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AFE49I30EVM
AFE49I30 ultra-low-power integrated AFE for wearable optical biosensing evaluation module
AFE49I30EVM
Overview
The AFE49I30 evaluation module (EVM) is a platform for expediting and evaluating system development activities related to the AFE49I30 product. AFE49I30 is an analog front end (AFE) for optical biosensing applications, such as heart-rate monitoring (HRM) and saturation of peripheral capillary oxygen (SpO2).
AFE49I30 supports six switching light-emitting diodes (LEDs) and four photodiodes. The current from the photodiode is converted into voltage by the transimpedance amplifier (TIA) and digitized using an analog-to-digital converter (ADC). ADC code can be stored in a 128-sample FIFO with programmable depth. FIFO depth can be partitioned to accommodate the phases that need to be stored. The FIFO can be read out using a serial peripheral interface (SPI).
The AFE also has a fully-integrated LED driver with an 8-bit current control. AFE49I30 can be clocked by an external clock or by internal oscillator. The device communicates to an external host processor using an SPI.
Features
- Acquire data at up to 1000 SPS in evaluation mode
- USB-based power and PC application connectivity
- Access to all AFE49I30 registers
- USB-based firmware upgrade option
- AFE49I30 evaluation module
- Micro-USB cable
- HRM sensor cable
Biosensing AFEs
Order & start development
Evaluation board
AFE49I30EVM — AFE49I30 ultra-low-power integrated AFE for wearable optical biosensing evaluation module
Technical documentation
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| Type | Title | Date | ||
|---|---|---|---|---|
| Certificate | AFE49I30EVM EU Declaration of Conformity (DoC) (Rev. A) | 04 May 2020 |
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