Datasheet > ADPD103

ADPD103

更新时间： 2024-09-22 01:08:23

品牌	Logo	应用领域
亚德诺 - ADI		/
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描述
TEMPERATURE AND POWER SPECIFICATIONS

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ADPD103 数据手册

Photometric Front End

ADPD103

Data Sheet

FEATURES

GENERAL DESCRIPTION

Multifunction photometric front end

Fully integrated AFE, ADC, LED drivers, and timing core

Usable in a broad range of optical measurement

applications, including photoplethysmography

Enables best-in-class ambient light rejection capability

without the need for photodiode optical filters

Three 8 mA to 250 mA LED drivers

The ADPD103 is a highly efficient photometric front end with

an integrated 14-bit analog-to-digital converter (ADC) and a

20-bit burst accumulator that works in concert with flexible

light emitting diode (LED) drivers. It is designed to stimulate an

LED and measure the corresponding optical return signal. The

data output and functional configuration occur over a 1.8 V I²C

interface. The control circuitry includes flexible LED signaling and

synchronous detection.

Separate data registers for each LED/photodiode

combination

The analog front end (AFE) features best-in-class rejection of signal

offset and corruption due to modulated interference commonly

caused by ambient light.

1 to 8 optical inputs

Flexible, multiple, short LED pulses per optical sample

20-bit burst accumulator enabling 20 bits per sample period

On-board sample to sample accumulator, enabling up to

27 bits per data read

Couple the ADPD103 with a low capacitance photodiode of

<100 pF for optimal performance. The ADPD103 can be used with

any LED.

Low power operation

I²C interface and 1.8 V analog/digital core

Flexible sampling frequency ranging from 0.122 Hz to

3.820 kHz

FIFO data operation

APPLICATIONS

Body worn health and fitness monitors, for example, heart

rate monitoring

Clinical measurements, for example, SpO₂

Industrial monitoring

Background light measurements

Rev. B

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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. Specificationssubject to change without notice. No

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

Trademarksandregisteredtrademarksare the property oftheir respective owners.

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

Technical Support

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