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ADM7155ACPZ-01-R7

更新时间： 2024-12-02 02:46:19
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亚德诺 - ADI /
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描述
600 mA, Ultralow Noise, High PSRR, RF Linear Regulator

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ADM7155ACPZ-01-R7 数据手册

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600 mA, Ultralow Noise,  
High PSRR, RF Linear Regulator  
ADM7155  
Data Sheet  
FEATURES  
TYPICAL APPLICATION CIRCUIT  
Input voltage range: 2.3 V to 5.5 V  
Output voltage range: 1.2 V to 3.4 V  
Maximum load current: 600 mA  
ADM7155  
V
= 3.5V  
V
= 3.0V  
IN  
OUT  
VIN  
VOUT  
C
C
OUT  
10µF  
IN  
10µF  
ON  
Low noise  
REF = 1.2V  
EN  
REF  
C
0.9 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: 1.5 nV/√Hz from 10 kHz to 1 MHz  
PSRR: >90 dB from 200 Hz to 200 kHz; 57 dB at 1 MHz  
Dropout voltage: 120 mV typical at VOUT = 3.3 V, IOUT = 600 mA  
Initial accuracy: 0.5ꢀ  
Accuracy over line, load, and temperature: −2.0ꢀ (minimum),  
+1.5ꢀ (maximum)  
Quiescent current, IGND = 4 mA at no load  
Low shutdown current: 0.2 ꢁA  
REF  
OFF  
1µF  
R1  
V
BYP  
BYP REF_SENSE  
V
= 1.2V × (R1 + R2)/R2  
OUT  
C
BYP  
1µF  
R2  
1kΩ < R2 < 200kΩ  
V
REG  
VREG  
GND  
C
10µF  
REG  
Figure 1. Regulated 3.0 V Output from 3.5 V Input  
10k  
NOISE FLOOR  
1.0µF  
3.3µF  
10µF  
Stable with a 10 μF ceramic output capacitor  
8-lead LFCSP and 8-lead SOIC packages  
Precision enable  
1k  
100  
10  
33µF  
100µF  
330µF  
1000µF  
Supported by ADIsimPower tool  
APPLICATIONS  
Regulation to noise sensitive applications: PLLs, VCOs, and  
PLLs with integrated VCOs  
Communications and infrastructure  
Backhaul and microwave links  
1
0.1  
0.1  
1
10  
100  
1k  
10k  
100k  
1M  
FREQUENCY (Hz)  
Figure 2. Noise Spectral Density for Different Values of CBYP  
GENERAL DESCRIPTION  
The ADM7155 is an adjustable linear regulator that operates  
from 2.3 V to 5.5 V and provides up to 600 mA of load current.  
Output voltages from 1.2 V to 3.4 V are possible depending on  
the model. Using an advanced proprietary architecture, it  
provides high power supply rejection and ultralow noise,  
achieving excellent line and load transient response with only a  
10 μF ceramic output capacitor.  
The ADM7155 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 600 mA of load current in a small, low  
profile footprint.  
Table 1. Related Devices  
Input  
Voltage  
Output  
Model  
Current Fixed/Adj1 Package  
The ADM7155 is available in four models that optimize power  
dissipation and PSRR performance as a function of input and  
output voltage. See Table 9 and Table 10 for selection guides.  
ADM7150ACP 4.5 V to 16 V 800 mA Fixed  
ADM7150ARD 4.5 V to 16 V 800 mA Fixed  
ADM7151ACP 4.5 V to 16 V 800 mA Adj  
ADM7151ARD 4.5 V to 16 V 800 mA Adj  
ADM7154ACP 2.3 V to 5.5 V 600 mA Fixed  
ADM7154ARD 2.3 V to 5.5 V 600 mA Fixed  
8-Lead LFCSP  
8-Lead SOIC  
8-Lead LFCSP  
8-Lead SOIC  
8-Lead LFCSP  
8-Lead SOIC  
The ADM7155 regulator typical output noise is 0.9 ꢀV rms from  
100 Hz to 100 kHz for fixed output voltage options and 1.5 nV/√Hz  
for noise spectral density from 10 kHz to 1 MHz.  
1 Adj means adjustable.  
Rev. C  
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 ©2014–2016 Analog Devices, Inc. All rights reserved.  
Technical Support  
www.analog.com  
 
 
 
 
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