ADP7142ACPZN2.5-R7

Overview

The ADP7142ACPZN2.5-R7 is a CMOS low dropout linear regulator manufactured by Analog Devices Inc. It operates from an input voltage range of 2.7 V to 40 V and provides up to 200 mA of output current. This specific variant features a fixed 2.5 V output with an initial accuracy of ±0.8%. The device delivers ultralow noise of 11 µV rms and high power supply rejection ratios, including 88 dB at 10 kHz. It utilizes a 6-lead LFCSP package (2 mm × 2 mm) and supports user-programmable soft start functionality.

Feature Summary

• Ultralow output noise of 11 µV rms independent of the fixed output voltage
• High power supply rejection ratio reaching 88 dB at 10 kHz
• User-programmable precision enable pin with adjustable thresholds
• Capable of operating stably with small 2.2 µF ceramic output capacitors

Applications

• Regulation for noise-sensitive analog and mixed-signal circuits
• Powering ADC, DAC circuits, and precision amplifiers
• Providing power for VCO VTUNE control in communications equipment
• Medical and healthcare instrumentation systems

Procurement Notes

Verify that the ordering suffix matches the required package type and output voltage configuration. Confirm RoHS compliance status and automotive qualification requirements if applicable. Ensure the supplier provides valid traceability documentation for the component batch. Cross-reference the manufacturer part number against official distributor catalogs to validate authenticity before finalizing procurement orders.

Selection Notes

Select this regulator when high input voltages up to 40 V must be stepped down to precise low-voltage rails. The fixed 2.5 V option eliminates external feedback resistors while maintaining high accuracy. Consider the LFCSP package for applications requiring compact footprints and efficient thermal dissipation. Verify that the load current does not exceed the 200 mA maximum rating under all operating conditions.

Part Context

This component belongs to the ADP7142 series of low noise CMOS LDO regulators designed for high-performance analog applications. The series offers various fixed output voltages and adjustable configurations across multiple package options. The ACPZN suffix indicates the specific 6-lead LFCSP packaging format used for surface-mount assembly.

Replacement Considerations

Consult official Analog Devices documentation for verified substitute part numbers within the same product family.