LMC669

The LMC669 uses sampled-data techniques to reduce the input offset voltage (VOS) of an amplifier or system to approximately 5 V.A four-stage comparator samples the summing node of an inverting-amplifier's a correction voltage that is applied to the amplifier's non-inverting input.The offset correction is independent of time,temperature,and supply voltage,and requires no initial or periodic user offset adjustments.

Features of the LMC669 are:(1)s microvolts typical offset voltage;(2)temperature independent offset correction;(3)internal or external clocking;(4)automatic and continuous offset voltage correction;(5)high voltage CMOS up to ±20V supplies.

The absolute maximum ratings of the LMC669 can be summarized as:(1):the parameter is positive supply voltage,the rating is +22,the unit is V;(2):the parameter is negative supply voltage,the rating is -22,the unit is V;(3):the parameter is voltage of logic pins,the rating is -0.2 to V++0.2,the unit is V;(4):the parameter is voltage at inputs,the rating is -0.2 to V++0.2,the unit is V;(5):the parameter is input current,the rating is 20,the unit is mA;(6):the parameter is power dissipation,the rating is 500,the unit is mW;(7):the parameter is storage temperature,the rating is -65 to +150,the unit is ;(8):the parameter is lead temperature (soldering, 10 sec),the rating is 300,the unit is .

The operating ranges of the LMC669 can be summarized as:(1):the parameter is temperature range,the rating is -40TA+85,the unit is ;(2):the parameter is negative supply voltage,the rating is -8 to -20,the unit is V;(3):the parameter is positive supply voltage,the rating is +8 to +20,the unit is V;(4):the parameter is INREF,IN1 and IN2 voltage,the rating is -200mV to +2,the unit is V;(5):the parameter is ESD susceptability,the rating is 600,the unit is V.