Useing MAX1447 ADC

[xoom]

Hi, I made voltmeter with this chip, it measures correct, everything looks right, but there is one problem.. At least not found anything about that in datasheet..
Problem is: When i turn it on it does something.. maybe calibration or smth and shows some numbers (like going up numbers from 0 to about 15000) when reaches some number then it blinks it once and then starts working normal. Anyone seen that? is is possible to disable that and make it get ready faster.. that counting takes about 2-3 seconds..

Sorry for my English.
Best Regards,
xoom

[MatthewEveritt]

From page 15 of the datasheet:

At power-up, the digital filter and modulator circuits reset.
The MAX1447/MAX1498 allows 6s for the reference to
stabilize before performing enhanced offset calibration.
During these 6s, the MAX1447/MAX1498 display 1.2V
to 1.5V when a stable reference is detected. If a valid
reference is not found, the MAX1447/MAX1498 time out
after 6s and begin enhanced offset calibration.
Enhanced offset calibration typically lasts 2s. The
MAX1447/MAX1498 begin converting after enhanced
offset calibration.

I've never used these parts, but it sounds like it's doing an offset calibration. I don't see any mention of being able to disable it, and by the sounds of it you probably don't want to.

[xoom]

I don't want to disable calibration. But i want to disable those showings I'm considering maybe better use Atmega for that. Also O.T. question.. for current measurement if i use leads from shunt resistor to another board. Much noise can be picked up? or better is to amplify it near shunt resistor then wire up to another board?