AFE4420YZT Texas Instruments - Yeehing Electronics

Ultra-small integrated AFE with FIFO for multisensor wearable optical heart-rate monitoring

Pricing (USD)

Quantity	Unit Price
1 — 99	5.123
100 — 249	4.176
250 — 999	3.282
1,000 +	1.95

The above prices are for reference only.

Specifications

Manufacturer	Texas Instruments
Product Category	Analog Front End - AFE
RoHS	Y
Series	AFE4420
Type	Optical Biosensing
Resolution	24 bit
Number of Channels	4 Channel
Interface Type	I2C
Supply Voltage - Max	5.5 V
Supply Voltage - Min	1.7 V
Minimum Operating Temperature	- 40 C
Maximum Operating Temperature	+ 85 C
Mounting Style	SMD/SMT
Package / Case	DSBGA-30
Packaging	Reel
Features	Optical Biosensing
Number of Converters	1 Converter
Brand	Texas Instruments
Development Kit	AFE4420EVM
Product Type	Analog Front End - AFE
Factory Pack Quantity	250
Subcategory	Data Converter ICs

For more information, please refer to datasheet

Documents

AFE4420YZT Datasheet

More Information

The AFE4420 is an analog front-end for optical bio-sensing applications, such as heart-rate monitoring (HRM) and saturation of peripheral capillary oxygen (SpO2). The device supports up to four switching light-emitting diodes (LEDs) and up to four photodiodes. Up to 16 signal phases can be defined and the signal can be acquired from each phase in a synchronized manner and stored in a 128-sample First in, First out (FIFO) block. The FIFO can be read out using either an I2C or a SPI interface. The AFE also has a fully integrated LED driver with an 8-bit current control. The device has a high dynamic range transmit-and-receive circuitry that helps with the sensing of very small signal levels.