ICL7641CCWE

Overview

The ICL7641CCWE is a quad monolithic CMOS operational amplifier from the ICL76XX family, manufactured by Analog Devices Inc./Maxim Integrated. It features four amplifiers in a 16-pin Wide SO package with an operating temperature range of 0°C to +70°C. The device offers ultra-low input bias current and low power consumption over a wide supply voltage range of ±1V to ±8V or single supplies from 2V to 16V. Key electrical characteristics include a typical unity-gain bandwidth of 0.044 MHz at 10µA quiescent current, a maximum input offset voltage of 10mV, and rail-to-rail output swing capability.

Feature Summary

• Monolithic CMOS design providing ultra-low input bias current for high-impedance source applications
• Wide supply voltage operation supporting both dual and single supply configurations
• Rail-to-rail output voltage swing capability approaching supply rails under light loads
• Industry-standard pinouts ensuring compatibility with existing circuit layouts

Applications

• Long-time constant integrators requiring minimal leakage
• Picoammeters utilizing ultra-low input bias currents
• Low droop rate sample/hold amplifiers
• pH meters and photodiode amplifiers with high source impedance
• Battery-powered instruments prioritizing low power consumption

Procurement Notes

Verify the specific suffix 'CCWE' against the manufacturer's official ordering information to confirm the 0°C to +70°C temperature grade and 16-pin Wide SO package configuration. Ensure that the component matches the exact part number designation as variations in suffixes may indicate different performance grades or packaging types within the same family.

Selection Notes

Select this component when designing circuits that require multiple low-power amplifiers with extremely low input bias currents. The quad configuration allows for space-efficient designs in battery-operated systems. Consider the trade-off between quiescent current settings and bandwidth requirements if using other members of the family, though this specific quad variant has fixed internal settings.

Part Context

This component belongs to the ICL761X–ICL764X family of monolithic CMOS operational amplifiers. The family combines ultra-low input current with low-power operation. The '7641' designation indicates a quad amplifier configuration, while the 'C' suffix specifies the commercial temperature range and offset voltage grade, and 'WE' denotes the 16-pin Wide Small Outline package.

Replacement Considerations

Check for direct pin-for-pin second sources listed in the official documentation. Verify that any substitute maintains the same quad configuration, package type, and temperature range specifications to ensure functional equivalence without redesigning the host circuit.