ICL7612BESA+T

Overview

The ICL7612BESA+T is a single-channel monolithic CMOS operational amplifier from the ICL761X family, housed in an 8-pin SOIC package. It operates within a supply voltage range of ±1V to ±8V (2V to 16V single supply). Key electrical parameters include a unity-gain bandwidth of 44 kHz, a slew rate of 0.016 V/µs at 10µA quiescent current, and an input bias current of 50 pA maximum. The device features an extended common-mode voltage range, low noise voltage density of 100 nV/√Hz, and supports programmable quiescent currents.

Feature Summary

• Ultra-low input bias current capability suitable for high-impedance source applications
• Pin-selectable quiescent current settings allowing optimization between power consumption and performance
• Extended common-mode voltage range specific to the ICL7612 variant
• Rail-to-rail output swing capability approaching supply voltages

Applications

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

Procurement Notes

Verify the component origin as Analog Devices or Maxim Integrated, noting that the + suffix indicates lead-free compliance. Confirm the 'E' temperature grade corresponds to the -40°C to +85°C industrial range and the 'SA' package designation matches the 8-pin Slim Small Outline configuration. Ensure the datasheet revision aligns with the specified electrical characteristics for the B offset voltage grade.

Selection Notes

Select this component when ultra-low input bias current is critical for signal integrity. The ICL7612 variant offers an extended common-mode voltage range compared to other members of the ICL761X family. Designers must account for the trade-off between quiescent current settings and bandwidth, as higher current modes increase slew rate but also power dissipation. Verify that the required gain-bandwidth product fits within the 44 kHz limit at the lowest power setting.

Part Context

This part belongs to the ICL761X–ICL764X family of monolithic CMOS operational amplifiers. The family includes single, dual, triple, and quad configurations. The ICL7612 specifically denotes a single-channel amplifier with extended common-mode voltage range capabilities. The series is characterized by its CMOS construction, which enables very low power operation and high input impedance.

Replacement Considerations

The documentation identifies pin-for-pin second sources for this family. Verify compatibility with alternative manufacturers offering identical pinouts and electrical specifications for the ICL761X series before substitution.