Datasheet > AD8232-EVALZ

AD8232-EVALZ

更新时间： 2024-11-18 12:29:07

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
28页	652K
描述
Single-Lead, Heart Rate Monitor Front End

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AD8232-EVALZ 数据手册

Single-Lead, Heart Rate Monitor Front End

Data Sheet

AD8232

FEATURES

FUNCTIONAL BLOCK DIAGRAM

Fully integrated single-lead ECG front end

Low supply current: 170 µA (typical)

Common-mode rejection ratio: 80 dB (dc to 60 Hz)

Two or three electrode configurations

High signal gain (G = 100) with dc blocking capabilities

2-pole adjustable high-pass filter

Accepts up to 300 mV of half cell potential

Fast restore feature improves filter settling

Uncommitted op amp

3-pole adjustable low-pass filter with adjustable gain

Leads off detection: ac or dc options

Integrated right leg drive (RLD) amplifier

Single-supply operation: 2.0 V to 3.5 V

Integrated reference buffer generates virtual ground

Rail-to-rail output

HPSENSE

IAOUT

REFIN

GND

HPDRIVE

+IN

AC/DC

SDN

S1 10kΩ

–IN

150kΩ

AD8232

LOD+

RLDFB

LEADS-OFF

DETECTION

LOD–

RLD

10kΩ

OUT

OPAMP+ REFOUT OPAMP–

Internal RFI filter

8 kV HBM ESD rating

Figure 1.

Shutdown pin

20-lead 4 mm × 4 mm LFCSP package

APPLICATIONS

Fitness and activity heart rate monitors

Portable ECG

Remote health monitors

Gaming peripherals

Biopotential signal acquisition

GENERAL DESCRIPTION

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 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 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 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.

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.

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.

Rev. A

Document Feedback

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rightsof third parties that may result fromits use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks andregisteredtrademarks are the property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Technical Support

www.analog.com

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AD8232-EVALZ 替代型号

型号	品牌	替代类型	描述	数据表
AD8233CB-EBZ	ADI	功能相似	Fitness and activity heart rate monitors

与AD8232-EVALZ相关器件

型号	品牌	获取价格	描述	数据表
AD8233	ADI	获取价格	Fitness and activity heart rate monitors
AD8233ACBZ-R7	ADI	获取价格	50 µA, 2 mm x 1.7 mm WLCSP, Low Noise, Heart Rate Monitor for Wearable Products
AD8233CB-EBZ	ADI	获取价格	Fitness and activity heart rate monitors
AD8235	ADI	获取价格	40 μA Micropower Instrumentation Amplifier in
AD8235ACBZ-P7	ADI	获取价格	40 μA Micropower Instrumentation Amplifier in
AD8236	ADI	获取价格	Wide Supply Range, Rail-to-Rail
AD8236ARMZ	ROCHESTER	获取价格	OP-AMP, 3500 uV OFFSET-MAX, PDSO8, ROHS COMPLIANT, MO-187AA, MSOP-8
AD8236ARMZ1	ADI	获取价格	40 Î¼A Micropower Instrumentation Amplifier w
AD8236ARMZ-R7	ROCHESTER	获取价格	OP-AMP, 3500 uV OFFSET-MAX, PDSO8, ROHS COMPLIANT, MO-187AA, MSOP-8
AD8236ARMZ-R7	ADI	获取价格	40 µA Micropower Instrumentation Amplifier

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