AD8552ARUZ

Overview

The AD8552ARUZ is a dual-channel, zero-drift operational amplifier manufactured by Analog Devices Inc. It features rail-to-rail input and output swings and operates on a single supply voltage ranging from 2.7 V to 5 V. The device utilizes an auto-zero stabilization topology to achieve ultralow offset voltage of 1 μV and input offset drift of 0.005 μV/°C. Key electrical characteristics include a gain bandwidth product of 1.5 MHz, high common-mode rejection ratio (CMRR) and power supply rejection ratio (PSRR) exceeding 130 dB, and low supply current consumption of approximately 850 μA per amplifier at 5 V. It is housed in an 8-lead TSSOP surface-mount package.

Feature Summary

• Zero-drift architecture utilizing auto-zero stabilization for minimal offset voltage and drift over temperature
• Rail-to-rail input and output capability enabling full signal swing across the supply range
• High precision performance with CMRR and PSRR exceeding 130 dB
• Ultralow input bias current ensuring minimal loading effects on high-impedance sources

Applications

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

Procurement Notes

Verify the specific ordering suffix RU corresponds to the 8-lead TSSOP package configuration required for your design. Confirm that the component meets the extended industrial temperature range specifications of -40°C to +125°C if operating in harsh environments. Ensure supply voltage constraints between 2.7 V and 5 V are strictly adhered to during system integration.

Selection Notes

Select this component when sub-microvolt offset stability is critical without requiring external compensation capacitors. The dual-channel configuration offers space efficiency compared to single-channel alternatives. Consider the 1.5 MHz bandwidth sufficient for low-frequency precision applications. Evaluate the 850 μA supply current against strict power budget requirements for battery-operated systems.

Part Context

This part belongs to the AD855x family of zero-drift, single-supply, rail-to-rail input/output operational amplifiers. The AD8552 specifically denotes the dual-channel variant within this series, alongside the single-channel AD8551 and quad-channel AD8554. All members share identical core amplifier architecture and electrical performance characteristics.

Replacement Considerations

Direct pin-compatible substitutes within the same family include the AD8551ARUZ (single channel) and AD8554ARUZ (quad channel). Verify package compatibility and ensure functional equivalence regarding zero-drift technology and rail-to-rail specifications before substitution.