ADA4505-1ARJZ

Overview

The ADA4505-1ARJZ is a single-channel micropower operational amplifier manufactured by UMW. It features rail-to-rail input and output swings, operating from a single 1.8 V to 5 V supply or dual ±0.9 V to ±2.5 V supplies. Key electrical specifications include a maximum offset voltage of 3 mV, typical input bias current of 0.5 pA, and supply current under 10 μA per amplifier. The device offers a gain-bandwidth product of 50 kHz, slew rate of 6 mV/µs, and CMRR of 105 dB. It is housed in a SOT-23-5 package.

Feature Summary

• Zero input crossover distortion technology for excellent PSRR and CMRR performance
• Rail-to-rail input and output capability across the full supply range
• Very low input bias current with high input resistance
• Micropower operation suitable for battery-powered applications

Applications

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

Procurement Notes

Verify that the component matches the UMW manufacturer marking 'A2D' on the SOT-23-5 package. Confirm the part number suffix ARJZ corresponds to the tape and reel delivery mode specified in the ordering information. Ensure the device meets the required industrial temperature range specifications for the intended application environment.

Selection Notes

Select this amplifier for designs requiring ultra-low power consumption combined with precision signal conditioning. The zero crossover distortion feature minimizes errors caused by power supply variations over the battery lifetime. Consider the 50 kHz bandwidth and 6 mV/µs slew rate for slow-moving sensor signals rather than high-speed data acquisition tasks.

Part Context

This component belongs to the ADA4505-x family of amplifiers, which includes single, dual, and quad channel variants. The family shares common circuit technology designed for low-cost, high-performance applications in portable electronics. The ADA4505-1 specifically provides a single amplifier channel in a compact surface-mount package.

Replacement Considerations

Check for direct pin-compatible alternatives within the same UMW ADA4505 series, such as the quad version ADA4505-4, if multiple channels are needed. Verify that any substitute maintains the specific SOT-23-5 footprint and electrical characteristics like the 0.5 pA typical bias current.