Analog Devices Inc. EVAL-ADP7157 Evaluation Board demonstrates the operation and functionality of the ADP7157 regulators in a 10-lead LFCSP package. Simple device measurements like line and load regulation, dropout voltage, and ground current can be demonstrated. The board uses only a single voltage supply, load resistors, and a voltmeter or an ammeter.
Power supply rejection ratio (PSRR)
82dB from 1kHz to 100kHz; 55dB at 1MHz, VOUT = 3.3V, VIN = 3.8V
0.9µV rms total integrated noise from 100Hz to 100kHz
1.6uV rms total integrated noise from 10Hz to 100kHz
Noise spectral density 1.7nV/√Hz from 10kHz to 1MHz
Low dropout voltage 120mV typical at VOUT = 3.3V, IOUT = 1.2A
Maximum output current 1.2A
Input voltage range 2.3V to 5.5V
Low quiescent and shutdown current
Initial accuracy ±0.6% at ILOAD = 10mA
Accuracy over the line, load, and temperature ±1.5%
10-lead 3mm x 3mm LFCSP
Analog Devices Inc. ADP715x LDO Voltage Regulators
Use an advanced proprietary architecture for high power supply rejection and ultralow noise.