ADA4505-4ACBZ-R7

Overview

The ADA4505-4ACBZ-R7 is a quad micropower operational amplifier manufactured by Analog Devices Inc. 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. The device offers a maximum offset voltage of 3 mV, typical input bias current of 0.5 pA, and supply current of 7 µA per amplifier. It provides a gain-bandwidth product of 50 kHz and minimum PSRR of 100 dB. Packaged in a 14-ball WLCSP (CB-14-1), it operates within an extended industrial temperature range of -40°C to +125°C.

Feature Summary

• Zero input crossover distortion achieved via on-chip charge pump technology for full common-mode dynamic range
• Rail-to-rail input and output capability ensuring maximum signal swing at low supply voltages
• High power supply rejection ratio (PSRR) and common-mode rejection ratio (CMRR) to minimize errors during battery discharge

Applications

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

Procurement Notes

Verify the specific package type and suffix against the manufacturer's ordering guide to ensure compatibility with design requirements. Confirm that the component meets the required environmental specifications and temperature ranges for the intended application environment before finalizing procurement decisions.

Selection Notes

Select this component when designing low-voltage, battery-operated circuits requiring high precision without external regulation. The quad configuration allows multiple channels in a compact footprint. Ensure the load conditions and supply voltage align with the specified electrical characteristics to maintain optimal performance and stability.

Part Context

This part belongs to the ADA4505-x family of micropower amplifiers, which includes single (ADA4505-1) and dual (ADA4505-2) variants. The family shares core technologies such as zero crossover distortion and low bias current. The quad version integrates four independent amplifiers into a single package, suitable for multi-channel signal processing applications.

Replacement Considerations

Direct substitutes include other members of the ADA4505 family, such as the ADA4505-1 or ADA4505-2, depending on channel count requirements. Verify pinout compatibility and electrical specifications when considering alternative packages like TSSOP.