Description
AFE4900YZR Texas Instruments - Yeehing Electronics
Ultra-low-power integrated AFE for wearable optical, electrical biosensing
Pricing (USD)
Quantity | Unit Price |
1 — 99 | 17.244 |
100 — 249 | 14.058 |
250 — 999 | 11.05 |
1,000 + | 6.56 |
The above prices are for reference only.
Specifications
Manufacturer | Texas Instruments |
Product Category | Analog Front End - AFE |
Series | AFE4900 |
Type | Ultra Low Power |
Resolution | 24 bit |
Sampling Rate | 1 kS/s |
Number of Channels | 3 Channel |
Interface Type | I2C, SPI |
Supply Voltage - Max | 5.25 V |
Supply Voltage - Min | 1.7 V |
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 |
Product Type | Analog Front End - AFE |
Factory Pack Quantity | 3000 |
Subcategory | Data Converter ICs |
For more information, please refer to datasheet
Documents
AFE4900YZR Datasheet |
More Information
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.