On Sun, Jan 30, 2011 at 6:30 AM, N. T. wrote: > V G wrote: > > So after taking various advice from everyone here, I've done some > research > > on opamps and selected two different parts. Hopefully I made the right > > decision. > > > > For the instrumentation amplifier, I chose the LT1168 because all the > specs > > 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. > --- > That's a nice chip, but I really like DIP packages. Surface mount is very hard to prototype with. I don't have any adapters either. So for now, I'll stick with everything DIP. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .