Software-Configurable Cardiac Pacemaker Detection Module Reference Design
TIDA-010005
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Key Document

Description

This reference design implements a compact hardware-based circuit to detect the pacemaker pulse during ECG measurement. It provides indication of valid pace signal through a flag and onboard LED. This design enables the user to configure various parameters of the pace signal (amplitude, rise time, pulse duration, polarity) with software using an onboard DAC. The measured values can be read through an onboard ADC. The Pace signal is extracted, amplified, and conditioned from the noisy ECG signal on the board. It adds the Pace detection feature while used in conjunction with TI’s ADS129X series of devices.

Features
  • Programmable thresholds for detecting : rise time (30 μs to 200 μs), amplitude (8 mV to 700 mV), duration (0.1 μs to 2000 μs) and polarity of pace pulse
  • Availability of measured parameters and conditioned pace signal on I2C bus for further analysis and processing conditioned pace signal on I2C bus for further analysis and processing
  • Interface with TI’s ADS129X series of ECG front-end devices
  • Enables identification of various types of pacemaker signals
  • Compact form factor (29 mm × 35 mm)

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TI Devices (10)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
ADS7142  12-bit 140-kSPS 2-ch nanopower SAR ADC with 1.8-V operation in 1.5-mm x 2-mm QFN package  Analog-to-digital converters (ADCs)  Sample & Buy View Design Kits & Evaluation Modules
DAC5578  8-bit, Octal Channel, Ultra-Low Glitch, Voltage Output, 2-Wire Interface DAC  Digital-to-analog converters (DACs)  Sample & Buy View Design Kits & Evaluation Modules
INA317  Micro-power (50µA), zero-drift (75µV offset, 0.3µV/˚C), precision RRO instrumentation amplifier  Amplifiers  Sample & Buy Not Available
REF2930  3.0V 100ppm/Degrees C, 50uA in SOT23-3 Series (Bandgap) Voltage Reference  Voltage references  Sample & Buy Not Available
SN74AUP2G08  Low-Power Dual 2-Input Positive-AND Gate  Gate  Sample & Buy View Design Kits & Evaluation Modules
SN74AUP3G14  Low-Power Triple Schmitt-Trigger Inverter  Buffer/driver  Sample & Buy View Design Kits & Evaluation Modules
SN74LV4040A  12-Bit Asynchronous Binary Counter  Specialty logic  Sample & Buy View Design Kits & Evaluation Modules
SN74LVC1G3157  1-channel, 2:1 analog switch  Switches & multiplexers  Sample & Buy View Design Kits & Evaluation Modules
TLV1702  Dual high voltage, low power comparator  Amplifiers  Sample & Buy Not Available
TLV9062  10-MHz, low-noise, RRIO, CMOS operational amplifier for cost-sensitive systems  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
ADS7142 Download Download
DAC5578 Download Download
Download Download
INA317 Download Download
REF2930 Download Download
SN74AUP2G08 Download
Download Download
Download Download
Download -
Download -
SN74AUP3G14 Download Download
Download Download
Download Download
Download -
SN74LV4040A Download Download
Download Download
Download Download
Download Download
Download Download
Download Download
Download Download
SN74LVC1G3157 Download Download
Download Download
Download Download
Download Download
Download Download
Download Download
Download -
Download -
TLV1702 Download Download
Download Download
TLV9062 Download Download
Download
Download Download
Download Download
Download Download
Download Download
Download

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Technical Documents

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User guides (1)
Title Type Size (KB) Date
PDF 15136 18 Sep 2018
Design files (6)
Title Type Size (KB) Date
ZIP 563 18 Sep 2018
ZIP 1936 18 Sep 2018
PDF 1479 18 Sep 2018
PDF 289 18 Sep 2018
PDF 298 18 Sep 2018
PDF 606 18 Sep 2018
Related Tools & Software

Reference Designs  ( 1 )

Name Part Number Tool Type
Multiparameter front end reference design for vital signs patient monitor  TIDA-01614  TI Designs

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