Datasheet LT1991 (Analog Devices) - 8
| Manufacturer | Analog Devices |
| Description | Precision, 100µA Gain Selectable Amplifier |
| Pages / Page | 28 / 8 — TYPICAL PERFORMANCE CHARACTERISTICS (Difference Amplifier Configuration). … |
| File Format / Size | PDF / 782 Kb |
| Document Language | English |
TYPICAL PERFORMANCE CHARACTERISTICS (Difference Amplifier Configuration). Bandwidth vs Gain. CMRR vs Frequency
Model Line for this Datasheet
- LT1991ACDD#PBF LT1991ACDD#TRPBF LT1991ACMS#PBF LT1991ACMS#TRPBF LT1991AIDD#PBF LT1991AIDD#TRPBF LT1991AIMS#PBF LT1991AIMS#TRPBF LT1991CDD#PBF LT1991CDD#TRPBF LT1991CMS#PBF LT1991CMS#TRPBF LT1991HDD#PBF LT1991HDD#TRPBF LT1991HMS#PBF LT1991HMS#TRPBF LT1991IDD#PBF LT1991IDD#TRPBF LT1991IMS#PBF LT1991IMS#TRPBF
Text Version of Document
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
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
