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ADM7160AUJZ-2.5-R2 Arkusz danych(PDF) 1 Page - Analog Devices

Numer części ADM7160AUJZ-2.5-R2
Szczegółowy opis  Ultralow Noise, 200 mA Linear Regulator
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ADM7160AUJZ-2.5-R2 Arkusz danych(HTML) 1 Page - Analog Devices

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Ultralow Noise,
200 mA Linear Regulator
Data Sheet
ADM7160
Rev. 0
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
©2013 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
FEATURES
PSRR performance of 54 dB at 100 kHz
Ultralow noise independent of VOUT
3 µV rms, 0.1 Hz to 10 Hz
9.5 µV rms, 0.1 Hz to 100 kHz
9 µV rms, 10 Hz to 100 kHz
17 µV rms, 10 Hz to 1 MHz
Low dropout voltage: 150 mV at 200 mA load
Maximum output current: 200 mA
Input voltage range: 2.2 V to 5.5 V
Low quiescent and shutdown current
Initial accuracy: ±1%
Accuracy over line, load, and temperature: −2.5%/+1.5%
5-lead TSOT package and 6-lead LFCSP package
APPLICATIONS
ADC/DAC power supplies
RF, VCO, and PLL power supplies
Post dc-to-dc regulation
APPLICATION CIRCUIT
1
2
3
5
4
16-BIT/18-BIT ADC
CIN
4.7µF
COUT
4.7µF
VOUT = 2.5V
VIN = 2.9V
VOUT
NC
VIN
GND
ADM7160
EN
OFF
ON
NC = NO CONNECT
VDD
VDD
IN+
IN–
VREF
DVDD
DIGITAL
OUTPUT
1.8V TO 5V
2.5V TO 5V
0V TO VREF
Figure 1. ADM7160 Powering a 16-Bit/18-Bit ADC
GENERAL DESCRIPTION
The ADM7160 is an ultralow noise, low dropout linear
regulator that operates from 2.2 V to 5.5 V and provides up to
200 mA of output current. The low 150 mV dropout voltage at
200 mA load improves efficiency and allows operation over a
wide input voltage range.
Using an innovative circuit topology, the ADM7160 achieves
ultralow noise performance without the need for a bypass
capacitor, making the device ideal for noise-sensitive analog
front-end and RF applications. The ADM7160 also achieves
ultralow noise performance without compromising PSRR or
transient line and load performance.
Current-limit and thermal overload protection circuits prevent
damage under adverse conditions. The ADM7160 also includes
an internal pull-down resistor on the EN input.
The ADM7160 is specifically designed for stable operation
with tiny 1 µF, ±30% ceramic input and output capacitors to
meet the requirements of high performance, space constrained
applications.
The ADM7160 is available in tiny 5-lead TSOT and 6-lead
LFCSP packages with 16 fixed output voltage options, ranging
from 1.1 V to 3.3 V. The LFCSP offers a very compact solution
that provides excellent thermal performance for applications
that require up to 200 mA of output current in a small, low
profile footprint.


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