ADA4075-2ARZ-R7

Overview

The ADA4075-2ARZ-R7 is a dual-channel, ultralow noise operational amplifier manufactured by Analog Devices Inc. It utilizes the iPolar process to achieve high performance with low power consumption. Key electrical parameters include a typical voltage noise density of 2.8 nV/√Hz at 1 kHz and a total harmonic distortion plus noise of 0.0002%. The device features a gain bandwidth product of 6.5 MHz and a slew rate of 12 V/μs. It operates on dual supplies ranging from ±4.5 V to ±18 V, draws 1.8 mA per amplifier, and maintains an offset voltage of 1 mV maximum. It is specified for operation within the -40°C to +125°C temperature range.

Feature Summary

• Combines ultralow noise and distortion characteristics with low supply current consumption.
• Features phase reversal prevention circuitry that clamps the output when inputs exceed common-mode limits.
• High slew rate and wide bandwidth suitable for demanding signal processing applications.

Applications

• Precision instrumentation
• Professional audio signal processing
• Active filters
• Low noise amplifier front ends

Procurement Notes

Verify the specific package type matches the design requirements, as the component is available in both SOIC and LFCSP configurations. Confirm the ordering suffix corresponds to the desired reel quantity and packaging format. Ensure the input supply sequencing adheres to the absolute maximum ratings to prevent damage during power-up or shutdown cycles.

Selection Notes

Select this component for applications requiring minimal signal degradation where low power is critical. The device offers excellent DC accuracy with low offset voltage and drift. Consider the trade-off between the ultralow noise performance and the requirement for external current-limiting resistors if differential input voltages may exceed safe limits.

Part Context

This part belongs to the ADA4075 series of ultralow noise amplifiers. It is designed using the iPolar advanced bipolar technology, which implements vertical junction isolation with lateral trench isolation. This manufacturing process enables smaller die sizes while maintaining fast speed and low power characteristics compared to standard bipolar technologies.

Replacement Considerations

Consult official documentation for verified substitutes such as the ADA4075-2ACPZ-R7, which shares identical electrical specifications but utilizes an 8-lead LFCSP package instead of the SOIC form factor.

FAQ

Does the ADA4075-2 suffer from phase reversal?

No, the device incorporates phase reversal prevention circuitry that clamps the output to approximately 2 V from the supply rails when one or both inputs exceed the specified common-mode voltage range.

What is the recommended approach for input protection?

To preserve ultralow noise performance, internal current-limiting resistors are omitted. External current-limiting resistors should be employed if the differential input voltage exceeds ±1.2 V to limit currents below ±10 mA.