ADM7150ACPZ-4.5-R7 datasheet(1/24 Pages) AD

部件名	ADM7150ACPZ-4.5-R7

功能描述	800 mA Ultralow Noise, High PSRR, RF Linear Regulator

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制造商	AD [Analog Devices]

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800 mA Ultralow Noise,

High PSRR, RF Linear Regulator

Data Sheet

ADM7150

FEATURES

Input voltage range: 4.5 V to 16 V

Maximum output current: 800 mA

Low noise

1.0 µV rms total integrated noise from 100 Hz to 100 kHz

1.6 µV rms total integrated noise from 10 Hz to 100 kHz

Noise spectral density: 1.7 nV√Hz typical from 10 kHz to 1 MHz

Power supply rejection ratio (PSRR) at 400 mA load

>90 dB from 1 kHz to 100 kHz, VOUT = 5 V

>60 dB at 1 MHz, VOUT = 5 V

Dropout voltage: 0.6 V at VOUT = 5 V, 800 mA load

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

TYPICAL APPLICATION CIRCUIT

VOUT

REF

REF_SENSE

GND

VIN

EN

BYP

VREG

ADM7150

CREG

10µF

CBYP

1µF

CREF

1µF

CIN

10µF

COUT

10µF

OFF

ON

VIN = 6.2V

VOUT = 5.0V

Figure 1. 5 V Output Circuit

GENERAL DESCRIPTION

The ADM7150 is a low dropout (LDO) linear regulator that

operates from 4.5 V to 16 V and provides up to 800 mA of

output current. Using an advanced proprietary architecture, it

provides high power supply rejection (>90 dB

from 1 kHz to 1 MHz),

ultralow output noise (<1.7 nV√Hz), and

achieves excellent line and

load transient response with a 10 µF ceramic output capacitor.

The ADM7150 is available in 1.8 V, 2.8 V, 3.0 V, 3.3 V, 4.5 V,

4.8 V, and 5.0 V fixed outputs. In addition, 16 fixed output

voltages between 1.5 V and 5.0 V are available upon request.

The ADM7150 regulator typical output noise is 1.0 µV rms

from 100 Hz to 100 kHz for fixed output voltage options, and

the noise spectral density is 1.7 nV/√Hz from 10 kHz to 1 MHz.

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

but also providing excellent thermal performance for applications

requiring up to 800 mA of output current in a small, low profile

footprint. See the ADM7151 adjustable LDO to generate additional

output voltages.

100k

1

10

100

1k

10k

0.1

1

10

100

1k

10k

100k

1M

FREQUENCY (Hz)

CBYP = 1µF

CBYP = 10µF

CBYP = 100µF

CBYP = 1mF

Figure 2. Noise Spectral Density (NSD) vs. Frequency for Various CBYP

Rev. 0

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