**ADM7160AUJZ-8-R2: An Ultra-Low-Noise, High-PSRR 8V LDO Voltage Regulator**
In the realm of precision electronics, the stability and purity of a power supply are paramount. Noise, ripple, or fluctuations from the input can severely degrade the performance of sensitive components like RF transceivers, high-resolution ADCs, and precision sensors. Addressing this critical need, the **ADM7160AUJZ-8-R2** from Analog Devices stands out as a premier solution: **an ultra-low-noise, high-PSRR linear regulator** delivering a fixed, highly accurate 8.0V output.
At its core, the ADM7160 is a low-dropout (LDO) voltage regulator designed to provide a clean and stable voltage source from a higher input supply. The "AUJZ-8-R2" variant specifies the 8.0V output voltage in a compact, 5-lead TSOT package. Its most compelling features are its exceptionally low noise and its outstanding Power Supply Rejection Ratio (PSRR), which together ensure that the output voltage remains virtually impervious to disturbances on the input line.
**Ultra-Low Output Noise: A Benchmark for Precision**
The ADM7160 achieves a remarkably **low output noise of just 1.8μV RMS** (typical, 10Hz to 100kHz). This is an exceptionally quiet output, crucial for powering analog and RF circuits where any introduced noise can drown out weak signals or introduce errors in measurement. This performance is attained through innovative internal circuitry and design, effectively minimizing the inherent noise generated by the LDO itself.
**Exceptional Power Supply Rejection Ratio (PSRR)**
Equally important is the regulator's ability to reject noise coming from its input source, quantified by its PSRR. The ADM7160 excels here, offering **a high PSRR of 70dB at 10kHz**. This means it can effectively attenuate ripples and noise from switching converters or other noisy upstream power stages, preventing them from propagating to the sensitive load. This capability allows designers to use efficient but noisy switchers for preliminary regulation and then employ the ADM7160 as a "clean-up" LDO, combining the benefits of both efficiency and precision.
**Key Features and Specifications**
Beyond its noise performance, the ADM7160 is engineered for robustness and ease of use:
* **Output Voltage:** Fixed, highly accurate 8.0V.
* **Maximum Output Current:** 200mA, suitable for a wide range of low-power analog loads.
* **Low Dropout Voltage:** Typically 210mV at 200mA load, enabling operation with input voltages as low as 8.21V.
* **High Accuracy:** ±1.5% initial accuracy over line, load, and temperature.
* **Protection Features:** Includes internal current limit and thermal shutdown for safe operation under fault conditions.
* **Stable with Ceramic Capacitors:** Requires only a small 2.2μF ceramic output capacitor for stability, saving board space and cost.
**Applications**
The combination of ultra-low noise and high PSRR makes the ADM7160AUJZ-8-R2 ideal for a vast array of demanding applications, including:
* Powering **RF and Microwave Components** (PLLs, VCOs, LNAs, Mixers).
* **Precision Analog-to-Digital Converters (ADCs) and Digital-to-Analog Converters (DACs)**.
* **Medical and Healthcare Instrumentation**.
* **Test and Measurement Equipment**.
* **High-Fidelity Audio Systems**.
**ICGOODFIND**
The ADM7160AUJZ-8-R2 is a superior choice for designers who cannot compromise on power quality. Its industry-leading combination of **ultra-low noise and high PSRR** provides a pristine voltage rail, ensuring that the performance of the most sensitive circuits is never limited by their power supply. It represents a perfect blend of Analog Devices' analog expertise in a compact, easy-to-use package.
**Keywords:**
1. **Ultra-Low Noise**
2. **High PSRR**
3. **LDO Regulator**
4. **8V Output**
5. **Precision Analog**
