AD8618ARZ

Overview

The AD8618ARZ is a quad-channel, precision CMOS operational amplifier featuring rail-to-rail input and output capabilities. It operates on single supplies ranging from 2.7 V to 5 V. Key electrical specifications include a maximum offset voltage of 65 µV, a gain-bandwidth product of 24 MHz, and a slew rate of 12 V/µs. The device provides an output current capability of 150 mA per channel with a supply current of approximately 2 mA per amplifier.

Feature Summary

• Patented DigiTrim trimming technique ensures superior precision without laser trimming.
• Immune to output phase reversal when input common-mode voltage exceeds the supply rails.
• High output drive capability suitable for low-impedance applications such as audio line drivers.

Applications

• Multipole filters
• Photodiode amplification
• Battery-powered instrumentation

Procurement Notes

Verify that the specific part number matches the required package type, which is the 14-lead SOIC (R-14). Confirm the revision level against the manufacturer's documentation to ensure compatibility with design requirements. Check RoHS compliance status if environmental regulations apply to the final assembly.

Selection Notes

Select this component for designs requiring high DC accuracy combined with wide signal bandwidth in single-supply systems. The rail-to-rail I/O functionality allows for maximum dynamic range utilization. Ensure the application load does not exceed the thermal dissipation limits defined by the package junction-to-ambient resistance.

Part Context

This device belongs to the AD8615/AD8616/AD8618 family of precision amplifiers. While the AD8615 offers a single channel and the AD8616 provides dual channels, the AD8618 integrates four independent amplifiers within a single package. All variants share identical electrical performance characteristics and utilize the same patented trimming technology.

Replacement Considerations

Direct functional substitutes within the same family include the AD8615ARZ and AD8616ARZ, provided the channel count difference is acceptable for the circuit design. Other packages such as TSSOP are available under different suffixes like AD8618ARUZ.

FAQ

Does the AD8618 experience output phase reversal?

No, the AD8618 is immune to phase inversion even when the input voltage exceeds the maximum common-mode limit.

How is precision achieved without laser trimming?

The device utilizes a patented trimming technique that achieves superior precision without the need for laser trimming.