TIDA-00929

Spectrum Analyzer Signal Conditioning and Processing for Capturing Arc Signatures Reference Design

TIDA-00929

Design files

Overview

This reference design demonstrates bandwidth-optimized analog front end (AFE) and real-time FIR implementation using low power to capture broadband frequency spectrum in any waveform. An operational amplifier in each signal path is chosen based on the gain, signal bandwidth, low noise and close to the rail swing requirements while consuming low power. The waveform is processed in real-time both in frequency and time domain using a mixed signal ultra-low power microprocessor with a built-in vector math engine.

Features
  • AFE for effective passing both low frequency and high frequency while suppressing signal noise
  • Capturing frequency content up to 100 kHz in frequency domain by sampling the signal using 12-bit SAR ADC at 200 ksps and performing real-time FIR filter in MSP430 using low energy accelerator (LEA) frequency domain by sampling the signal using 12-bit SAR ADC at 200 ksps and performing real-time FIR filter in MSP430 using low energy accelerator
  • High frequency time domain analysis:
    1. Capturing arc signatures up to 3MHz using internal comparator of MSP430
    2. Noise capture up to 10MHz using external comparator
  • IQ requirement of 10 mA is derived from single-phase AC supply of 85 Vrms to 270 Vrms with capability of powering up to 100 mA
  • Compatible with various sensors like shunt, CT or Rogowski coil

A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDUCG7E.PDF (5677 K)

Reference design overview and verified performance test data

TIDRPF5A.PDF (1532 K)

Detailed schematic diagram for design layout and components

TIDRPF6A.PDF (71 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

TIDRPF7A.PDF (275 K)

Detailed overview of design layout for component placement

TIDRPF9A.ZIP (1495 K)

Files used for 3D models or 2D drawings of IC components

TIDCD27A.ZIP (1302 K)

Design file that contains information on physical board layer of design PCB

TIDRPF8A.PDF (1207 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Comparators

TLV32015.5-V, high-speed, single push-pull comparator

Data sheet document-pdfAcrobat PDF open-in-new HTML
Flyback controllers

UCC28880High voltage switcher for Non-isolated AC/DC Conversion

Data sheet document-pdfAcrobat PDF open-in-new HTML
General-purpose op amps

TLV316Single, 5.5-V, 10-MHz, RRIO operational amplifier

Data sheet document-pdfAcrobat PDF open-in-new HTML
High-speed op amps (GBW>=50MHz)

OPA835Ultra Low Power, Rail to Rail Out, Negative Rail In, VFB Amplifier

Data sheet document-pdfAcrobat PDF
High-speed op amps (GBW>=50MHz)

OPA836Very Low Power, Rail to Rail out, Negative Rail in, VFB Op Amp

Data sheet document-pdfAcrobat PDF
Linear & low-dropout (LDO) regulators

LP5907250-mA, low-noise, high-PSRR, ultra-low-dropout voltage regulator with low IQ and enable

Data sheet document-pdfAcrobat PDF open-in-new HTML
MSP430 microcontrollers

MSP430FR599416 MHz MCU with 256KB FRAM, 8KB SRAM, LEA, AES, 12-bit ADC , comparator, DMA, UART/SPI/I2C, timer

Data sheet document-pdfAcrobat PDF open-in-new HTML
Supervisor & reset ICs

TPS3820Active-low, push-pull, voltage supervisor (reset IC) with 0.2-s watchdog & manual reset

Data sheet document-pdfAcrobat PDF open-in-new HTML
Supervisor & reset ICs

TPS3828-Q1Automotive voltage monitor with watchdog timer

Data sheet document-pdfAcrobat PDF open-in-new HTML

Technical documentation

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Type Title Date
* Design guide Spectrum Analyzer: Signal Conditioning/Processing for Capturing Arc Ref Design (Rev. E) Apr. 22, 2019

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