ADA4505-1ARJZ-RL

Overview

The ADA4505-1ARJZ-RL is a single-channel micropower operational amplifier from Analog Devices, housed in a 5-lead SOT-23 package. 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 features rail-to-rail input and output swings, a gain-bandwidth product of 50 kHz, and a slew rate of 6 mV/μs.

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 ensuring full common-mode dynamic range without signal degradation.
• Ultra-low power consumption with a maximum supply current of 10 μA per amplifier for extended battery life.
• High precision performance characterized by low offset voltage drift and high common-mode rejection ratio.

Applications

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

Procurement Notes

Verify the specific ordering suffix RL against the manufacturer's official documentation to confirm tape-and-reel packaging specifications. Ensure the component meets all required environmental standards and temperature ranges specified in the datasheet before finalizing procurement plans.

Selection Notes

Select this component for applications requiring high precision in low-voltage environments where minimizing power consumption is critical. The zero crossover distortion feature makes it suitable for maintaining accuracy across the entire input common-mode voltage range.

Part Context

This part belongs to the ADA4505-x family of micropower amplifiers, which includes single, dual, and quad configurations. The series is designed to address challenges in battery-powered devices by offering high PSRR and CMRR while operating at very low supply currents.

Replacement Considerations

Check for availability of other variants within the ADA4505 family, such as the ADA4505-2 or ADA4505-4, if multiple channels are needed. Verify pin compatibility and electrical characteristics against alternative single-channel micropower op-amps if sourcing issues arise.

FAQ

How does the ADA4505-1 eliminate crossover distortion?

It uses an on-chip charge pump to power the input differential pair, allowing the input stage to handle signals from one supply extreme to the other without switching between differential pairs.

What is the typical input bias current for this amplifier?

The typical input bias current is 0.5 pA, which remains extremely low across the operating temperature range.