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Analog Devices Inc. ADM7151 RF Linear Regulator

Analog Devices Inc. ADM7151 RF Linear Regulator is a low dropout (LDO) linear regulator that operates from 4.5V to 16V and provides up to 800mA of output current. Using an advanced proprietary architecture, it provides high power supply rejection (>90dB from 1kHz to 1MHz), ultra-low noise, and excellent line and load transient response with a 10μF ceramic output capacitor. The output voltage can be set to any voltage between 1.5V and 4.0V with two resistors. 

The ADM7151 regulator output noise is 1.0μV rms from 100Hz to 100kHz, and the noise spectral density is 1.7nV/√Hz from 10kHz to 1MHz. The ADM7151 is a very compact solution, and also provides excellent thermal performance for applications requiring up to 800 mA of output current in a small, low profile footprint.

Features

  • Input voltage range of 4.5V to 16V
  • Maximum output current of 800mA
  • Adjustable output from 1.5V to 4.0V
  • Low noise
    • 1.0μV rms total integrated noise from 100Hz to 100kHz
    • 1.6μV rms total integrated noise from 10Hz to 100kHz
  • Noise spectral density of 1.7nV√Hz from 10kHz to 1MHz
  • Power supply rejection ratio (PSRR) at 400mA load
    • >90dB from 1kHz to 100kHz, VOUT = 5V
    • >60dB at 1MHz, VOUT = 5V
  • Dropout voltage of 0.6V at VOUT = 5V, 800mA load
  • Initial voltage accuracy of ±1%
  • Voltage accuracy over line, load and temperature of ±2%
  • Quiescent current (IGND) of 4.3mA at no load
  • Low shutdown current of 0.1μA
  • Stable with a 10μF ceramic output capacitor

Applications

  • Regulated power noise sensitive applications
    • RF mixers, phase-locked loops (PLLs), voltage-controlled oscillators (VCOs), and PLLs with integrated VCOs
  • Clock distribution circuits
  • Ultrasound and other imaging applications
  • High speed RF transceivers
  • High speed, 16-bit or greater ADCs
  • Communications and infrastructure
  • Cable digital-to-analog converter (DAC) drivers

Videos

Typical Application Circuit

Application Circuit Diagram - Analog Devices Inc. ADM7151 RF Linear Regulator

Evaluation Board

Analog Devices ADM7151CP-04-EVALZ Evaluation Board demonstrates the functionality of the ADM7151 linear regulators. The board can provide simple device measurements, such as line and load regulation, dropout, and ground current with just a single voltage source, a voltmeter, an ammeter, and load resistors.
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Publicado: 2013-12-16 | Actualizado: 2022-03-11