ADP7183ACPZN2.0-R7

Overview

The ADP7183ACPZN2.0-R7 is a negative-output low dropout linear regulator from Analog Devices, operating within an input voltage range of −2.0 V to −5.5 V and delivering up to −300 mA of output current. It provides a fixed regulated output of −2.0 V with an initial accuracy of ±0.5% at −10 mA load. The device features ultralow noise performance, specified at 4 μV rms (100 Hz to 100 kHz), and high power supply rejection ratio reaching 75 dB typical at 10 kHz under full load. It operates reliably across a junction temperature range of −40°C to +125°C.

Feature Summary

• Ultralow noise architecture providing 4 μV rms integrated output noise independent of the output voltage setting
• High power supply rejection ratio ensuring effective filtering of input supply variations across wide frequency ranges
• Flexible enable logic compatible with both positive and negative control signal levels for system integration
• Integrated thermal overload protection and current-limit circuitry to safeguard against fault conditions

Applications

• Power regulation for analog-to-digital converters requiring clean supply rails
• Supply conditioning for precision amplifiers in measurement systems
• Power management for digital-to-analog converters in communication infrastructure
• Voltage regulation for medical and healthcare instrumentation equipment

Procurement Notes

Verify the specific ordering suffix matches the required package configuration and tape-and-reel specifications before finalizing procurement. Confirm that the fixed −2.0 V output variant aligns precisely with the target design requirements. Ensure compatibility with standard surface-mount assembly processes for the LFCSP-8 footprint. Cross-reference the manufacturer's latest documentation to validate any recent revisions or updates to the component specifications.

Selection Notes

Select this component when designing circuits that require stable negative voltage rails for sensitive analog front ends. The device is suitable for applications demanding minimal power supply noise without complex external filtering networks. Consider the thermal characteristics of the 8-lead LFCSP package when determining board layout constraints. Evaluate the startup time requirements relative to the selected feedback capacitor values to ensure proper system sequencing.

Part Context

This part belongs to the ADP7183 family of low dropout regulators designed for high-performance mixed-signal applications. The series offers various fixed output voltage options ranging from −0.5 V to −4.5 V alongside adjustable variants. All members share common architectural benefits including ultralow noise and high PSRR while differing primarily in their internal reference settings and output configurations.

Replacement Considerations

Direct replacements include other ADP7183ACPZN fixed voltage variants such as ADP7183ACPZN1.2-R7 or ADP7183ACPZN3.3-R7 if different voltage levels are acceptable. Verify pinout compatibility and thermal resistance parameters when substituting with similar negative LDO regulators from other manufacturers.