High Performance Capacitive Sensor Front-End Reference Design

(ACTIVE) TIDA-00662

Description & Features

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Key Document

Description

The TIDA-00662 is a high performance capacitive sensor front-end reference design. With the usage of an audio codec including a programmable miniDSP functionality impedance measurement and change in phase detection is realized. The frequency-domain sensing front-end is for pressure and flow transmitters applications, as well as any other application with capacitive sensor elements.

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Features
  • Frequency-domain sensing extracts exact phase differences to measure impedance- and phase-changes
  • Suitable for pressure & flow transmitters where capacitive sensors are used
  • Use of audio codec miniDSP functions measure impedance/phase change
  • Physical form factor in BoosterPack for compatibility with all TI LaunchPads

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Schematic/Block Diagram

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Design Guide

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Design Files

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Bill of Materials (BOM)

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TI Devices (7)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
MSP430F5529  25 MHz MCU with Integrated USB Phy, 128KB Flash, 8KB RAM, 12Bit/14 Channel ADC, 32BIT HW Multiplier  MSP430 ultra-low-power MCUs  Sample & Buy View Design Kits & Evaluation Modules
OPA2376  Precision, Low Noise, Low Quiescent Current Operational Amplifier  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
OPA317  Low Offset, Rail-to-Rail I/O Operational Amplifier  Operational amplifiers (op amps)  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
TLV320AIC3254  Very Low-Power Stereo Audio CODEC with programmable miniDSP  Audio converters  Sample & Buy View Design Kits & Evaluation Modules
TPD2E001  Low-Capacitance 2-Channel +/-15kV ESD Protection Array for High-Speed Data Interfaces  Circuit protection  Sample & Buy View Design Kits & Evaluation Modules
TPS736  Single Output LDO, 400mA, Adj.(1.2 to 5.5V), Cap free, Low Noise, Reverse Current Protection  Power management  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
MSP430F5529 Download Download
OPA2376 Download Download
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OPA317 Download
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OPA376 Download Download
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TLV320AIC3254 Download Download
TPD2E001 Download -
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TPS736 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 4709 01 Aug 2017 20
Design files (8)
Title Abstract Type Size (KB) Date Views
ZIP 343 17 Jun 2016 13
ZIP 3785 17 Jun 2016 6
PDF 3951 17 Jun 2016 4
PDF 658 17 Jun 2016 3
PDF 2176 17 Jun 2016 7
PDF 454 17 Jun 2016 3
PDF 75 17 Jun 2016 5
PDF 1780 17 Jun 2016 28

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