**ADP1715ARMZ-5-R7: A 150mA, Low-Noise, High-PSRR CMOS Linear Regulator**

In the realm of power management for sensitive electronic systems, the performance of a voltage regulator is paramount. The **ADP1715ARMZ-5-R7** from Analog Devices stands out as a premier solution, engineered to deliver clean, stable power to noise-sensitive applications. As a **150mA low-dropout (LDO) linear regulator**, it is specifically designed to provide exceptional noise performance and high power supply rejection ratio (PSSRR), making it an ideal choice for powering analog sensors, RF transceivers, audio codecs, and high-precision data converters.

**Key Features and Performance Advantages**

The core strength of the ADP1715 lies in its advanced CMOS process technology. Unlike traditional bipolar LDOs, this CMOS-based regulator achieves an **ultra-low noise output of just 9μV rms** (10Hz to 100kHz) and an impressive **PSRR of 70dB at 10kHz**. This means it effectively filters out unwanted AC ripples and noise from the input power supply, such as those generated by switch-mode power supplies (SMPS), ensuring a pristine DC output. This capability is critical for maintaining the integrity of signals in communication and measurement systems.

Despite its compact footprint in the 8-lead MSOP package, the regulator is remarkably efficient. It operates with a **low dropout voltage of 110mV at 150mA load**, which maximizes efficiency and extends battery life in portable devices. The device features a fixed 5.0V output voltage (as denoted by the `-5` suffix) and requires only a small 1μF ceramic output capacitor for stability, simplifying board design and saving valuable space.

**Application Versatility and Robustness**

The ADP1715ARMZ-5-R7 is designed for robustness and reliability. It incorporates vital protection features, including **current limiting and thermal shutdown**, which safeguard both the regulator and the downstream load under fault conditions. Its wide input voltage range of 2.3V to 5.5V allows it to be powered from various sources, such as lithium-ion batteries or a regulated 3.3V/5V rail.

Its combination of low noise and high PSRR makes it exceptionally versatile. It is perfectly suited as a point-of-load (PoL) regulator for FPGAs, ASICs, and microcontrollers, or as a dedicated, clean supply for phase-locked loops (PLLs), voltage-controlled oscillators (VCOs), and other RF components where even minor power supply fluctuations can degrade performance.

**ICGOODFIND**

The ADP1715ARMZ-5-R7 is a superior CMOS linear regulator that sets a high benchmark for low-noise and high-PSRR performance. Its ability to deliver a clean, stable 5V output from a noisy input source makes it an indispensable component for designers tackling the challenges of modern, high-performance electronic systems.

**Keywords:**

1. **Low-Noise**

2. **High-PSRR**

3. **CMOS LDO Regulator**

4. **150mA**

5. **Thermal Shutdown**