**ADP7182AUJZ-0-R7: A High-Performance, Negative-Output LDO for Noise-Sensitive Applications**

In the realm of precision electronics, managing power integrity is paramount, especially for circuits that are extremely susceptible to noise, such as RF transceivers, high-resolution data converters, precision sensors, and medical imaging equipment. These applications demand not just clean power but stable negative voltage rails, a requirement that poses a significant design challenge. The **ADP7182AUJZ-0-R7** from Analog Devices emerges as a premier solution, engineered specifically to provide a high-performance, low-noise, negative-output voltage.

**Uncompromising Performance in Noise-Critical Environments**

The core strength of the ADP7182 lies in its exceptional ability to generate an ultra-clean, stable negative voltage from a negative input supply. It is designed to deliver a fixed -2.5 V output (with other voltages available in the series) at up to 200 mA of current. What sets it apart is its remarkably **low output noise of just 1.8 μV√Hz** and an outstanding **power supply rejection ratio (PSRR) of 70 dB at 10 kHz**. This high PSRR ensures that any ripple or noise present on the input supply is effectively blocked from reaching the sensitive load, making it an ideal choice for powering the most demanding analog components.

**Advanced Architecture for Superior Stability and Accuracy**

The ADP7182AUJZ-0-R7 leverages a proprietary architecture to achieve its high performance. It requires only small, space-saving ceramic output capacitors to maintain stability, simplifying board design and reducing the overall bill of materials. Its initial accuracy is excellent at ±0.8%, and it maintains a tight line and load regulation, ensuring the output voltage remains constant despite variations in input voltage or output current. The device is housed in a compact 5-lead TSOT package, making it suitable for densely populated PCBs in space-constrained applications.

**Key Features and Benefits:**

* **Ultra-Low Noise & High PSRR:** **Essential for preserving signal integrity** in RF, audio, and precision measurement systems.

* **High Output Current:** Capable of sourcing up to **200 mA**, sufficient for a wide range of analog and mixed-signal ICs.

* **Wide Input Voltage Range:** Operates from -2.5 V to -20 V, offering significant design flexibility.

* **Low Dropout Voltage:** Minimizes power loss and improves efficiency, even as the input voltage approaches the output level.

* **Compact Form Factor:** The TSOT package is ideal for modern, miniaturized electronic devices.

**ICGOODFIND:** The ADP7182AUJZ-0-R7 stands out as a top-tier negative-voltage LDO regulator. Its unparalleled combination of ultra-low noise, high PSRR, and robust output current delivery makes it an indispensable component for engineers designing next-generation, noise-sensitive applications. It effectively solves the critical challenge of generating clean negative power rails, thereby safeguarding the performance of the entire signal chain.

**Keywords:**

1. **Low-Dropout (LDO) Regulator**

2. **Negative Output Voltage**

3. **Ultra-Low Noise**

4. **Power Supply Rejection Ratio (PSRR)**

5. **Noise-Sensitive Applications**