AS7024-WRISTBAND ams

AS7024 Biosensors The AS7024 device provides a flexible analog front end for light General Description sensing applications. The photodiode input circuit can be configured in different ways to guarantee best tradeoff between speed and sensitivity for a large number of different sensing applications. AS7024 is targeted for wearables (fitness band, smart watch). Ordering Information and Content Guide appear at end of datasheet. Key Benefits and Features The benefits and features of AS7024, Biosensors are listed below: Figure 1: Added Value of Using AS7024 Benefits Features Allows smallest application size e.g. narrow HRM Single device integrated optical solution measurement band Good HRM measurement quality Low noise analog optical front end Analog electrical front end (e.g. for temperature Additional information for end user sensing using a NTC or galvanic skin resistivity (GSR)) Hardware sequencer to offload processor Long operating time Adjustable LED driver with current control Works reliably with ambient light Synchronous demodulator ams Datasheet Page 1 v1-04 2018-Sep-11 Document FeedbackAS70 24 Gene ral Des c rip t ion Applications The device is suitable for optical sensor platform. Figure 2: Application Schematic AS7024 LED1 LED4 VD1 VD4 IR Optical barrier ECG INP ENABLE I2C, Optical & ECG INN GPIO3 ECG REF Electrical GPIO2 SDA Frontend, GPIO1 SCL GPIO0 ECG Amp. INT VBAT 2.7V-5.5V VDD SIGREF V LDO LDO Ref AGND GND Optical barrier LED2 VD3 VD2 AS7024 Page 2 ams Datasheet Document Feedback v1-04 2018-Sep-11