AD8554ARUZ

Overview

The AD8554ARUZ is a quad zero-drift operational amplifier manufactured by Analog Devices Inc. It features rail-to-rail input and output capabilities, operating on a single supply voltage ranging from 2.7 V to 5 V. The device exhibits an ultralow offset voltage of 1 μV with a drift of 0.005 μV/°C. Key electrical parameters include a gain bandwidth product of 1.5 MHz at 5 V, a slew rate of 0.4 V/μs, and an input bias current of 50 pA. It provides high common-mode rejection and power supply rejection ratios exceeding 130 dB. The component is housed in a 14-lead TSSOP package and operates within a temperature range of −40°C to +125°C.

Feature Summary

• Zero-drift architecture utilizing auto-zero stabilization for minimal offset voltage and drift over temperature.
• Rail-to-rail input and output swing capability enabling full signal utilization across the supply range.
• Ultralow input bias current ensuring high impedance sensing accuracy without external compensation components.

Applications

• Temperature sensors
• Pressure sensors
• Precision current sensing
• Strain gage amplifiers
• Medical instrumentation

Procurement Notes

Verify the specific ordering suffix ARUZ corresponds to the 14-lead TSSOP package configuration. Confirm that the revision level matches the required datasheet specifications for your design. Ensure compatibility with the intended single-supply voltage range between 2.7 V and 5 V. Check for any specific handling requirements related to the CMOS input structure and electrostatic discharge sensitivity during assembly.

Selection Notes

Select this component when sub-microvolt offset stability is critical in single-supply environments. The quad configuration allows multiple channels in a compact footprint. Consider the 1.5 MHz bandwidth and 0.4 V/μs slew rate for moderate-speed precision applications. Verify that the load requirements do not exceed the specified short-circuit protection limits or degrade the rail-to-rail performance significantly.

Part Context

This part belongs to the AD8551/AD8552/AD8554 family of zero-drift amplifiers. The AD8554 specifically integrates four independent amplifier channels. It shares architectural similarities with the AD8551 (single) and AD8552 (dual) variants but offers higher channel density. The technology combines low cost with high accuracy typically found in expensive chopper-stabilized amplifiers.

Replacement Considerations

Direct functional substitutes within the same package include the AD8554ARZ (SOIC-14). For different package requirements, consider the AD8554ARMZ (MSOP-16 is not applicable, check AD8551/2/4 RM/R suffixes for single/dual equivalents). Verify pinout compatibility before substitution.

FAQ

Does the AD8554 require external capacitors for stability?

No external capacitors are required for basic operation as the internal auto-zero circuitry handles offset correction.

What is the maximum overload recovery time?

The typical overload recovery time is 50 μs.