ADP7142ACPZN3.3-R7

Overview

The ADP7142ACPZN3.3-R7 is a fixed-output low dropout linear regulator manufactured by Analog Devices Inc. It provides a stable 3.3 V output with a maximum current of 200 mA, operating from an input voltage range of 2.7 V to 40 V. The device features ultralow noise of 11 µV rms and high power supply rejection ratios of up to 88 dB at 10 kHz. It utilizes a 6-lead LFCSP package and includes precision enable functionality.

Feature Summary

• Ultralow output noise of 11 µV rms independent of the fixed output voltage setting
• High power supply rejection ratio reaching 88 dB at 10 kHz for effective ripple suppression
• Precision enable pin with programmable logic thresholds and built-in hysteresis
• Optimized stability with small 2.2 µF ceramic output capacitors

Applications

• Regulation for noise-sensitive analog circuits
• Powering ADC and DAC circuits
• Supplying precision amplifiers
• Providing control voltage for VCO VTUNE applications

Procurement Notes

Verify component authenticity through authorized distribution channels. Confirm that the specific ordering suffix matches the required package type and temperature rating. Ensure compliance with RoHS directives and automotive qualification standards if applicable to the target system environment.

Selection Notes

Select this regulator when high input voltages up to 40 V must be stepped down to a precise 3.3 V rail. It is suitable for portable equipment due to low quiescent current consumption. Verify that the application requires a fixed voltage rather than an adjustable configuration to utilize the optimized internal architecture.

Part Context

This component belongs to the ADP7142 family of CMOS LDO regulators designed for high-performance mixed-signal applications. The series supports various fixed output options and adjustable configurations within a compact footprint, catering to industrial, medical, and automotive electronics requiring clean power delivery.

Replacement Considerations

Direct substitutes include other ADI LDOs such as the ADP7118 or ADP7104 series. Verify that replacement parts match the 200 mA current capability and 40 V input voltage limits. Package compatibility and thermal resistance characteristics must also align with the existing PCB layout.