MAXIM ICL7621DCPA+

The ICL761X–ICL764X family of monolithic CMOS op amps combine ultra-low input current with low-power operation over a wide supply voltage range. With pin - selectable quiescent currents of 10μA, 100μA, or 1000μA 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 milli - volts 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 0.01pA√Hz and an input impedance of 10¹²Ω ensure optimum performance with very high source impedances in such applications as pH meters and photodiode amplifiers.

• Pin - for - Pin Second Source
• 1pA Typical Bias Current—4nA (max) at +125°C
• ±1V to ±8V Wide Supply Voltage Range
• Industry - Standard Pinouts
• Programmable Quiescent Currents of 10μA, 100μA and 1000μA
• Monolithic, Low - Power CMOS Design

• Battery - Powered Instruments
• Low - Leakage Amplifiers
• Long - Time Constant Integrators
• Low - Frequency Active Filters
• Hearing Aids and Microphone Amplifiers
• Low Droop Rate Sample/Hold Amplifiers
• Picoammeters