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EM7028
时间:2017-03-22 01:26 来源:未知 作者:总编辑 点击:

Description

EM7028 is a low-power I2C interface module includes Heart Rate Sensor(HRS) and internal LED Current Drivers with 2 Green LED. It can work in both in both continuous mode and pulse mode. It is designed for applications of Heart Beat Rate detection esp. such as smart watch etc.

Heart Rate Sensor in continuous mode is designed to monitor heart rate by optical detection. A 16-bit ADC detects the result constantly with adjustable gain and resolution.

Heart Rate Sensor in pulse mode is designed to monitor heart rate by optical detection in low-power. It also acts as a proximity sensor with rejection of ambient light noise. In order to removing component variations and eliminate offset caused by IR reflection, EM7028 set 2 registers for compensation and high dynamic range of detection.

HRS in continuous mode and pulse mode can work simultaneously. All pixels are controlled by analog-MUX in different modes.

Features

Heart-Rate Sensors(HRS) with built-in 2 LED of 525nm wavelength integrated in a single Optical Module

50Hz/60Hz Flicker Noise Rejection

Temperature Compensation

Higher Sensitivity of Proximity Sensing

HRS in continuous mode with higher detection rate

HRS in pulse mode with Ambient Light Rejection

HRS detect rates is up to 1000/s

1024 Steps Programmable LED current driver for flexibility and part-to-part calibration

16bits ADC of Heart Rate Sensor

Offset register adjustment for compensation of DC noise

Programmable Interrupt modes

Low Average Operation Power consumption

Output Type: I2C Bus (HRS2) up to 400K Hz

Operation Voltage 2.5V ~ 3.6V

Logic Interface Voltage VBUS=1.8V or VBUS=VDD

Minimum External Components

Package: (4.0mmX2.4mmX1.35mm)

RoHS package

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