Ultralow Noise, 200 mA Linear Regulator Data Sheet ADM7160 FEATURES APPLICATION CIRCUIT PSRR performance of 54 dB at 100 kHz ADM7160 V = 2.9V V = 2.5V IN OUT Ultralow noise independent of V OUT 1 5 VIN VOUT C C IN OUT 3 V rms, 0.1 Hz to 10 Hz 4.7F 4.7F 2 GND 9.5 V rms, 0.1 Hz to 100 kHz 2.5V TO 5V ON 9 V rms, 10 Hz to 100 kHz 3 NC 4 EN OFF 17 V rms, 10 Hz to 1 MHz NC = NO CONNECT Low dropout voltage: 150 mV at 200 mA load VDD VREF 1.8V TO 5V Maximum output current: 200 mA IN+ DVDD Input voltage range: 2.2 V to 5.5 V 16-BIT/18-BIT ADC 0V TO V REF DIGITAL Low quiescent and shutdown current IN OUTPUT VDD Initial accuracy: 1% Accuracy over line, load, and temperature: 2.5%/+1.5% 5-lead TSOT package and 6-lead LFCSP package Figure 1. ADM7160 Powering a 16-Bit/18-Bit ADC APPLICATIONS ADC/DAC power supplies RF, VCO, and PLL power supplies Post dc-to-dc regulation GENERAL DESCRIPTION The ADM7160 is an ultralow noise, low dropout linear The ADM7160 is specifically designed for stable operation regulator that operates from 2.2 V to 5.5 V and provides up to with tiny 1 F, 30% ceramic input and output capacitors to 200 mA of output current. The low 150 mV dropout voltage at meet the requirements of high performance, space constrained 200 mA load improves efficiency and allows operation over a applications. wide input voltage range. The ADM7160 is available in tiny 5-lead TSOT and 6-lead Using an innovative circuit topology, the ADM7160 achieves LFCSP packages with 16 fixed output voltage options, ranging ultralow noise performance without the need for a bypass from 1.1 V to 3.3 V. The LFCSP offers a very compact solution that provides excellent thermal performance for applications capacitor, making the device ideal for noise-sensitive analog front-end and RF applications. The ADM7160 also achieves that require up to 200 mA of output current in a small, low ultralow noise performance without compromising PSRR or profile footprint. 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. 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 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. No Tel: 781.329.4700 20132014 Analog Devices, Inc. All rights reserved. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Technical Support www.analog.com Trademarks and registered trademarks are the property of their respective owners. 11334-101ADM7160 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Typical Performance Characteristics ..............................................7 Applications ....................................................................................... 1 Theory of Operation ...................................................................... 13 Application Circuit ........................................................................... 1 Enable Feature ............................................................................ 13 General Description ......................................................................... 1 Soft Start ...................................................................................... 14 Revision History ............................................................................... 2 Current-Limit and Thermal Overload Protection ................. 14 Specifications ..................................................................................... 3 Applications Information .............................................................. 15 Input and Output Capacitors, Recommended Specifications ... 4 Capacitor Selection .................................................................... 15 Absolute Maximum Ratings ............................................................ 5 Thermal Considerations ............................................................ 16 Thermal Data ................................................................................ 5 PCB Layout Considerations ...................................................... 19 Thermal Resistance ...................................................................... 5 Typical Application Circuits ......................................................... 20 ESD Caution .................................................................................. 5 Outline Dimensions ....................................................................... 21 Pin Configurations and Function Descriptions ........................... 6 Ordering Guide .......................................................................... 22 REVISION HISTORY 4/14Rev. 0 to Rev. A Changes to Ordering Guide .......................................................... 22 6/13Revision 0: Initial Version Rev. A Page 2 of 24