Datasheet ADM7160 (Analog Devices)

Ultralow Noise, 200 mA Linear Regulator Data Sheet ADM7160 FEATURES APPLICATION CIRCUIT PSRR performance of 54 dB at 100 kHz ADM7160 Ultralow noise independent of V V V IN = 2.9V OUT = 2.5V OUT 1 VIN VOUT 5 3 µV rms, 0.1 Hz to 10 Hz CIN COUT 4.7µF 4.7µF 9.5 µV rms, 0.1 Hz to 100 kHz 2 GND 2.5V TO 5V 9 µV rms, 10 Hz to 100 kHz ON 3 EN NC 4 17 µV rms, 10 Hz to 1 MHz OFF NC = NO CONNECT Low dropout voltage: 150 mV at 200 mA load Maximum output current: 200 mA VDD VREF 1.8V TO 5V IN+ DVDD Input voltage range: 2.2 V to 5.5 V 16-BIT/18-BIT ADC 0V TO VREF Low quiescent and shutdown current IN– DIGITAL OUTPUT Initial accuracy: ±1% VDD Accuracy over line, load, and temperature: −2.5%/+1.5%
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5-lead TSOT package and 6-lead LFCSP package
11334- 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 µF, ±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 capacitor, making the device ideal for noise-sensitive analog that provides excellent thermal performance for applications 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.
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Document Outline Features Applications Application Circuit General Description Table of Contents Revision History Specifications Input and Output Capacitors, Recommended Specifications Absolute Maximum Ratings Thermal Data Thermal Resistance ESD Caution Pin Configurations and Function Descriptions Typical Performance Characteristics Theory of Operation Enable Feature Soft Start Current-Limit and Thermal Overload Protection Applications Information Capacitor Selection Output Capacitor Input Bypass Capacitor Input and Output Capacitor Properties Thermal Considerations PCB Layout Considerations Typical Application Circuits Outline Dimensions Ordering Guide