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AS7038RB Fiches technique(PDF) 122 Page - ams-OSRAM AG

No de pièce AS7038RB
Description  Biosensor Solution with Embedded ECG Channel
PDF  127 Pages
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Fabricant  AMSOSRAM [ams-OSRAM AG]
Site Internet  https://ams-osram.com/
Logo AMSOSRAM - ams-OSRAM AG

AS7038RB Fiches technique(HTML) 122 Page - ams-OSRAM AG

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AS7038RB
Application Information
Datasheet
• PUBLIC
DS000726
• v2-00 • 2021-Jun-02
126
│ 121
8
Application Information
8.1
Application Examples
The following figure shows the complete integration of the AS7038RB in a mobile optical
measurement system for HRM, SpO2, 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
AS7038RB can be used in the same configuration for e.g. a fitness band or a smart watch.
Figure 170:
AS7038RB Optical SpO2 and HRM Measurement System for Wrist Based Application
AS7038RB
I2C, Optical &
Electrical
Frontend,
ECG Amp.
SCL
SDA
ENABLE
GPIO3
GPIO2
GPIO1
LDO
Ref
AGND
SIGREF
VDD
V_LDO
GND
VD1
VD2
VD4
VD3
LED
Supply
Host
Processor
ON=0,OFF=1
VDD
PMIC
+Charger
LED Supply
VBAT
VBAT
NTC
to ENABLE for on/off
Accelerometer
GPIO0
VBAT
INT
connect
unused current
sinks to GND
ECG_REF
ECG_INN
ECG_INP
SIGREF_ECG
LED Supply
LED
Supply



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