AS7030B datasheet(124/129 Pages) AMSCO

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AS7030B

Application Information

Datasheet

• PUBLIC

DS000716

• v1-00 • 2020-Jun-10

128

│ 123

Application Information

8.1

Application Examples

The following figure shows the complete integration of the AS7030B in a mobile optical measurement

system for HRM, GSR (galvanic skin resistivity) and skin temperature using an NTC.

The device can be powered directly by a Li-ion battery as it has its own power management.

Nevertheless the I2C interface can be powered by 1.8 V circuitry.

Information

AS7030B can be used in the same configuration for e.g. a fitness band or a smart watch.

Figure 171:

AS7030B Optical HRM Measurement System for Wrist Based Application

AS7030B

I2C, Optical &

Electrical

Frontend,

ECG Amp.

SCL

SDA

ENABLE

GPIO3

GPIO2

GPIO1

LDO

Ref

Optical barrier

AGND

SIGREF

VDD

V_LDO

GND

VD1

VD2

VD4

VD3

LED

Supply

Host

Processor

ON=0,OFF=1

VDD

PMIC

+Charger

LED Supply

VBAT

NTC

to ENABLE for on/off

Accelerometer

VBAT

GPIO0

VBAT

INT

connect

unused current

sinks to GND

ECG_REF

ECG_INN

ECG_INP

SIGREF_ECG

AS7030B Datasheet(PDF) 124 Page - ams AG

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