ADP7159ACPZ-03-R7

Overview

The ADP7159ACPZ-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 2 A 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 (PSRR). The device offers precise output voltage adjustment between 1.2 V and 3.3 V with ±0.6% initial accuracy. It includes a precision enable pin, low shutdown current, and thermal protection, housed in compact 10-lead LFCSP or 8-lead SOIC packages.

Feature Summary

• Ultralow noise architecture achieving 0.9 µV rms total integrated noise for sensitive RF applications
• High power supply rejection ratio (PSRR) maintaining stability across varying load and line conditions
• Precision enable function with defined logic thresholds and internal discharge resistors for rapid shutdown
• Optimized for use with small ceramic capacitors, ensuring excellent transient response and stability

Applications

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

Procurement Notes

Verify the specific suffix -03-R7 corresponds to the required output voltage range and package type against the manufacturer's ordering guide. Confirm that the LFCSP or SOIC variant matches your PCB footprint requirements. Ensure compatibility with the ADIsimPower design tool for final validation of component selection and thermal performance before procurement.

Selection Notes

Select this regulator for applications requiring high current capability combined with strict noise specifications. Evaluate the dropout voltage characteristics relative to your minimum input voltage to ensure regulation under all load conditions. Consider the thermal resistance of the chosen package when designing for maximum load currents to maintain junction temperature within safe operating limits.

Part Context

The ADP7159 belongs to a family of ultralow noise RF linear regulators designed for demanding analog and mixed-signal environments. It complements other devices like the ADP7157 and ADP7158, offering similar performance metrics but tailored for higher current outputs. The series utilizes advanced proprietary architecture to deliver superior PSRR and transient response compared to standard LDOs.

Replacement Considerations

Direct substitutes include the ADP7159ARDZ-03-R7 for alternative packaging options within the same electrical specification set. Cross-reference with the ADP7157 series if lower current requirements allow for potential cost or size optimization, noting the difference in maximum load current capabilities.