ICL7644IPD

Voltage Regulators - DC DC Switching Regulators Overview

The ICL7644IPD is a monolithic CMOS operational amplifier belonging to the ICL761X–ICL764X family, manufactured by Harris. It features a quad architecture with four independent amplifiers in a single package. The device utilizes a plastic DIP-14 package and operates from supply voltages ranging from ±1V to ±8V or single supplies from 2V to 16V. Key electrical characteristics include a typical input bias current of 1pA and programmable quiescent currents selectable via pins at 10µA, 100µA, or 1000µA per amplifier.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Ultra-low input bias current of 1pA typical value for high impedance applications
• Pin-selectable quiescent current options of 10µA, 100µA, or 1000µA per amplifier
• CMOS output stage capable of swinging to within millivolts of supply rails
• Wide supply voltage operation supporting dual and single supply configurations

Voltage Regulators - DC DC Switching Regulators Applications

• Long time constant integrators
• Picoammeters
• Low leakage amplifiers
• Low droop rate sample/hold amplifiers
• pH meters and photodiode amplifiers

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer origin as Harris Corporation when sourcing this component. Confirm the package type is the standard 14-pin plastic DIP (PD). Ensure the specific suffix matches the required temperature range and pin configuration. Cross-reference with the ICL76XX family datasheet to validate pin-out compatibility and electrical specifications against current inventory.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select the ICL7644IPD when multiple low-power, high-impedance amplification channels are required in a compact form factor. The choice depends on the need for ultra-low bias currents suitable for sensor interfaces. Consider the available pin-selectable quiescent current settings to optimize power consumption versus bandwidth requirements for the specific circuit design.

Voltage Regulators - DC DC Switching Regulators Part Context

This component is part of the broader ICL761X–ICL764X series of monolithic CMOS operational amplifiers. While other members of the family offer single, dual, or triple amplifier configurations, the ICL7644 variant specifically provides four amplifiers. This family is characterized by its low-power CMOS design and industry-standard pinouts, facilitating easy integration into existing analog signal processing systems.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Check for pin-for-pin second source equivalents within the ICL76XX family. Verify that any substitute maintains the 1pA typical bias current and compatible supply voltage ranges. Ensure the replacement package matches the 14-pin DIP specification for physical board compatibility.