ADM7155ARDZ-01-R7

Overview

The ADM7155ARDZ-01-R7 is an adjustable linear regulator from Analog Devices, operating within a 2.3 V to 5.5 V input voltage range and delivering up to 600 mA of load current. It features ultralow noise performance with 0.9 μV rms integrated noise (100 Hz to 100 kHz) and high power supply rejection ratio exceeding 90 dB. The device provides an output voltage range of 1.2 V to 3.4 V with ±0.5% initial accuracy. It operates reliably over a temperature range of -40°C to +125°C and includes precision enable functionality.

Feature Summary

• Ultralow noise architecture utilizing advanced proprietary design for RF applications
• High power supply rejection ratio across wide frequency ranges
• Precision enable pin with defined logic thresholds
• Optimized for stability with small ceramic capacitors

Applications

• Phase-Locked Loops (PLLs)
• Voltage-Controlled Oscillators (VCOs)
• Communications infrastructure systems
• Backhaul and microwave links

Procurement Notes

Verify the specific suffix '01' corresponds to the required internal regulator voltage configuration for your input-output differential requirements. Confirm package availability in 8-lead LFCSP or SOIC formats. Ensure component authenticity through authorized distribution channels to guarantee adherence to specified electrical parameters and thermal characteristics.

Selection Notes

Select this model when low dropout voltage and minimal power dissipation are critical for the specific input-to-output voltage differential. Consider the 600 mA current capability alongside the thermal resistance of the chosen package. Evaluate the need for the precision enable feature versus automatic startup configurations based on system power sequencing requirements.

Part Context

This component belongs to the ADM7155 series of RF linear regulators designed for noise-sensitive environments. It shares architectural similarities with fixed-output variants but offers adjustable output flexibility. The series targets applications requiring clean power delivery in compact footprints, supporting both surface-mount technologies for automated assembly processes.

Replacement Considerations

Direct functional substitutes include other models within the ADM7155 family, such as the ADM7154 series for fixed outputs. Cross-referencing with the ADP7155 or ADP7156 series may be necessary if different current ratings or input voltage ranges are required, though pinouts and specifications should be verified against official datasheets.