AD8544ARUZ-REEL

Overview

The AD8544ARUZ-REEL is a quad 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 an input bias current as low as 4 pA. It provides rail-to-rail input and output capabilities, ensuring high gains at lower supply voltages. The component is specified over an extended industrial temperature range of –40°C to +125°C.

Feature Summary

• Rail-to-rail input and output operation for maximum dynamic range in single-supply systems
• Very low supply current consumption of 45 µA per amplifier ideal for battery-powered applications
• High input impedance with extremely low input bias currents suitable for high source impedance sensors
• No phase reversal during common-mode voltage transitions

Applications

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

Procurement Notes

Verify the specific package marking code RU-14 and ensure the reel quantity matches the design requirements. Confirm RoHS compliance status and check for automotive qualification if operating in harsh environments. Validate that the ordering suffix corresponds to the desired tape and reel packaging format before finalizing procurement.

Selection Notes

Select this component when low power consumption is critical alongside moderate bandwidth requirements. The quad configuration allows multiple signal paths within a single footprint. Ensure the application benefits from rail-to-rail performance and does not require shutdown functionality. Consider thermal resistance values for PCB layout planning under continuous load conditions.

Part Context

This part belongs to the AD854x family of CMOS amplifiers, which includes single (AD8541), dual (AD8542), and quad (AD8544) variants. The series represents an improvement over previous generations by offering lower supply current while maintaining a 1 MHz gain bandwidth. The AD8544 specifically integrates four independent amplifiers in a compact surface-mount package.

Replacement Considerations

Direct pin-compatible substitutes include other members of the AD854x family such as the AD8542ARUZ for dual-channel applications. Automotive qualified versions like the AD8544WARZ are available for specialized reliability requirements.