Overview
The ADM7150ARDZ-2.8, produced by Analog Devices Inc., is a low dropout (LDO) linear regulator designed to operate from an input voltage range of 4.5 V to 16 V. This regulator provides up to 800 mA of output current and is known for its ultralow noise and high power supply rejection ratio (PSRR). The ADM7150 uses an advanced proprietary architecture to achieve excellent line and load transient response, making it suitable for noise-sensitive applications.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Input Voltage Range | VIN | 4.5 | 16 | V | |
| Output Voltage | VOUT | 2.8 | V | ||
| Maximum Output Current | IOUT | 800 | mA | ||
| Output Noise (10 Hz to 100 kHz) | OUTNOISE | 1.6 | µV rms | ||
| Output Noise (100 Hz to 100 kHz) | OUTNOISE | 1.0 | µV rms | ||
| Noise Spectral Density (10 kHz to 1 MHz) | NSD | 1.7 | nV/√Hz | ||
| Power Supply Rejection Ratio (PSRR) at 400 mA load | PSRR | >90 dB (1 kHz to 100 kHz) | >60 dB (1 MHz) | dB | |
| Dropout Voltage at VOUT = 5 V, 800 mA load | VDO | 0.6 | V | ||
| Initial Voltage Accuracy | ±1% | % | |||
| Voltage Accuracy over Line, Load and Temperature | ±2% | % | |||
| Quiescent Current (IGND) at no load | IGND | 4.3 | 7.0 | mA | |
| Shutdown Current | IIN-SD | 0.1 | 3 | µA | |
| Package Type | 8-lead LFCSP, 8-lead SOIC |
Key Features
- Ultralow output noise: 1.0 µV rms from 100 Hz to 100 kHz and 1.6 µV rms from 10 Hz to 100 kHz.
- High power supply rejection ratio (PSRR): >90 dB from 1 kHz to 100 kHz and >60 dB at 1 MHz.
- Low dropout voltage: 0.6 V at VOUT = 5 V, 800 mA load.
- High accuracy: Initial voltage accuracy ±1% and voltage accuracy over line, load, and temperature ±2%.
- Low quiescent current: 4.3 mA at no load and low shutdown current of 0.1 µA.
- Compact packaging: Available in 8-lead, 3 mm × 3 mm LFCSP and 8-lead SOIC packages.
- Stable with a 10 µF ceramic output capacitor.
Applications
- Noise-sensitive applications such as RF mixers, phase-locked loops (PLLs), voltage-controlled oscillators (VCOs), and PLLs with integrated VCOs.
- Communications and infrastructure, including cable digital-to-analog converter (DAC) drivers and backhaul and microwave links.
Q & A
- What is the input voltage range of the ADM7150ARDZ-2.8? The input voltage range is from 4.5 V to 16 V.
- What is the maximum output current of the ADM7150ARDZ-2.8? The maximum output current is up to 800 mA.
- What is the output voltage of the ADM7150ARDZ-2.8 model? The output voltage is fixed at 2.8 V.
- What are the key noise specifications of the ADM7150ARDZ-2.8? The output noise is 1.0 µV rms from 100 Hz to 100 kHz and 1.6 µV rms from 10 Hz to 100 kHz, with a noise spectral density of 1.7 nV/√Hz from 10 kHz to 1 MHz.
- What is the power supply rejection ratio (PSRR) of the ADM7150ARDZ-2.8? The PSRR is >90 dB from 1 kHz to 100 kHz and >60 dB at 1 MHz.
- What are the available package types for the ADM7150ARDZ-2.8? The regulator is available in 8-lead LFCSP and 8-lead SOIC packages.
- What is the dropout voltage of the ADM7150ARDZ-2.8 at 800 mA load? The dropout voltage is 0.6 V at VOUT = 5 V, 800 mA load.
- What is the quiescent current of the ADM7150ARDZ-2.8 at no load? The quiescent current is 4.3 mA at no load.
- What are some typical applications of the ADM7150ARDZ-2.8? Typical applications include noise-sensitive RF circuits, communications infrastructure, and cable DAC drivers.
- How stable is the ADM7150ARDZ-2.8 with output capacitors? The regulator is stable with a 10 µF ceramic output capacitor.
