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    Answered
  • RE: AFE4404: Programmable Timing Engine (PROG_TG)

    Payton Schubel
    Payton Schubel
    Resolved
    Hello Pawel, When measuring the LED phase of the data, you are really measuring both the LED data and the ambient data at the same time. Therefore, it is recommended to measure the ambient data directly and subtract it from the data measured during the…
    • 9 days ago
    • Data converters
    • Data converters forum
  • AFE4404: ADC_RDY always 0, LED1VAL (0x2C) always 0

    J P
    J P
    TI Thinks Resolved
    Part Number: AFE4404 Tool/software: Hi everyone, I'm currently working with the AFE4404 connected to an STM32L471RET6 , and I'm trying to read PPG data using only LED1 and a single photodiode (SD019-141-411-G) Problem: The ADC_RDY pin always…
    • 13 days ago
    • Data converters
    • Data converters forum
  • RE: AFE4404: Minimum LEDs duty cycle and time to sampling

    Ryan Andrews
    Ryan Andrews
    Hi Michael - please excuse the delay as I'm just returning to office from paternity leave. I found a note in the Revision History (pg. 2) as well as in the Applications Section (pg. 70) which explains that at least 25µs is recommended to improve ambient…
    • 5 months ago
    • Data converters
    • Data converters forum
  • AFE4404: Design review

    HSIN Betty
    HSIN Betty
    TI Thinks Resolved
    Part Number: AFE4404 Other Parts Discussed in Thread: TPS61041 , Tool/software: Hi Ti, Please design review for AFE4404YZP、TPS61041、TPS22916B. Thanks!
    • 7 months ago
    • Data converters
    • Data converters forum
  • Answered
  • RE: AFE4404: reads data from multiple registers sequentially

    Te_Chen Shen
    Te_Chen Shen
    Resolved
    I found the answer from . AFE4404: AFE4404 PPG output AFE4404 does not have FIFO. You will need to read the ADC output registers that you pointed out for the PPG data corresponding to the respective LEDs By Praveen Aroul .
    • 6 months ago
    • Data converters
    • Data converters forum
  • AFE4404: AFE4404 Configuration Tool

    Ehad Akeila
    Ehad Akeila
    TI Thinks Resolved
    Part Number: AFE4404 Hi, I've started working on evaluating AFE4404 using an external MCU. I wonder if there is a configuration tool that automatically generates all the device registers in a way that can be included in the code (something like an excel…
    • over 1 year ago
    • Data converters
    • Data converters forum
  • RE: AFE4404: the measurement of SpO2

    ?? ??
    ?? ??
    I’m sorry to be pressing, but an immediate response is highly appreciated.
    • 11 months ago
    • Data converters
    • Data converters forum
  • AFE4404: Overlapping LED on time

    David Tobler
    David Tobler
    TI Thinks Resolved
    Part Number: AFE4404 I have a special test mode that is need. It requires that all three LEDs be on at the same time for most all of the Repetition Interval. The "normal" operational settings are for 100Hz at 1% duty cycle, with typical sequential sampling…
    • over 1 year ago
    • Data converters
    • Data converters forum
  • AFE4404: Alternate use suitability

    Joshua Gammie
    Joshua Gammie
    TI Thinks Resolved
    Part Number: AFE4404 Hello there, We're currently looking at using the AFE4404 to drive an LED for 5us and read back a different wavelength for 10us using a PD. We're specifically looking at the intensity and decay time of the PD reading. Is the AFE4404…
    • over 1 year ago
    • Data converters
    • Data converters forum
  • Answered
  • AFE4404: About AFE4404 buffer

    Yasumori Rina
    Yasumori Rina
    Resolved
    Part Number: AFE4404 Hello, Let me know if you know... Is there a buffer that can store the measured values to a certain extent in the AFE4404? Also, can you tell me the hex that reads the LED and IR? Please help me... Lina
    • Resolved
    • over 2 years ago
    • Data converters
    • Data converters forum
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