ADM7160 Datasheet | Analog Devices

FEATURES PSRR performance of 54 d B at 100 k Hz Ultralow noise independent of VOUT 3 µV rms, 0.1 Hz to 10 Hz 9.5 µV rms, 0.1 Hz to 100 k Hz 9 µV rms, 10 Hz to 100 k Hz 17 µV rms, 10 Hz to 1 MHz Low dropout voltage: 150 m V at 200 m A load Maximum output current: 200 m A 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 VIN = 2.9V CIN 4.7µF Ultralow Noise, 200 m A Linear Regulator ADM7160 APPLICATION CIRCUIT VIN GND EN VOUT 5 VOUT = 2.5V COUT 4.7µF 2.5V TO 5V ON OFF NC 4 NC = NO CONNECT VDD IN+ 0V TO VREF VREF DVDD DIGITAL OUTPUT 11334-101 1.8V TO 5V 16-BIT/18-BIT ADC IN- VDD APPLICATIONS ADC/DAC power supplies RF, VCO, and PLL power supplies Post dc-to-dc regulation 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 m A of output current. The low 150 m V dropout voltage at 200 m A 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 promising 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...