AD8542ARZ-REEL7

Overview

The AD8542ARZ-REEL7 is a dual-channel CMOS operational amplifier from the AD854x family, housed in an 8-lead SOIC surface-mount package. It features rail-to-rail input and output capabilities with a gain-bandwidth product of approximately 1 MHz. The device operates on a single supply voltage ranging from 2.7 V to 5.5 V, consuming only 45 µA per amplifier. Key electrical characteristics include a maximum input offset voltage of 6 mV at 25°C and low input bias current of 4 pA. It is specified for operation across an extended industrial temperature range of -40°C to +125°C.

Feature Summary

• Rail-to-rail input and output capability allows full signal swing within the supply voltage range.
• Low power consumption of 45 µA per amplifier extends battery life in portable applications.
• Unity-gain stable design ensures stability without external compensation components.
• No phase reversal occurs during large-signal overdrive conditions.

Applications

• ASIC input or output buffering
• Piezoelectric transducer amplification
• Photodiode amplifiers
• Active filters

Procurement Notes

Verify that the ordering suffix REEL7 corresponds to the specific tape and reel packing quantity required for automated assembly processes. Confirm RoHS compliance status indicated by the Z suffix. Ensure the component matches the 8-lead SOIC physical dimensions and pinout configuration before integration into the printed circuit board layout.

Selection Notes

Select this component when high input impedance and low quiescent current are critical requirements. The rail-to-rail performance makes it suitable for low-voltage single-supply systems where maximizing dynamic range is necessary. Consider the 1 MHz bandwidth for moderate-speed signal processing tasks requiring minimal power dissipation.

Part Context

This part belongs to the AD854x series of general-purpose CMOS amplifiers, which includes single (AD8541), dual (AD8542), and quad (AD8544) channel variants. The series is designed to replace older generation amplifiers by offering similar bandwidth with significantly reduced supply current. The AD8542 specifically provides two independent channels in a compact footprint.

Replacement Considerations

Direct functional replacements within the same family include AD8541 and AD8544, though channel counts differ. Cross-family replacements require matching rail-to-rail specifications and supply voltage ranges. Verify thermal resistance values and package compatibility if substituting with other manufacturers' parts.