See datasheet for actual packaging/pinout drawings

Packaging

Package | PIN:

YZ | 30

Temp:

S (-20 to 70)

ECO Plan:

Green (RoHS & no Sb/Br)

AFE4900YZT


Ultra-Low-Power Integrated AFE for Wearable Optical, Electrical Biosensing

TI Store Price:

 
 
Qty.Price
1 - 9 $ 6.96
10 - 24 $ 6.26
25 - 99 $ 5.71
100 - 249 $ 5.15
250 - 499 $ 4.68
500 - 749 $ 4.12
750 - 999 $ 3.65
1000 - 9999 $ 3.16

Texas Instruments AFE4900YZT

The AFE4900 device is an analog front-end (AFE) for synchronized electrocardiogram (ECG), photoplethysmogram (PPG) signal acquisition. The device can also be used for optical bio-sensing applications, such as heart-rate monitoring (HRM) and saturation of peripheral capillary oxygen (SpO2). The PPG signal chain supports up to four switching light-emitting diodes (LEDs) and up to three photodiodes (PDs). The LEDs can be switched on using a fully integrated LED driver. The current from the photodiode is converted into voltage by the transimpedance amplifier (TIA) and digitized using an analog-to-digital converter (ADC). The ECG signal chain has an instrumentation amplifier (INA) with a programmable gain that interfaces to the same ADC. A right-leg drive (RLD) amplifier set can be used to the bias for the ECG input pins. AC and dc lead-off detect schemes are supported. The ADC codes from the PPG and ECG phases can be stored in a 128-sample first in, first out (FIFO) block and read out using either an I2C or a serial programming interface (SPI) interface.

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