AD8232

Single-Lead Heart Rate Monitor Analog Front End
Manufactured by:

AD8232 wins 2012 Hot 100 Award from EDN!

Product Details

The AD8232 is an integrated signal conditioning block for ECG and other biopotential measurement applications. It is designed to extract, amplify, and filter small biopotential signals in the presence of noisy conditions, such as those created by motion or remote electrode placement. This design allows for an ultralow power analog-to-digital converter (ADC) or an embedded microcontroller to acquire the output signal easily.

The AD8232 can implement a two-pole high-pass filter for eliminating motion artifacts and the electrode half-cell potential. This filter is tightly coupled with the instrumentation architec-ture of the amplifier to allow both large gain and high-pass filtering in a single stage, thereby saving space and cost.

An uncommitted operational amplifier enables the AD8232 to create a three-pole low-pass filter to remove additional noise. The user can select the frequency cutoff of all filters to suit different types of applications.

To improve common-mode rejection of the line frequencies in the system and other undesired interferences, the AD8232 includes an amplifier for driven lead applications, such as right leg drive (RLD).

The AD8232 includes a fast restore function that reduces the duration of otherwise long settling tails of the high-pass filters. After an abrupt signal change that rails the amplifier (such as a leads off condition), the AD8232 automatically adjusts to a higher filter cutoff. This feature allows the AD8232 to recover quickly, and therefore, to take valid measurements soon after connecting the electrodes to the subject.

The AD8232 is available in a 4 mm × 4 mm, 20-lead LFCSP package. Performance is specified from 0°C to 70°C and is operational from −40°C to +85°C.

Applications

  • Fitness and Activity Heart Rate Monitoring
  • Portable ECG
  • Remote health monitors
  • Gaming peripherals
  • Biopotential signal acquisition

Product Lifecycle

checked Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

Evaluation Kits

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Product Details

The AD8232-EVALZ evaluation board contains an AD8232 heart rate monitor front end conveniently mounted with the necessary components for initial evaluation in fitness applications. Reference AD8232 data sheet and UG-514 for details. 

Tools & Simulations

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Design Tools

Product Recommendations

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AD8232 Companion Parts

Recommended Accelerometer

Recommended Analog to Digital Converter

  • For a low power, precision, dual sigma-delta converter , we recommend the ADUCM360 or the ADUCM360 .

Recommended Linear Regulator

  • For ultralow noise, low power, low dropout , we recommend the ADP150 .

Design Resources

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ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

AD8232 Material Declaration
PCN-PDN Information Quality And Reliability Symbols and Footprints

Reviews

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Overview

4 Reviews
4 out of 4 (100%) customers recommend this product.
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Most Helpful Review

by Anonymous
The op amp input for high impedance sensors has a number of applications. I'm also looking at it for a doppler pickup demodulator.

Most Recent Review

by Nstn
The product functions very well in the range it is meant for, but the usage is questionable in my opinion. I was hoping to implement it in a watch-like device, which is impossible with this working principle. I'm pretty sure there are other use-cases though, but not in my domain.

All Reviews

by Nstn, 3 Feb 15
Great product, but usage is questionable
The product functions very well in the range it is meant for, but the usage is questionable in my opinion. I was hoping to implement it in a watch-like device, which is impossible with this working principle. I'm pretty sure there are other use-cases though, but not in my domain.
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by Anonymous, 17 Apr 14
AD8232
i think that it's the best product, it's efficent and really useful
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by Shafik, 11 Sep 13
Love rate detector
The AD8232 realised all the features that was promised. Big effort has been spent to have a large CMRR (100 dB). It has all the features required for many ECG applications. 8kV HBM ESD. Shutdown pin. Internal RFI filter. Large electrode signal compensation. However the narrow bandwidth does not permit it to be used in all potable ECG: details are lost by the filter and the amplifier slew rate. It is still an excellent choice.
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by Anonymous, 29 Dec 12
Excellent design features plus performance for a demanding application. Worked on the first setup.
The op amp input for high impedance sensors has a number of applications. I'm also looking at it for a doppler pickup demodulator.
Was this Helpful?Helpful(0)

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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


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Evaluation Boards Pricing displayed is based on 1-piece.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.