Hi all, I urgently seek for advises.
Based on the info in ADS1x9xECG-FE Demo kit, I'm trying to make a simple 1-channel ECG monitor with ADS1292 and MSP430F532x.
Things went quite OK until I just found out the ADC values are not quite normal.
Digging in, trying to find the cause of the problem, I tried Supply Measurement configuration and the result weren't as I expected.
The configuration I used is as follows.
|
const unsigned char ADS1x9x_Default_Register_Settings[15] = { //Device ID read Only |
Applying the listed configuration gave me 1.5V reading on ADS1x9xECG-FE, but my design gave me (around) 0V reading.
The voltages on the outside looks quite promising, except for the voltage at RLDOUT pin.
That is, using 3.3V DVDD and 3.0V AVDD, I get 2.4V @ VREF, 5V @ CAP2, 1.2V @ VCAP1.
However, RLDOUT gave me ~2.5V and RLDINV gave me ~1.2V.
Any suggestions that I can consider trying?
p.s. FYI, "Test Signal" configuration works fine. It gives me 1Hz square wave.
