Datasheet ADM7150 (Analog Devices)

800 mA Ultralow Noise, High PSRR, RF Linear Regulator Data Sheet ADM7150 FEATURES TYPICAL APPLICATION CIRCUIT Input voltage range: 4.5 V to 16 V ADM7150 Maximum output current: 800 mA VIN = 6.2V VOUT = 5.0V VIN VOUT Low noise CIN COUT 10µF 10µF 1.0 µV rms total integrated noise from 100 Hz to 100 kHz ON EN REF 1.6 µV rms total integrated noise from 10 Hz to 100 kHz CREF OFF BYP C 1µF Noise spectral density: 1.7 nV√Hz typical from 10 kHz to 1 MHz BYP REF_SENSE 1µF Power supply rejection ratio (PSRR) at 400 mA load VREG GND >90 dB from 1 kHz to 100 kHz, V C OUT = 5 V REG
001
10µF >60 dB at 1 MHz, V
1043-
OUT = 5 V
1
Dropout voltage: 0.6 V at VOUT = 5 V, 800 mA load
Figure 1. 5 V Output Circuit
Initial voltage accuracy: ±1% Voltage accuracy over line, load and temperature: ±2% Quiescent current (IGND): 4.3 mA at no load Low shutdown current: 0.1 µA Stable with a 10 µF ceramic output capacitor Fixed output voltage options: 1.8 V, 2.8 V, 3.0 V, 3.3 V, 4.5 V, 4.8 V, and 5.0 V (16 outputs between 1.5 V and 5.0 V are available) Exposed pad 8-lead LFCSP and 8-lead SOIC packages APPLICATIONS Regulated power noise sensitive applications RF mixers, phase-locked loops (PLLs), voltage-controlled oscillators (VCOs), and PLLs with integrated VCOs Communications and infrastructure Cable digital-to-analog converter (DAC) drivers Backhaul and microwave links GENERAL DESCRIPTION
The ADM7150 is a low dropout (LDO) linear regulator that footprint. See the ADM7151 adjustable LDO to generate additional operates from 4.5 V to 16 V and provides up to 800 mA of output voltages. output current. Using an advanced proprietary architecture, it
100k
provides high power supply rejection (>90 dB from 1 kHz to 1 MHz),
CBYP = 1µF CBYP = 10µF
ultralow output noise (<1.7 nV√Hz), and achieves excellent line and
z) CBYP = 100µF √H 10k C
load transient response with a 10 µF ceramic output capacitor.
V/ BYP = 1mF (n
The ADM7150 is available in 1.8 V, 2.8 V, 3.0 V, 3.3 V, 4.5 V,
TY SI
4.8 V, and 5.0 V fixed outputs. In addition, 16 fixed output
1k EN
voltages between 1.5 V and 5.0 V are available upon request.
L D A
The ADM7150 regulator typical output noise is 1.0 µV rms
TR 100
from 100 Hz to 100 kHz for fixed output voltage options, and
SPEC
the noise spectral density is 1.7 nV/√Hz from 10 kHz to 1 MHz.
ISE 10 O N
The ADM7150 is available in 8-lead, 3 mm × 3 mm LFCSP and 8-lead SOIC packages, making it not only a very compact solution
1 0.1 1 10 100 1k 10k 100k 1M
002 but also providing excellent thermal performance for applications
FREQUENCY (Hz)
1043- 1 requiring up to 800 mA of output current in a small, low profile Figure 2. Noise Spectral Density (NSD) vs. Frequency for Various CBYP
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Document Outline Features Applications General Description Typical Application Circuit Table of Contents Revision History Specifications Input and Output Capacitor Recommended Specifications Absolute Maximum Ratings Thermal Data Thermal Resistance ESD Caution Pin Configurations and Function Descriptions Typical Performance Characteristics Theory of Operation Applications Information Capacitor Selection Output Capacitor Input and VREG Capacitor REF Capacitor BYP Capacitor Capacitor Properties Enable (EN) and Undervoltage Lockout (UVLO) Start-Up Time REF, BYP, and, VREG pins Current-Limit and Thermal Overload Protection Thermal Considerations Thermal Characterization Parameter (ΨJB) Printed Circuit Board Layout Considerations Outline Dimensions Ordering Guide