V G wrote: > So after taking various advice from everyone here, I've done some researc= h > on opamps and selected two different parts. Hopefully I made the right > decision. > > For the instrumentation amplifier, I chose the LT1168 because all the spe= cs > I looked at are superior to those of the AD620. LT1168 is 10+ years old. Why not LTC2053? --- LTC2053 is a high precision instrumentation amplifier. The CMRR is typically 116dB with a single or dual 5V supply and is independent of gain. The input offset voltage is guaranteed below 10=B5V with a temperature drift of less than 50nV/=B0C. The LTC2053 is easy to use; the gain is adjustable with two external resistors, like a traditional op amp. --- --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .