Texas Instruments AFE4462YBGR
Manufacturer No:
AFE4462YBGR
Manufacturer:
Texas Instruments
Package:
Description:
Ultra-small, integrated AFE for optical bio-sensing
Quantity:
In Stock :5344
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Shipped from：HK Warehouse
Expected Shipping：Fri, May 29 - Sat, May 30, 2026
Lead Time：Inquire about availability
Date Code：Within 2 Years
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AFE4462YBGR Information
Texas Instruments AFE4462YBGR technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments AFE4462YBGR.
- Type
- Parameter
- Applications
- HRV, Optical spectroscopy, Optical-HRM, SpO2, Vo2 max
- Number of input channels
- 4
- Resolution (Bits)
- 22
- Number of LEDs
- 16
- Interface type
- I2C, SPI
- Operating temperature range (°C)
- -20 to 85
- Rating
- Catalog
- Package
- DSBGA (YBG)
- Pins
- 36
- Size
- 5.76 mm² 2.4 x 2.4
- Type
- Parameter
- REACH Status
- Yes
- RoHS Status
- RoHS Compliant
Download datasheets and manufacturer documentation for Texas Instruments AFE4462YBGR.
Data sheet:
The AFE4462 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 16 switching light-emitting diodes (LEDs) and up to four photodiodes (PDs). The AFE has two LED drivers each with 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. Up to 16 signal phase sets can be defined, each phase set comprising a combination of LED and Ambient phases. Low noise offset DACs at the receiver inputs can be automatically controlled to cancel DC from Ambient and LED light. The current from each of the 4 PDs in each phase is converted into voltage by TIAs, filtered, and then digitized using a common ADC. The ADC code can be stored in a 256-sample FIFO block. The FIFO can be read out using a SPI or I2C interface.
- Supports signal acquisition of up to 16 phase sets
- Supports up to 16 LEDs, 4 PDs
- Flexible allocation of LEDs, PDs in each phase
- Simultaneous signal acquisition from different sensors at different data rates
- Accurate, continuous PPG monitoring:
- Low current for continuous heart-rate monitoring on a wearable device with a typical value: 15 µA for an LED, 15 µA for the receiver
- Peak system SNR of 115 dB
- Transmitter:
- 8-Bit Programmable LED current with range adjustable from 25 mA to 250 mA
- Mode to fire two LEDs in parallel with independent per-phase current control
- Programmable LED on-time per-phase
- Simultaneous support of 16 LEDs for SpO2, Multi-Wavelength HRM, and Spectroscopy
- Receiver:
- Supports 4 Time-Multiplexed PD Inputs
- 2 parallel receivers (4 sets of TIA/filter)
- Individual ambient offset subtraction DAC at each TIA Input with 8-bit per-phase control and range adjustable up to 255-µA
- Individual LED offset subtraction DAC at each TIA input with 9-bit per-phase control and 64-µA range
- Digital ambient subtraction at ADC output
- Noise filtering with programmable bandwidth
- Transimpedance gain: 3.7 kΩ to 1 MΩ
- Supports external clock or internal oscillator
- Option to acquire data synchronized with a system clock
- Automatic cancellation of DC from Ambient, LED
- FIFO with 256-sample depth
- SPI™ interface/ I2C interface
- 2.6-mm × 2.6-mm DSBGA, 0.4-mm Pitch
- Supplies: Rx:1.7 - 1.9 V (LDO Bypass); 1.9 - 3.6 V (LDO Enabled), Tx: 3-5.5 V, IO: 1.7-RX_SUP
AIChipLink – Your Trusted Electronic Components Distributor
12.28 M
Listed Part Number
3,000+
Leading Manufacturers
4.9 M
In-stock SKU
15,000+
Warehouse Area(㎡)
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