ADP7157ACPZ-01-R2

Overview

The ADP7157ACPZ-01-R2 is an ultra-low noise, high PSRR RF linear regulator manufactured by Analog Devices. It features a 1.2 A output current capability with an adjustable output voltage range of 1.2 V to 1.8 V. The device operates from an input voltage between 2.3 V and 5.5 V, delivering a typical dropout voltage of 120 mV. It exhibits a typical power supply rejection ratio (PSRR) of 52 dB and maintains line regulation at 0.1 %/V and load regulation at 0.3 %/A. Quiescent current is 7 mA, with operation supported across a temperature range of -40 °C to +125 °C in an LFCSP-10 package.

Feature Summary

• Ultra-low noise performance optimized for sensitive RF applications
• High power supply rejection ratio (PSRR) for clean power delivery
• Adjustable output voltage configuration within specified limits
• Low dropout voltage enabling efficient operation near input levels

Applications

• RF front-end modules requiring low-noise power supplies
• Wireless communication systems
• Sensitive analog signal processing circuits

Procurement Notes

Verify component authenticity through authorized channels due to potential counterfeits. Confirm RoHS compliance status via official documentation. Check for moisture sensitivity level requirements during storage and handling. Ensure the specific suffix matches design specifications as variants exist within the family. Validate lead times and availability directly with manufacturers or certified distributors.

Selection Notes

Select this component when ultra-low noise and high PSRR are critical for RF circuit stability. The adjustable output allows customization within the 1.2 V to 1.8 V range. Consider the 1.2 A current capacity for moderate load requirements. Evaluate thermal management needs given the operating temperature range and package type. Compare against fixed-output alternatives if voltage flexibility is not required.

Part Context

Part of the ADP7157 series of high PSRR RF linear regulators. Designed for applications demanding superior noise performance and ripple rejection. Manufactured by Analog Devices Inc. using advanced semiconductor processes. Available in surface-mount packages suitable for automated assembly.

Replacement Considerations

ADP7157ACPZ-01-R7 shares identical electrical characteristics and pinout but differs in packaging format. Verify compatibility with existing PCB footprints and reflow profiles before substitution.