Part Number: AFE4490 Hi,
Let me ask you a question about "Health Hub" of TIDA-00010.
As I would like the related documents of "Health Hub", I requested it via following site and form.
But, to my regret, I have not received any reply…
Part Number: AFE4490 Hi!
I would like to know what "Rx sample time" refers to on page 28 in the AFE4490 Datasheet. At first I believed it is Pulse repetition period, so 1/PRF, but sample time could also refer to the duration of one single pulse. That…
Part Number: AFE4490
Hi,
On the AFE4490, there is an anti-aliasing RC filter for the TIA. The values of Rf and Cf are configurable. According to the spec in equation 1, the upper bound for the Cf is obtained from the following formula: Rf x Cf <= RxSampleTime…
Part Number: AFE4490SPO2EVM Other Parts Discussed in Thread: AFE4490 Tool/software: Hi, I am currently working on a design involving the AFE4490 and have encountered a few questions.
We are planning to deviate from using the existing NellCor DS-100A…
Part Number: AFE4490 I have 2 x AFE4490EVM board (as a set with usb cables and finger probes). I setup AFE44x0SPO2EVM GUI on 4 different Windows 10 PC regarding the steps in user guide, also i installed the USB driver regarding AFE44x0SPO2EVM User's Guide…
Part Number: AFE4490SPO2EVM Other Parts Discussed in Thread: AFE4490 Hello
We are starting an oximetry project using AFE4490 EVM.
Could someone clarify about the presence of "flying" 130 Ohm resistors on pins 5, 6 and 10 (all DNC)? Also on pin 7 (BG) and…
Part Number: AFE4490SPO2EVM Other Parts Discussed in Thread: AFE4490 , Tool/software: Hi, I am working on directly fetching ppg signals from AFE4490 using a dev board (without using AFE4490SPO2EVM) running on embedded linux via spi device "/dev/spidev0…
Part Number: AFE4490
I'm struggling with understanding the filter part of AFE4490. I hope somebody could clear it out. I read this thread here , but it did not provide the logic behind the choices.
The first confusion is the performance of anti…
Part Number: AFE4490 Hello,
I use board with afe4490 (its arduino shild):
I want to make the most accurate calculation for SpO2.
I measured the signals and displayed them on the plotter:
channel 0 (RED)
channel 1 (IR)
channel 2 (inverted and removed DC…
Part Number: AFE4490 Hi Team,
Our customer would like to know the value of the Input Current Noise of the transimpedance amplifier in pA/√Hz. I have searched the Forum and other documents but I can find this value. Is it the same as the Input-Referred Noise…