ADM7150ARDZ-5.0

Overview

The ADM7150ARDZ-5.0 is an ultralow noise, high PSRR RF linear regulator manufactured by Analog Devices Inc. It operates from a 4.5 V to 16 V input range and provides up to 800 mA of output current with a fixed 5.0 V output. The device features a typical quiescent current of 4.3 mA at no load and a shutdown current of 0.1 µA. Initial voltage accuracy is ±1%, expanding to ±2% over line, load, and temperature conditions. Dropout voltage is specified at 0.6 V under an 800 mA load. It utilizes an 8-lead SOIC package.

Feature Summary

• Ultralow output noise performance with spectral density of 1.7 nV/√Hz
• High power supply rejection ratio exceeding 90 dB across wide frequency ranges
• Optimized for stability using standard 10 µF ceramic output capacitors
• Integrated enable pin supporting automatic startup when tied to the input supply

Applications

• RF mixers and phase-locked loops (PLLs)
• Voltage-controlled oscillators (VCOs) and integrated PLLs
• Cable digital-to-analog converter (DAC) drivers
• Backhaul and microwave links in communications infrastructure

Procurement Notes

Verify the specific suffix 'ARDZ' corresponds to the required 8-lead SOIC package and industrial temperature rating during procurement. Confirm that the ordering code matches the exact 5.0 V fixed output variant. Ensure compatibility with the manufacturer's RoHS compliance standards before finalizing component selection for production.

Selection Notes

Select this component for applications requiring strict noise suppression and high ripple rejection in RF environments. Ensure the input voltage remains within the 4.5 V to 16 V operational window. Verify that the PCB layout supports the thermal requirements of the 8-lead SOIC package to maintain junction temperatures within safe limits during maximum load operation.

Part Context

This part belongs to the ADM7150 series of low dropout linear regulators designed specifically for radio frequency applications. The series offers various fixed output voltages ranging from 1.5 V to 5.0 V. The ADM7150 architecture utilizes an internal active ripple filter to isolate the low-noise LDO from input supply noise, ensuring superior performance compared to single-stage designs.

Replacement Considerations

Consult the official datasheet for direct pin-compatible alternatives within the same family. Verify that any substitute maintains the required 800 mA output capability and ultralow noise specifications. Ensure the replacement device supports the necessary 8-lead SOIC package configuration.