ADP7183ACPZN-R7

Overview

The ADP7183ACPZN-R7 is a negative-output, low dropout linear regulator from Analog Devices. It operates within an input voltage range of −2.0 V to −5.5 V and delivers up to −300 mA of output current. The device provides ultralow noise performance with 4 μV rms integrated noise (100 Hz to 100 kHz) and high power supply rejection ratio (PSRR). It features adjustable or fixed output voltages ranging from −0.5 V to −4.5 V, housed in an 8-lead, 2 mm × 2 mm LFCSP package.

Feature Summary

• Ultralow noise architecture providing 4 μV rms output noise independent of the selected output voltage level.
• High power supply rejection ratio (PSRR) maintaining effective filtering across wide frequency ranges under varying load conditions.
• Flexible enable logic capable of interfacing with both positive and negative control signal levels for system integration.
• Stable operation utilizing small ceramic capacitors, requiring only a 4.7 μF input and output capacitance.

Applications

• Power regulation for analog-to-digital converters (ADCs)
• Power regulation for digital-to-analog converters (DACs)
• Supply conditioning for precision amplifiers
• Noise-sensitive communications and infrastructure equipment

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm the exact output voltage configuration, as the base part number covers multiple fixed and adjustable variants. Ensure compatibility with the required thermal management strategy given the compact LFCSP package dimensions and maximum current ratings.

Selection Notes

Select this component when designing circuits that require negative voltage rails with strict noise constraints. Evaluate the required output voltage against available fixed options or calculate external feedback resistors for adjustable versions. Confirm that the application's input voltage remains within the specified operational limits to ensure proper regulation and transient response.

Part Context

This device belongs to the ADP7183 series of low dropout regulators designed for high-performance mixed-signal applications. It utilizes a complementary metal oxide semiconductor process to achieve low quiescent current and excellent thermal efficiency within a small footprint suitable for space-constrained portable and industrial designs.

Replacement Considerations

Consult the manufacturer's official cross-reference documentation for verified substitute part numbers. Do not assume functional equivalence based solely on pinout or voltage specifications without verifying internal architecture and electrical characteristics.