AD8542AR-REEL7

Overview

The AD8542AR-REEL7 is a dual-channel CMOS rail-to-rail general-purpose operational amplifier manufactured by Analog Devices Inc. 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 features a gain-bandwidth product of approximately 1 MHz and unity-gain stability. Input bias current is typically 4 pA, supporting high source impedance applications. It is specified over an extended industrial temperature range of -40°C to +125°C.

Feature Summary

• Rail-to-rail input and output capability for maximum dynamic range in single-supply systems
• Very low input bias current suitable for high-impedance sensor interfaces
• Unity-gain stable design without phase reversal issues
• Optimized AC performance at lower supply voltages

Applications

• ASIC input or output amplifiers
• Sensor interfaces
• Piezoelectric transducer amplifiers
• Medical instrumentation
• Portable battery-powered systems

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and reel quantity. Ensure the component meets RoHS compliance requirements if applicable to your manufacturing process. Cross-reference the datasheet revision to confirm electrical characteristics match your design specifications before finalizing procurement.

Selection Notes

Select this component when designing circuits requiring low power consumption alongside moderate bandwidth. The dual-channel configuration is ideal for space-constrained designs needing two independent amplification paths. Consider the rail-to-rail input/output swing if operating near supply rails is necessary. Verify thermal resistance values for your specific PCB layout to ensure reliable operation within the specified temperature range.

Part Context

This part belongs to the AD854x family of general-purpose amplifiers, which includes single (AD8541), dual (AD8542), and quad (AD8544) channel variants. All members share similar electrical characteristics, including low supply current and 1 MHz bandwidth. The AD8542 specifically provides two amplifiers in an 8-lead surface-mount package, offering a balance between channel count and board space efficiency.

Replacement Considerations

Direct functional substitutes within the same family include AD8541ARMZ and AD8544ARMZ, though channel counts differ. Other models like AD8532 offer higher output current but may have different power profiles. Always verify pin compatibility and electrical specifications against the target application requirements before substituting.