At 01:59 PM 6/4/02 -0400, A.J. Tufgar wrote: >Hello all, > I was wondering how I'd go about using the ADC on the >PIC16LF627 to measure the output of a wheatstone bridge (from a pressure >transducer). Do I need any support components to bring the differental >output back to ground? Umm . . . The '627 does NOT have an ADC. You can fake one by making a dual slope convertor using one of the comparitor inputs but since you need a differential input, I'd seriously consider using an external dual op-amp configured as a diff in, diff out amplifier (needs only 3 resistors) followed by a LTC1298 12 bit a/d used in differential input mode. This is exactly what I use to measure strain guages and pressure sensors and it works well. You have one of the easiest types of sensor to measure - the output is ratiometric and is biased at half the excitation voltage. dwayne -- Dwayne Reid Trinity Electronics Systems Ltd Edmonton, AB, CANADA (780) 489-3199 voice (780) 487-6397 fax Celebrating 18 years of Engineering Innovation (1984 - 2002) .-. .-. .-. .-. .-. .-. .-. .-. .-. .- `-' `-' `-' `-' `-' `-' `-' `-' `-' Do NOT send unsolicited commercial email to this email address. This message neither grants consent to receive unsolicited commercial email nor is intended to solicit commercial email. -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body