The ICL761XICL764X family of monolithic CMOS op amps combine ultra-low input current with low-power operation over a wide supply voltage range. With pinselectable quiescent currents of 10A, 100A, or 1000A per amplifier, these op amps will operate from 1V to 8V power supplies, or from single supplies from 2V to 16V. The CMOS outputs swing to within millivolts of the supply voltages. The ultra-low bias current of 1pA makes this family of op amps ideal for long time constant integrators, picoammeters, low droop rate sample/hold amplifiers and other applications where input bias and offset currents are critical. A low noise current of 0.01pAHz and an input impedance of 1012 ensure optimum performance with very high source impedances in such applications as pH meters and photodiode amplifiers.