AFE4405YZR Texas Instruments - Yeehing Electronics

Ultra-small integrated AFE with FIFO for wearable optical heart-rate monitoring and biosensing ACTIVE

Pricing (USD)

Quantity	Unit Price
1 — 99	2.424
100 — 249	2.124
250 — 999	1.489
1,000 +	0.84

The above prices are for reference only.

Specifications

Manufacturer	Texas Instruments
Product Category	Analog Front End - AFE
RoHS	Y
Series	AFE4405
Type	Biosensing
Resolution	8 bit
Number of Channels	1 Channel
Interface Type	Serial, I2C, SPI
Minimum Operating Temperature	- 20 C
Maximum Operating Temperature	+ 70 C
Mounting Style	SMD/SMT
Package / Case	DSBGA-30
Packaging	Reel
Features	Optical biosensing
Brand	Texas Instruments
Analog Supply Voltage	2 V to 3.6 V
Product Type	Analog Front End - AFE
Factory Pack Quantity	3000
Subcategory	Data Converter ICs
Unit Weight	0.000183 oz

For more information, please refer to datasheet

Documents

AFE4405YZR Datasheet

More Information

The AFE4405 is an analog front-end (AFE) for optical bio-sensing applications, such as heart-rate monitoring (HRM) and saturation of peripheral capillary oxygen (SpO2). The device supports three switching light-emitting diodes (LEDs) and up to two photodiodes. The current from the photodiode is converted into voltage by the transimpedance amplifier (TIA) and digitized using an analog-to-digital converter (ADC). The ADC code can be stored in a 240-sample first in, first out (FIFO) block with programmable depth. The FIFO depth can be partitioned to accommodate the phases that must be stored. 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.