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ADM7151ARDZ-02

更新时间： 2024-11-30 15:27:43
品牌 Logo 应用领域
亚德诺 - ADI 光电二极管输出元件调节器
页数 文件大小 规格书
25页 1178K
描述
800 mA Ultralow Noise, High PSRR, RF Linear Regulator

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800 mA Ultralow Noise,  
High PSRR, RF Linear Regulator  
ADM7151  
Data Sheet  
FEATURES  
TYPICAL APPLICATION CIRCUIT  
ADM7151-04  
Input voltage range: 4.5 V to 16 V  
Maximum output current: 800 mA  
Adjustable output from 1.5 V to 5.1 V  
Low noise  
V
= 6.2V  
V
= 5.0V  
IN  
OUT  
VIN  
VOUT  
REF  
C
10µF  
C
OUT  
10µF  
IN  
ON  
EN  
C
1µF  
REF  
OFF  
V
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 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  
BYP  
BYP  
C
BYP  
1µF  
R1  
V
= 1.5V × (R1 + R2)/R2  
OUT  
REF_SENSE  
GND  
R2  
1kΩ < R2 < 200kΩ  
V
REG  
VREG  
C
REG  
10µF  
Dropout voltage: 0.6 V at VOUT = 5 V, 800 mA load  
Initial voltage accuracy: 1ꢀ  
Figure 1. ADM7151-04 with VOUT = 5 V  
Voltage accuracy over line, load and temperature: 2ꢀ  
Quiescent current (IGND): 4.3 mA at no load  
Low shutdown current: 0.1 μA  
Stable with a 10 μF ceramic output capacitor  
8-lead LFCSP package and 8-lead SOIC package  
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  
but also providing excellent thermal performance for applications  
requiring up to 800 mA of output current in a small, low profile  
footprint.  
GENERAL DESCRIPTION  
The ADM7151 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 noise (1.7 nV√Hz from 10 kHz to 1 MHz), and excellent  
line and load transient response with a 10 μF ceramic output  
capacitor. The output voltage can be set to any voltage between  
1.5 V and 5.1 V with two resistors.  
100k  
C
C
C
C
= 1µF  
BYP  
BYP  
BYP  
BYP  
= 10µF  
= 100µF  
= 1mF  
10k  
1k  
The ADM7151 is available in two models that optimize power  
dissipation and PSRR performance as a function of input and  
output voltage. See Table 6 and Table 7 for selection guides.  
100  
10  
The ADM7151 regulator output noise is 1.0 μV rms from  
100 Hz to 100 kHz, and the noise spectral density is 1.7 nV/√Hz  
from 10 kHz to 1 MHz.  
1
0.1  
1
10  
100  
1k  
10k  
100k  
1M  
FREQUENCY (Hz)  
The ADM7151 is available in 8-lead, 3 mm × 3 mm LFCSP and  
8-lead SOIC packages, making it not only a very compact solution,  
Figure 2. Noise Spectral Density (NSD) vs. Frequency for Various CBYP  
Rev. A  
Document Feedback  
Information furnished by Analog Devices is believed to be accurate and reliable. However, no  
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other  
rights of third parties that may result from its use. Specifications subject to change without notice. No  
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.  
Trademarks and registeredtrademarks arethe property of their respective owners.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700 ©2013–2015 Analog Devices, Inc. All rights reserved.  
Technical Support  
www.analog.com  
 
 
 
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