Part Number: AFE4404
Hi.
I'm testing it with AFE4404.
If I check the Enable Calibration Routine in the AFE4404 EVM GUI, does the calibration apply to all LEDs 1, 2, and 3?
I look at the calibration_afe4404.c file, I think it can be changed to LED_SEL…
Part Number: AFE4404 Hi.
I'm measuring PPG on my wrist with AFE4404.
I look at the datasheet, 2A to 2C is LED1VAL, LED3VAL, LED2VAL.
But if you look at 2D to 2F, you get the value of ambient.
What is ambient?
I can get the value by lighting the LED…
Hi Kim,
AGC is a type of circuit relies on an analog, variable signal as a feedback input to dynamically change it's out. The AFE4404 does not have an AGC circuit. The Calibration_AFE4404.c will, through software, set configuration registers within the…
Part Number: AFE4404 Dear Sir or Madam We are having an issue regarding your AFE4404. We have a device collecting PPG samples from 3 channels - green (channel 1), red (channel 2) and infrared (channel 3). We have collected thousands of PPG signals and…
Hi Kim,
I've sent answers for your original post over email. For housecleaning purposes, I'll be closing out this post.
If you need any additional support, please follow up with me on that email thread.
Kind regards, Nick Z
Part Number: AFE4404 Hi.
I am developing PPG measurement with AFE4404 and nRF52832.
I'm getting PPG data from my wrist, and I have a question.
The picture below is my data, and from the top, it's Green, IR, and Red PPG
But most PPG look like…
Hi Camilo,
Since I did not hear back from you for quite some time, I assume that your issue has been solved.
Note that I'll go ahead and close this thread. Replying to the thread will re-open it if necessary at some point.
Part Number: AFE4404 Other Parts Discussed in Thread: AFE4900 Hi.
While looking around the AFE4404 data sheet, I found a three-LED mode.
Is this the same mode as AFE4900 FIFO mode?
If it's correct, tell me how to use it.
If not, is there a way to…
Hi Praveen,
Apologies for the late response. Our cusotmer's have raised another questions regarding AFE4404. Could you help to answer.
Here it is:
"I am not sure that the data I read from the register 2A~2F is accurate, and I am not sure whether the…
