Data Acquisition Block for ECG Systems, discrete LEAD I ECG implementation Reference Design


Description & Features

Technical Documents

Support & Training

Order Now

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

Key Document


This TI Verified Design is for Electrocardiography (ECG), the measurement of the electrical activity of the heart, a method that requires a precision analog front end instrumentation gain stage, filtering, and high resolution digital conversion. This design features the methodology for achieving a LEAD I ECG measurement system designed from discrete analog components. Ultra low power is optimized by an instrumentation front end using an OPA2333 and is digitized by the 18 bit ADS8881.

See more TI Precision Designs

  • 18 Bit, 10ksps Sampling Rate
  • 200Hz ECG Signals
  • Optimization: ECG
  • Power: 1.5mW @ AVDD = 3.3V
  • Utilizes ADS8881 (18bit, 1Msps SAR ADC), OPA2333 (Input/INA), OPA313 + REF3330 (Reference) 
  • This Verified Design Includes:

  • Theory
  • Component Selection
  • TINA-TI Simulation
  • Schematics and PCB Layout
  • Verification and Measured Performance
  • Modification Options


TI Devices (4)

Order samples, get tools and find more information on the TI products in this reference design.

Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
ADS8881  18-Bit, 1-MSPS, Serial Interface, microPower, True Differential-Input SAR ADC  Analog to Digital Converter  Sample & Buy View Design Kits & Evaluation Modules
OPA2333  1.8V, 17µA, 2 channels, microPower, Precision, Zero Drift CMOS Op Amp  Operational Amplifiers (Op Amps)  Sample & Buy View Design Kits & Evaluation Modules
OPA313  1-MHz, Micropower, Low-Noise, Rail-to-Rail I/O 1.8-V Operational Amplifier  Operational Amplifiers (Op Amps)  Sample & Buy View Design Kits & Evaluation Modules
REF3330  30ppm/C Drift, 3.9uA, SOT23-3, SC70-3 Voltage Reference  Voltage Reference  Sample & Buy View Design Kits & Evaluation Modules

Technical Documents
User guides (1)
Title Abstract Type Size (KB) Date Views TI Recommends
PDF 1222 18 Jun 2013 543
Design files (3)
Title Abstract Type Size (KB) Date Views
ZIP 1295 20 Sep 2013 95
PDF 78 20 Sep 2013 238
PDF 102 20 Sep 2013 653
More literature (1)
Title Abstract Type Size (KB) Date Views
PDF 743 13 Jan 2015 457
Related Tools & Software

Development Tools (1)

Name Part Number Tool Type
SPICE-Based Analog Simulation Program  TINA-TI  Circuit Design & Simulation 

Software (2)

TI E2E™ community

TI E2E Community

As a member ofmy.TI you can join theTI E2E™ Community where you can ask questions, share ideas and collaborate with fellow engineers and TI experts

Contents are provided "AS IS" by the respective TI and Community contributors and do not constitute TI specifications. SeeTerms of use.



Visit the TI Wiki