Four-channel synchronous vibration sensor interface reference design


Design files


This reference design explains the theory, design and testing of a synchronous, four-channel wideband high-resolution interface. The main targets are the vibration sensing applications, but the design can also be applied to any application that requires wideband, such as three-phase voltage and current monitoring in power factor measurement.

  • Synchronous four-channel wideband integrated electronic piezoelectric (IEPE) sensor interface
  • 24-bit 20-kHz bandwidth conversion
  • Data rate of 124 kSPS (daisy chain), 1 MSPS (parallel SPI)
  • ±10-V AC input and 320-kΩ input impedance
  • Onboard four excitation current (about 3.5 mA)
  • Onboard non-isolated 5-V to 24-V boost
??image.gallery.download_en_US?? View video with transcript Video

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

Important note
GUI for reference design available: download TIDA-010249-GUI

Design files & products

Design files

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

TIDUF13.PDF (2827 K)

Reference design overview and verified performance test data

TIDMB43.PDF (1220 K)

Detailed schematic diagram for design layout and components

TIDMB44.PDF (167 K)

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

TIDMB45.PDF (723 K)

Detailed overview of design layout for component placement

TIDMB47.ZIP (4094 K)

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


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

TIDMB46.PDF (2581 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

AC/DC & DC/DC converters (integrated FET)

TLV61046A28-V Output Voltage Boost Converter with Power Diode and Isolation Switch

Data sheet: PDF | HTML
Clock buffers

LMK1C11066-channel output LVCMOS 1.8-V buffer

Data sheet: PDF | HTML

LM2903B-Q1Automotive, dual differential commodity comparator

Data sheet: PDF | HTML
Fully differential amplifiers

THS4551Low Noise, Precision, 150MHz, Fully Differential Amplifier

Data sheet: PDF | HTML
Linear & low-dropout (LDO) regulators

TPS7A20300mA ultra-low-noise low-IQ low-dropout (LDO) linear regulator with high PSRR

Data sheet: PDF | HTML
Linear & low-dropout (LDO) regulators

TPS7A49150-mA, 36-V, low-noise, high-PSRR, adjustable low-dropout voltage regulator with enable

Data sheet: PDF | HTML
Precision ADCs

ADS127L1124-bit, 400-kSPS, delta-sigma ADC with easy-to-drive inputs and wideband or low-latency filters

Data sheet: PDF | HTML
Precision DACs (≤10 MSPS)

DAC80501True 16-bit, 1-ch, SPI/I2C, voltage-output DAC in WSON package with precision internal reference

Data sheet: PDF | HTML
Precision op amps (Vos<1mV)

OPA2320Dual, precision, zero-crossover, 20-MHz, 0.9-pA Ib, RRIO, CMOS operational amplifier

Data sheet: PDF | HTML
Precision op amps (Vos<1mV)

OPA4187Zero-drift (10µV, 0.001µV/C˚), MUX-friendly, low power, RRO, CMOS quad precision op amp (quad)

Data sheet: PDF | HTML
Series voltage references

REF62414.096-V, 3-ppm/°C high-precision voltage reference with integrated buffer & enable pin

Data sheet: PDF | HTML
Shunt voltage references

TLV431B0.5% accuracy, low-voltage, adjustable precision shunt regulator

Data sheet: PDF | HTML

Start development


GUI for evaluation module (EVM)

TIDA-010249-GUI TIDA-010249 reference design GUI

Optional GUI to interface to PHI + TIDA-010249 reference design hardware
lock = Requires export approval (1 minute)

TIDA-010249-GUI TIDA-010249 reference design GUI

Latest version
Version: 1.1.0
Release date: 26 Apr 2023
lock = Requires export approval (1 minute)

Technical documentation

No results found. Please clear your search and try again.
View all 1
Type Title Date
Design guide Four-Channel Synchronous IEPE Vibration Sensor Interface Reference Design PDF | HTML Nov. 28, 2022

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​