AD8554ARZ

Overview

The AD8554ARZ is a quad precision operational amplifier from Analog Devices, featuring rail-to-rail input and output capabilities. It operates on a single supply voltage ranging from 2.7 V to 5 V. Key electrical specifications include a maximum offset voltage of 1 μV at 25°C and 10 μV across the temperature range, with an input offset drift of 0.005 μV/°C. The device offers a gain bandwidth product of 1.5 MHz and a slew rate of 400 mV/μs. Input bias current is typically 50 pA, while supply current per amplifier is approximately 975 μA. Common-mode rejection ratio (CMRR) and power supply rejection ratio (PSRR) reach up to 140 dB and 130 dB respectively.

Feature Summary

• Utilizes auto-zero stabilization architecture to achieve ultralow offset voltage and drift over the operating temperature range.
• Provides full rail-to-rail input and output swing capability for both high-side and low-side sensing applications.
• Features high common-mode rejection ratio and power supply rejection ratio exceeding 130 dB.
• Requires no external capacitors for stability or operation.

Applications

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

Procurement Notes

Verify the specific package type and suffix against the manufacturer's ordering guide to ensure compatibility with the required PCB footprint. Confirm that the component meets all relevant environmental and safety standards applicable to the target deployment region before finalizing procurement decisions.

Selection Notes

Select this component when sub-microvolt offset and minimal drift are critical requirements in single-supply environments. The quad configuration allows multiple channels within a single package, reducing board space. Ensure the application load does not exceed the specified output current limits to maintain rail-to-rail performance integrity.

Part Context

This part belongs to the AD8551/AD8552/AD8554 family of zero-drift, single-supply, rail-to-rail input/output operational amplifiers. The AD8554 specifically provides four independent amplifier channels. The 'R' suffix indicates a narrow SOIC package, and 'Z' denotes lead-free compliance.

Replacement Considerations

Direct substitutes within the same family include the AD8551 (single channel) and AD8552 (dual channel). Verify pinout compatibility if replacing with other quad op-amps, as package variations exist within the series.

FAQ

Does the AD8554 require external compensation capacitors?

No, the AD8554 does not require external capacitors for stability or operation due to its internal auto-zero architecture.

What is the input offset voltage drift specification?

The input offset voltage drift is specified as 0.005 μV/°C over the temperature range of −40°C to +125°C.