ADA4505-1ARJZ-R7

Overview

The ADA4505-1ARJZ-R7 is a single-channel micropower operational amplifier from Analog Devices, featuring rail-to-rail input and output swings. It operates on a single supply of 1.8 V to 5 V or dual supplies of ±0.9 V to ±2.5 V. Key electrical parameters include a maximum offset voltage of 3 mV, typical input bias current of 0.5 pA, and supply current of 10 μA per amplifier. The device offers a gain-bandwidth product of 50 kHz, slew rate of 6 mV/µs, and PSRR of 100 dB minimum. It is housed in a 5-lead SOT-23 package.

Feature Summary

• Zero input crossover distortion achieved through an internal charge pump technology that powers the input differential pair.
• Rail-to-rail input and output capability ensures full common-mode dynamic range without signal degradation near supply rails.
• Ultra-low power consumption with supply current under 10 μA per amplifier, optimizing battery life in portable devices.
• High precision performance characterized by low offset voltage drift and minimal input bias current.

Applications

• Pressure and position sensors
• Remote security systems
• Medical monitors
• Battery-powered consumer equipment
• Hazard detectors

Procurement Notes

Verify the specific ordering suffix ARJZ corresponds to the 5-lead SOT-23 package configuration required for your design. Confirm the R7 suffix indicates reel packaging if automated assembly is planned. Ensure the component meets RoHS compliance standards applicable to your region. Cross-reference the manufacturer part number with official distributor catalogs to validate authenticity and revision status before finalizing procurement.

Selection Notes

Select this amplifier when designing low-voltage, battery-operated circuits requiring high precision without the complexity of external voltage regulators. It is suitable for applications demanding rail-to-rail signal handling with minimal power draw. Consider the 50 kHz bandwidth and 6 mV/µs slew rate for slow-moving sensor signals. Verify thermal constraints for the SOT-23 package in enclosed environments.

Part Context

This component belongs to the ADA4505-x family of zero crossover amplifiers, which includes dual (ADA4505-2) and quad (ADA4505-4) variants. The family shares core technologies like the charge pump input stage and micropower architecture. It complements other Analog Devices precision amplifiers designed for low-voltage industrial and medical applications.

Replacement Considerations

Public confirmed substitute part numbers: AD8505ARJZ-R7.