Datasheet LT1991 (Analog Devices) - 8

LT1991
TYPICAL PERFORMANCE CHARACTERISTICS (Difference Amplifier Configuration) Bandwidth vs Gain CMRR vs Frequency PSRR vs Frequency
120 120 120 VS = 5V, 0V VS = 5V, 0V VS = 5V, 0V T 110 GAIN = 9 110 A = 25°C TA = 25°C TA = 25°C 100 100 100 90 GAIN = 1 GAIN = 3 90 GAIN = 9 80 80 80 GAIN = 1 GAIN = 3 70 70 60 60 60 CMRR (dB) 50 PSRR (dB) 50 40 40 40 –3dB BANDWIDTH (kHz) 30 30 20 20 20 10 10 0 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 10 100 1k 10k 100k 1M 10 100 1k 10k 100k GAIN SETTING (V/V) FREQUENCY (Hz) FREQUENCY (Hz) 1991 G10 1991 G11 1991 G12
Output Impedance vs Frequency CMRR vs Temperature Gain Error vs Temperature
1000 0.030 V 120 S = 5V, 0V GAIN = 1 GAIN = 1 TA = 25°C VS = ±15V VS = ±15V 0.025 100 100 0.020 GAIN = 9 80 10 GAIN = 3 60 0.015 1 GAIN = 1 CMRR (dB) 40 GAIN ERROR (%) 0.010 OUTPUT IMPEDANCE (Ω) 0.1 20 0.005 REPRESENTATIVE UNITS REPRESENTATIVE UNITS 0.01 0 0 1 10 100 1k 10k 100k –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 FREQUENCY (Hz) TEMPERATURE (°C) TEMPERATURE (°C) 1991 G13 1991 G14 1991 G15
Gain vs Frequency Gain and Phase vs Frequency 0.01Hz to 1Hz Voltage Noise
30 2 VS = 5V, 0V VS = 5V, 0V V TA = 25°C 1 PHASE T 0 S = ±15V A = 25°C TA = 25°C 20 GAIN = 9 0 GAIN = 1 MEASURED IN G =13 /DIV) GAIN REFERRED TO OP AMP INPUTS –1 –45 GAIN = 3 PHASE (deg) 10 –2 –3 –90 GAIN (dB) GAIN = 1 0 GAIN (dB) –4 TAGE NOISE (100nV –5 –135 –10 –6 –7 –180 OP AMP VOL –20 –8 1 10 100 600 0.5 1 10 100 400 0 10 20 30 40 50 60 70 80 90 100 FREQUENCY (kHz) FREQUENCY (kHz) TIME (s) 1991 G16 1991 G17 1991 G21 1991fh 8 Document Outline Features Applications Description Typical Application 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