For your temperature sensor and/or ADC consider the Analog Devices AD537 voltage to frequency converter chip. It has an onboard temperature sensor or could be interfaced to a thermistor, etc. The on chip sensor has a fairly large thermal mass. If you need instantaneous response to temperature use a very small thermistor.
Since the output is frequency, any time nut worth his/her/its salt should be able to come up with a suitable counter circuit. One system that I did had the V/F freq set around 200 Hz. Counting a 16 MHz clock over 256 cycles of V/F waveform yielded microdegree resolution. ---------------------------------------- _________________________________________________________________ Get more from your digital life. Find out how. http://www.windowslive.com/default.html?ocid=TXT_TAGLM_WL_Home2_082008 _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
