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Analog Devices - RF Linear Regulator

Numéro de référence ADM7154
Description RF Linear Regulator
Fabricant Analog Devices 
Logo Analog Devices 





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ADM7154 fiche technique
Preliminary Technical Data
600 mA, Ultralow Noise,
High PSRR, RF Linear Regulator
ADM7154
FEATURES
Input voltage range: 2.3 V to 5.5 V
Maximum load current: 600 mA
Low noise
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 of 90 dB from 200 Hz to 200 kHz; 58 dB at 1 MHz,
VOUT = 3.3 V, VIN = 3.8 V
Dropout voltage: 120 mV typical at VOUT = 3.3 V, IOUT = 600 mA
Initial accuracy: ±0.5%
Accuracy over line, load, and temperature: −2.0% (minimum),
+1.5% (maximum)
Quiescent current, IGND = 4 mA at no load
Low shutdown current: 0.2 μA
Stable with a 10 μF ceramic output capacitor
Adjustable and fixed output voltage options: 1.2 V, 1.8 V, 2.5 V,
2.8 V, 3.0 V, 3.3 V (16 standard voltages between 1.2 V and
3.3 V available)
8-lead LFCSP and 8-lead SOIC packages
Precision enable
Supported by ADIsimPower tool
APPLICATIONS
Regulation to noise sensitive applications: PLLs, VCOs, and
PLLs with integrated VCOs
Communications and infrastructure
Backhaul and microwave links
GENERAL DESCRIPTION
The ADM7154 is a linear regulator that operates from 2.3 V to
5.5 V and provides up to 600 mA of output current. 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.
There are 16 standard output voltages for the ADM7154. The
following voltages are available in stock: 1.2 V, 1.8 V, 2.5 V, 2.8 V,
3.0 V, and 3.3 V. Additional voltages are available by special
order: 1.3 V, 1.5 V, 1.6 V, 2.0 V, 2.2 V, 2.6 V, 2.7 V, 2.9 V, 3.1 V,
and 3.2 V.
The ADM7154 regulator typical output noise is 0.9 μV 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. The ADM7154 is
available in an 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 output current in a small, low profile footprint.
Rev. PrE
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.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
TYPICAL APPLICATION CIRCUIT
VIN = 3.8V
CIN
10µF
ON
OFF
CBYP
1µF
CREG
10µF
ADM7154
VIN VOUT
VOUT = 3.3V
COUT
10µF
EN REF
BYP REF_SENSE
CREF
1µF
VREG
GND
Figure 1. Regulated 3.3 V Output from 3.8 V Input
10k
NOISE FLOOR
1.0µF
3.3µF
1k 10µF
33µF
100µF
330µF
100 1000µF
10
1
0.1
0.1 1 10 100 1k 10k 100k 1M
FREQUENCY (Hz)
Figure 2. Noise Spectral Density for Different Values of CBYP
Table 1. Related Devices
Model
Input
Voltage
ADM7150ACP 4.5 V to 16 V
ADM7150ARD 4.5 V to 16 V
ADM7151ACP 4.5 V to 16 V
ADM7151ARD 4.5 V to 16 V
ADM7155ACP 2.3 V to 5.5 V
ADM7155ARD 2.3 V to 5.5 V
Output
Current
800 mA
800 mA
800 mA
800 mA
600 mA
600 mA
Fixed/
Adj
Fixed
Fixed
Adj
Adj
Adj
Adj
Package
8-Lead LFCSP
8-Lead SOIC
8-Lead LFCSP
8-Lead SOIC
8-Lead LFCSP
8-Lead SOIC
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
©2014 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com

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