ADP7157ACPZ-03-R7

Overview

The ADP7157ACPZ-03-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 1.2 A of output current. It features ultralow noise characteristics, with typical output noise of 0.9 µV rms from 100 Hz to 100 kHz and 1.6 µV rms from 10 Hz to 100 kHz. The device provides high power supply rejection ratio (PSRR), achieving 75 dB from 1 kHz to 100 kHz and 55 dB at 1 MHz for the -03 model. It maintains stability using only a 10 µF ceramic output capacitor and offers precise enable functionality with a shutdown current as low as 0.2 µA.

Feature Summary

• Ultralow noise performance optimized for sensitive RF applications
• High power supply rejection ratio across wide frequency ranges
• Stable operation with minimal external 10 µF ceramic capacitors
• Precision programmable enable pin with ultra-low shutdown current

Applications

• Phase-locked loops (PLLs)
• Voltage controlled oscillators (VCOs)
• Backhaul and microwave links

Procurement Notes

Verify component authenticity through authorized channels. Confirm package integrity upon receipt. Ensure proper ESD handling procedures are followed during storage and assembly. Cross-reference datasheet revisions for updated specifications.

Selection Notes

Select this variant when specific input-to-output voltage differentials require optimized PSRR performance. Consider thermal dissipation requirements based on load current and ambient temperature conditions. Evaluate PCB layout constraints for the LFCSP package footprint.

Part Context

Part of the ADP7157 family of ultralow noise RF linear regulators. Designed to complement other power management solutions in communication infrastructure systems requiring clean power delivery.

Replacement Considerations

ADP7157ACPZ-04-R7: Higher PSRR at 3.8 V input. ADP7157ACPZ-01-R7: Optimized for lower input voltages. ADP7157ACPZ-02-R7: Balanced performance for mid-range inputs.