AD8544ARUZ

Overview

The AD8544ARUZ is a quad, rail-to-rail input and output, single-supply CMOS operational amplifier. It operates from a 2.7 V to 5.5 V supply with a typical supply current of 45 µA per amplifier. The device features a 1 MHz gain bandwidth product, low input bias current of 4 pA, and unity gain stability. It is housed in a 14-lead TSSOP package and specified over the extended industrial temperature range of –40°C to +125°C.

Feature Summary

• Rail-to-rail input and output capability for maximum dynamic range
• Low power consumption suitable for battery-operated systems
• High input impedance with very low bias current
• No phase reversal during common-mode voltage transitions

Applications

• ASIC input or output amplifiers
• Sensor interfaces
• Piezoelectric transducer amplifiers
• Photodiode applications
• Comparator function for overload detection

Procurement Notes

Verify the specific ordering suffix RUZ corresponds to the 14-lead TSSOP package configuration required for your design. Confirm that the standard commercial grade meets the environmental specifications for your application, as automotive variants carry different suffixes. Ensure ESD precautions are observed during handling due to the sensitivity of the CMOS input stage.

Selection Notes

Select this component when a quad amplifier configuration is needed with rail-to-rail performance on a single supply. It is appropriate for designs requiring low quiescent current alongside moderate bandwidth. Consider the 14-lead TSSOP footprint for board layout constraints. Verify that the input bias current and offset voltage characteristics align with the precision requirements of the signal chain.

Part Context

This part belongs to the AD854x family of general-purpose CMOS amplifiers, which includes single (AD8541) and dual (AD8542) channel versions. The family is designed to offer improved performance at lower supply voltages compared to previous generations while maintaining low power consumption. The quad version provides four independent channels in a compact surface-mount package.

Replacement Considerations

Direct functional replacements within the same package include the AD8544ARZ in the 14-lead SOIC package, provided the physical footprint allows for the wider body dimensions.