**ADP7118WAUJZ-0-R7: A 0V, 200mA Low-Noise LDO Linear Regulator for Precision Analog Applications**

In the realm of precision analog design, power integrity is paramount. Noise, ripple, and power supply-induced artifacts can severely degrade the performance of sensitive circuits such as high-resolution ADCs, DACs, precision sensors, and RF transceivers. To address these critical challenges, the **ADP7118WAUJZ-0-R7** emerges as a superior solution, a low-dropout (LDO) linear regulator engineered specifically to provide the clean, stable, and quiet power these applications demand.

This device is a member of Analog Devices' acclaimed high-performance LDO family. Its defining characteristic is its **ultra-low output noise performance of just 0.8μV rms** (typical, 10Hz to 100kHz). This exceptionally low noise floor ensures that the regulator itself does not contribute significant interference, preserving the signal integrity and dynamic range of the downstream analog components. Furthermore, it boasts an outstanding **power supply rejection ratio (PSRR) of 72dB at 10kHz**, effectively attenuating ripple and noise originating from the upstream switching regulator or power source before it can reach the load.

The **ADP7118WAUJZ-0-R7** is specified for a fixed **0V output voltage**, delivering up to **200mA of continuous output current**. This specific voltage variant is particularly valuable for biasing circuits that require a clean, quiet ground reference or for generating precision negative supplies when used in conjunction with a reference. The device operates with a very low dropout voltage of 185mV at 200mA load, enhancing its efficiency and allowing it to remain in regulation even as input voltage approaches the output level.

Housed in a compact, 5-lead TSOT package, this LDO is designed for space-constrained applications. It incorporates essential protection features like current limiting and thermal shutdown, safeguarding both the regulator and the system under fault conditions. Its wide input voltage range of 2.7V to 20V offers significant design flexibility, making it suitable for a broad array of industrial, instrumentation, healthcare, and communications platforms.

**ICGOODFIND**: The ADP7118WAUJZ-0-R7 stands out as an exceptional choice for designers who cannot compromise on power quality. Its combination of **ultra-low noise, high PSRR, and 200mA output current** in a small form factor makes it an indispensable component for powering the most sensitive and demanding analog circuitry, ensuring optimal system performance and accuracy.

**Keywords**: Low-Noise LDO, Precision Analog, High PSRR, 200mA Regulator, Ultra-Low Noise.