AD8542ARU

Overview

The AD8542ARU is a dual-channel CMOS operational amplifier featuring rail-to-rail input and output capabilities. It operates on a single supply voltage ranging from 2.7 V to 5.5 V with a typical supply current of 45 µA per amplifier. The device provides a gain-bandwidth product of approximately 1 MHz and maintains unity-gain stability without phase reversal. Input bias current is typically 4 pA, supporting high-impedance applications. It functions reliably across an extended industrial temperature range of -40°C to +125°C.

Feature Summary

• Rail-to-rail input and output voltage swing for maximum dynamic range in single-supply systems
• Extremely low input bias current suitable for high source impedance circuits
• Unity-gain stable with no phase reversal issues during common-mode transitions
• Optimized AC performance at lower supply voltages

Applications

• ASIC input or output buffering
• Piezoelectric transducer amplification
• Photodiode signal conditioning
• Active filter stages
• Portable battery-powered instrumentation

Procurement Notes

Verify the specific suffix 'RU' corresponds to the 8-lead TSSOP package configuration required for your layout. Confirm RoHS compliance status as indicated by the 'Z' suffix in official ordering guides, noting that the base model may differ in environmental certification. Ensure the operating temperature range requirements align with the specified -40°C to +125°C industrial limits before finalizing procurement.

Selection Notes

Select this component when designing low-power single-supply systems requiring full voltage swing capability. The dual-channel architecture reduces board space compared to using two single-channel devices. Consider the 1 MHz bandwidth sufficient for moderate-speed signal processing while maintaining ultra-low quiescent current consumption ideal for extending battery life in portable electronic devices.

Part Context

This part belongs to the AD854x family of general-purpose CMOS amplifiers, which includes single (AD8541) and quad (AD8544) channel variants. All members share identical electrical characteristics and pinout compatibility within their respective channel counts. The family is designed to replace older generation amplifiers by offering similar performance metrics at significantly reduced power consumption levels.

Replacement Considerations

Direct functional replacements include the AD8541 (single channel) and AD8544 (quad channel) from the same manufacturer. Cross-manufacturer equivalents should be evaluated based on matching rail-to-rail specifications, supply current constraints, and package dimensions.