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

(ACTIVE) TIDA-00834

Description & Features

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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 Evaluation Module Performance Demonstration Kit (PDK)

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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
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  Buck/Boost, Inverting or Split-Rail  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 Reference  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  Linear Regulator (LDO)  Sample & Buy View Design Kits & Evaluation Modules
TPS65131  Split-Rail Converter with Dual Positive and Negative Outputs (300mA typ)  Buck/Boost, Inverting or Split-Rail  Sample & Buy View Design Kits & Evaluation Modules
TPS7A30  Vin -3V to -36V, -200mA, Ultra-Low Noise, High PSRR, Low-Dropout Linear Regulator  Linear Regulator (LDO)  Sample & Buy View Design Kits & Evaluation Modules
TPS7A39  Dual, 150mA, Wide-Vin, Positive and Negative 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 2000 24 Apr 2017
User guides (1)
Title Abstract Type Size (KB) Date Views TI Recommends
PDF 800 22 Sep 2017 885
Design files (6)
Title Abstract Type Size (KB) Date Views
ZIP 1530 25 Sep 2017 928
ZIP 295 25 Sep 2017 194
ZIP 9651 25 Sep 2017 258
ZIP 4136 13 Feb 2017 41
ZIP 4773 13 Feb 2017 168
ZIP 766 13 Feb 2017 118


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