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PAH8002EP-2P Product Datasheet

Low Power Optical Heart Rate Detection Chip

PixArt Imaging Inc.

PixArt Imaging Inc. http://www.pixart.com

All rights reserved. Any portion in this paper shall not be reproduced, copied, or transformed to any other forms without permission.

Version 1.3 | 25 Sep 2017 | 31007AEN

PAH8002EP: Low Power Optical Heart Rate Detection Chip

General Description

The PAH8002EP is a low power and high-performance

CMOS-process optical chip with three LEDs: two Green

and one Infrared, and integrated DSP, targeted as a Heart

Rate Detection (HRD) chip. It is based on optical sensing

technology that captures higher resolution image than

the traditional photodiode. The images are then

processed through our integrated DSP to attain

processed PPG (Photoplethysmogram) data for use in

deducing heart rate.

Key Features

 Heart rate detection function (HRD)

 SRAM buffer support

 Integrated ultra-low power mode, while in Sleep mode

 Adjustable sleep rate control

 Communication interface options

 Four-Wire SPI

 SPI interface up to 2 Mbit/s

 Hardware reset support

 Integrated chip-on-board LEDs with wavelength of

525nm and 940nm

Applications

 Heart Rate Monitor Accessories

 Wearables: Smartwatch, Wrist Band

*Disclaimer:

The PAH8002EP-2P is not designed for usage in medical device.

In addition, the data and information of heart rate

measurement provided by this chip may not be completely

accurate and may exceed heart rate tolerance as per the

specification stated in the document due to different factors,

such as interference with signal from external sources,

incorrect wearing position and changes in weather conditions

or user's body condition.

PIXART IMAGING INC. DISCLAIMS ALL LIABILITY ARISING FROM

SUCH INACCURACY AND ASSUMES NO RESPONSIBILITY FOR THE

CONSEQUENCES OF USE OF SUCH DATA AND INFORMATION.

Key Parameters

Parameter

Value

Operating Temperature,

Tj (°C)

-20 to +60

Array Size

1 pixel

Pixel Size (µm)

780 x 780

Max Frame Rate (fps)

50K

Dynamic Range (dB)

70

Supply Voltage (V)

VDDM: 3.3 – 3.6

VDD_LEDx: 3.3 – 3.6

VDDIO: 1.62 – 3.6

Analog: 2.8

Digital: 1.8

Power Consumption

(mW) @3.3V

Note:

Including LED

current, without I/O

toggling, package only

Active:

 Double Injection Type :

4.95 with one LED

8.25 with two LEDs

0.165 with IR Touch

Detection

 Printing Cover Type:

5.94 with two LEDs

0.165 with IR Touch

Detection

Sleep: 0.08

Heart Rate Measurement

Range (bpm)

30 - 240

Package Size (mm)

3.6 x 6.36 x 1.0

Ordering Information

Part Number

Package Type

PAH8002EP-2P

22-Pin LGA

For any additional inquiries, please contact us at

http://www.pixart.com/contact.asp