document

Description

The TIDA-00834 reference design accurately measures voltage and current inputs using simultaneously sampled, 16-bit, ±10 V, bipolar input SAR ADC critical to identify power systems malfunction and power quality related failures accurately and quickly. This results in reduced power systems downtime. The AFE includes signal conditioning based on precision instrumentation or precision amplifier for current measurement upto 125A and opamp based signal conditioning circuit for voltage measurement upto 300V. The gain amplifier for voltage and current inputs are used to scale the sensor output to the ADC range. Coherent sampling of the analog input signals is implemented using comparator and FPGA. The power supply for data acquisition front end is generated using a +5V input.

Features
  • Based on bipolar input 16-bit 8-channel simultaneous sampling SAR ADC simplifying system design
  • On-board potential divider with reinforced isolation amplifier and fixed gain precision amplifier for measurement up to 300V
  • On-board DC/DC converter and LDOs to generate ±12V, ±15V, ±5V, +5V, +3.3V and isolated +5V from single +5V input for easy adaptation to current designs
  • Measurement accuracy within ±0.25% for  ≥ 1000:1 dynamic range
  • Option to configure sampling rate and number of cycles for data capture using HMI enhancing system performances

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ADS8588SEVM-PDK:
ADS8588S 16-Bit High-Speed 8-Ch Simultaneous-Sampling ADC EVM Performance Demonstration Kit (PDK)

$149.00(USD)


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TI Devices (15)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
ADS8578S  14-Bit High-Speed 8-Channel Simultaneous-Sampling ADC With Bipolar Inputs on a Single Supply  Analog-to-digital converters (ADCs)  Sample & Buy View Design Kits & Evaluation Modules
ADS8584S  16-Bit High-Speed 4-Channel Simultaneous-Sampling ADC With Bipolar Inputs on a Single Supply  Analog-to-digital converters (ADCs)  Sample & Buy View Design Kits & Evaluation Modules
ADS8586S  16-Bit High-Speed 6-Channel Simultaneous-Sampling ADC With Bipolar Inputs on a Single Supply  Analog-to-digital converters (ADCs)  Sample & Buy View Design Kits & Evaluation Modules
ADS8588S  16-Bit High-Speed 8-Channel Simultaneous-Sampling ADC With Bipolar Inputs on a Single Supply  Analog-to-digital converters (ADCs)  Sample & Buy View Design Kits & Evaluation Modules
AMC1301  Precision Reinforced Isolated Amplifier for Current Sensing  Special function amplifiers  Sample & Buy View Design Kits & Evaluation Modules
INA188  36-V, Zero-Drift, Rail-to-Rail-Out Instrumentation Amplifier  Amplifiers  Sample & Buy View Design Kits & Evaluation Modules
LM27762  Low-Noise Positive- and Negative-Output Charge Pump With Integrated LDO  DC/DC switching regulators  Sample & Buy View Design Kits & Evaluation Modules
OPA2180  0.1 uV/°C DRIFT, Low Noise, Rail-to-Rail Output, 36V Zero-Drift Op Amp  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
OPA2188  0.03µV/°C, 6µV Vos, Low Noise, Rail-to-Rail Output, 36V Zero-Drift Operational Amplifier   Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
REF5025  3 µVpp/V Noise, 3 ppm/°C Drift Precision Series Voltage Reference  Voltage references  Sample & Buy View Design Kits & Evaluation Modules
SN6505B  Low-Noise 1-A , 420kHz Transformer Driver for Isolated Power Supplies  Isolation  Sample & Buy View Design Kits & Evaluation Modules
TLV1117  Single Output LDO, 800mA, Fixed and Adj., Internal Current limit, Thermal Overload Protection  Power management  Sample & Buy View Design Kits & Evaluation Modules
TPS65131  Split-Rail Converter with Dual, Positive and Negative Outputs (750mA typ)  Power management  Sample & Buy View Design Kits & Evaluation Modules
TPS7A30  Vin -3V to -36V, -200mA, Ultra-Low-Noise, High-PSRR, Low-Dropout (LDO) Linear Regulator  Power management  Sample & Buy View Design Kits & Evaluation Modules
TPS7A39  Dual, 150mA, Wide-Vin, Positive and Negative Low-Dropout (LDO) Voltage Regulator  Power management  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
ADS8578S Download
ADS8584S Download
ADS8586S Download Download
ADS8588S Download Download
AMC1301 Download -
INA188 Download Download
LM27762 Download
OPA2180 Download Download
Download Download
OPA2188 Download Download
Download Download
REF5025 Download Download
Download Download
SN6505B Download Download
TLV1117 Download Download
Download
Download -
Download Download
Download Download
Download -
TPS65131 Download Download
TPS7A30 Download Download
Download
TPS7A39 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 2000 24 Apr 2017
User guides (1)
Title Abstract Type Size (KB) Date Views TI Recommends
PDF 800 22 Sep 2017 19
Design files (6)
Title Abstract Type Size (KB) Date Views
ZIP 1530 25 Sep 2017 42
ZIP 295 25 Sep 2017 8
ZIP 9651 25 Sep 2017 9
ZIP 4136 13 Feb 2017 3
ZIP 4773 13 Feb 2017 5
ZIP 766 13 Feb 2017 4

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