Datasheet LT3042 (Analog Devices) - 10

LT3042
TYPICAL PERFORMANCE CHARACTERISTICS TJ = 25°C, unless otherwise noted. Power Supply Ripple Rejection as a Function of Error Amplifier Power Supply Ripple Rejection Input Pair Power Supply Ripple Rejection
120 120 100 110 110 90 100 100 80 90 90 70 80 80 60 IL = 200mA RSET = 33.2kΩ 70 70 50 COUT = 4.7µF PSRR (dB) 60 PSRR (dB) 60 PSRR (dB) 40 CSET = 0.47µF 50 50 30 V I V 100kHz 40 IN = 5V L = 200mA IN = VOUT + 2V R 40 20 SET = 33.2kΩ IL = 100mA IL = 200mA VOUT ≥ 1.3V 500kHz 30 COUT = 4.7µF IL = 50mA 30 COUT = 4.7µF 0.6V < VOUT < 1.3V 10 1MHz CSET = 0.47µF IL = 1mA CSET = 0.47µF VOUT ≤ 0.6V 2MHz 20 20 0 10 100 1k 10k 100k 1M 10M 10 100 1k 10k 100k 1M 10M 0 1 2 3 4 5 FREQUENCY (Hz) FREQUENCY (Hz) INPUT-TO-OUTPUT DIFFERENTIAL (V) 3042 G43 3042 G44 3042 G45
Integrated RMS Output Noise Integrated RMS Output Noise Integrated RMS Output Noise (10Hz to 100kHz) (10Hz to 100kHz) (10Hz to 100kHz)
2.0 9 2.0 VIN = 5V VIN = 5V VIN = VOUT + 2V 1.8 RSET = 33.2kΩ 8 RSET = 33.2kΩ 1.8 CSET = 4.7µF ) 1.6 COUT = 4.7µF ) COUT = 4.7µF ) COUT = 4.7µF C 7 I 1.6 I RMS SET = 4.7µF L = 200mA LOAD = 200mA µV 1.4 V RMS V RMS 6 1.4 1.2 1.2 5 1.0 1.0 4 0.8 0.8 3 0.6 0.6 RMS OUTPUT NOISE ( 0.4 RMS OUTPUT NOISE (µ 2 RMS OUTPUT NOISE (µ 0.4 0.2 1 0.2 0 0 0 0 20 40 60 80 100 120 140 160 180 200 0.01 0.1 1 10 100 0 1.5 3 4.5 6 7.5 9 10.5 12 13.5 15 LOAD CURRENT (mA) SET PIN CAPACITANCE (µF) OUTPUT VOLTAGE (V) 3042 G46 3042 G47 3042 G48
Noise Spectral Density Noise Spectral Density Noise Spectral Density
1000 100 100 C C SET = 0.047µF OUT = 4.7µF IL = 200mA C C SET = 0.47µF OUT = 22µF IL = 100mA C I SET = 1µF L = 50mA ) CSET = 4.7µF ) IL = 1mA 100 Hz C Hz Hz /√ SET = 22µF /√ 10 /√ 10 10 1 1 OUTPUT NOISE (nV 1 OUTPUT NOISE (nV V V IN = 5V IN = 5V OUTPUT NOISE (nV VIN = 5V R R SET = 33.2kΩ SET = 33.2kΩ RSET = 33.2kΩ C C OUT = 4.7µF SET = 4.7µF CSET = 4.7µF I I L = 200mA L = 200mA COUT = 4.7µF 0.1 0.1 0.1 10 100 1k 10k 100k 1M 10M 10 100 1k 10k 100k 1M 10M 10 100 1k 10k 100k 1M 10M FREQUENCY (Hz) FREQUENCY (Hz) FREQUENCY (Hz) 3042 G49 3042 G50 3042 G51 3042fb 10 For more information www.linear.com/LT3042 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Applications Information Typical Applications Package Description Revision History Typical Application Related Parts