Interfacing Current Output Hall Sensors and CTs with Pseudo-differential ADC/MCU Reference Design

(ACTIVE) TIDA-00316

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Key Document

Description

The TIDA-00316 reference design provides a reference solution for interfacing current output Hall sensors and current transformers to Pseudo-differential ADC (standalone and integrated into MCU). Two variants of signal conditioning circuits are designed to measure motor current using bipolar and unipolar supply voltages respectively. Both the signal conditioning circuits provide current measurement accuracy within ±0.5% for an operating temperature range from -25°C to +75°C.

Features
  • On board current-output Hall sensor to measure nominal current up to 25A RMS
  • Current measurement accuracy of 0.5%
  • Common reference solution for interfacing both CT and current output Hall sensor with Pseudo-differential ADC/MCU
  • Two different variants to work on unipolar and bipolar supply rails
  • Designed to evaluate with Delfino F2837x Control Card
  • Designed to evaluate with external ADC (ADS7253) for interfacing with Motor Controller

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Bill of Materials (BOM)

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TI Devices (9)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
LP2992  Micropower 250 mA Low-Noise Ultra Low-Dropout Regulator  Power management  Sample & Buy View Design Kits & Evaluation Modules
OPA2192  36-V, Precision, RRIO, Low Offset Voltage, Low Input Bias Current Op Amp With e-trim  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
OPA2322  20MHz, Low Noise, 1.8V RRIO, CMOS Operational Amplifier   Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
REF2025  8ppm/°C Drift, Low-Power, Dual-Output Vref and Vref/2 Voltage Reference  Voltage references  Sample & Buy Not Available
REF2033  Low-Drift, Low-Power, Dual-Output Vref and Vref/2 Voltage Reference  Voltage references  Sample & Buy View Design Kits & Evaluation Modules
TLV1702  Dual, 2.2-V to 36-V, microPower Comparator  Amplifiers  Sample & Buy Not Available
TPS62150  3–17V 1A Step-Down Converter with DCS-Control in 3x3 QFN package  Step-down (buck)  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
TPS7A49  Vin 3V to 36V, 150mA, Ultra-Low-Noise, High-PSRR Low-Dropout (LDO) Linear Regulator  Power management  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
LP2992 Download Download
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OPA2192 Download
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OPA2322 Download Download
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REF2025 Download -
REF2033 Download -
TLV1702 Download Download
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TPS62150 Download Download
TPS7A30 Download Download
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TPS7A49 Download Download
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Technical Documents

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

User guides (1)
Title Abstract Type Size (KB) Date Views TI Recommends
PDF 15424 07 Aug 2015 2
Design files (6)
Title Abstract Type Size (KB) Date Views
ZIP 644 18 Jun 2015 1 1
ZIP 6485 18 Jun 2015 0
PDF 284 18 Jun 2015 0
ZIP 161 18 Jun 2015 0
PDF 65 18 Jun 2015 0
PDF 1324 18 Jun 2015 0

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