ICL7614DCSA

Overview

The ICL7614DCSA is a single-channel monolithic CMOS operational amplifier from the ICL761X–ICL764X family. It features externally selectable quiescent currents of 10μA, 100μA, or 1000μA via an IQ pin. The device operates on supply voltages ranging from ±1V to ±8V (2V to 16V single supply). Key electrical parameters include a typical input bias current of 1pA, unity-gain bandwidth of 0.044MHz at 10μA, and slew rate of 0.016V/µs at 10μA. It utilizes an 8-pin SOIC package with a commercial temperature range of 0°C to +70°C.

Feature Summary

• Externally compensated architecture allowing user-defined frequency compensation for stability optimization
• Pin-selectable quiescent current settings enabling trade-offs between power consumption and performance speed
• Ultra-low input bias current characteristics suitable for high-impedance signal sources

Applications

• Long time constant integrators
• Picoammeters
• Low droop rate sample/hold amplifiers
• Photodiode amplifiers

Procurement Notes

Verify the specific suffix 'DCSA' corresponds to the 8-pin Small Outline package and the C-series commercial temperature range (0°C to +70°C). Confirm that the external compensation requirement aligns with the circuit design, as this distinguishes it from internally compensated variants like the ICL7611. Ensure the selected quiescent current setting meets the application's bandwidth needs.

Selection Notes

Select the ICL7614DCSA when external frequency compensation is required to tailor bandwidth and phase margin for specific load conditions. Choose this part over internally compensated models if the application demands precise control over stability margins. Verify that the chosen quiescent current setting provides sufficient slew rate and bandwidth while maintaining low power dissipation within the thermal limits of the SOIC-8 package.

Part Context

This component belongs to the ICL761X–ICL764X family of low-power CMOS operational amplifiers. Unlike the internally compensated ICL7611, the ICL7614 variant requires an external capacitor for stability. It shares the same ultra-low bias current and programmable power characteristics as other members of the series but offers flexibility in frequency response tuning through its dedicated compensation pins.

Replacement Considerations

Direct pin-compatible replacements within the same family include the ICL7611, which is internally compensated. Substituting the ICL7614 with an internally compensated model may require removing the external compensation capacitor to prevent instability. Conversely, replacing an internally compensated op amp with the ICL7614 necessitates adding the appropriate external compensation network.