23.-29.9.

In the past week we met with Sonja and Gerardo to test the ADS1292 on the adapter constructed previously. We assembled a test circuit from TI and connected 1.5V-3V to the input (variated by a voltage divider done by resistors and a potentiometer). We measured the output with an oscilloscope, but failed to get any rational output signal and called it a day.

Circuit on the protoboard with power sources of 1.8V and 3V 

The next time we met, we tested the ready circuit for an expected gain of ~15.56 dB(?), but looking at the multiplexer configuration of the ADS, it seemed that the switch config had to be programmed separetely, to be able to get the desired gain. No reasonable output was seen.

Later, I managed to finish the µcontroller adapter. I soldered the MSP430 QFN-package by hand and ended up with a fairly good result. The connections seem good according to multimeter measurements, but further testing will show if the chip overheated. This I doubt, because I soldered each pin heating them for only ~2 seconds. Here are some pictures of the final outcome:

Magnified from the previous image.