Datasheet LT1991 (Analog Devices) - 5
| Manufacturer | Analog Devices |
| Description | Precision, 100µA Gain Selectable Amplifier |
| Pages / Page | 28 / 5 — ELECTRICAL. CHARACTERISTICS The. denotes the specifications which apply … |
| File Format / Size | PDF / 782 Kb |
| Document Language | English |
ELECTRICAL. CHARACTERISTICS The. denotes the specifications which apply over the operating
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
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the operating temperature range of –40°C to 125°C for H-grade parts, otherwise specifications are at TA = 25°C. Difference amplifier configuration, VS = 5V, 0V or ±15V; VCM = VREF = half supply, unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
∆G Gain Error VS = ±15V, VOUT = ±10V; RL = 10k G = 1 l ±0.08 % G = 3 or 9 l ±0.12 % GNL Gain Nonlinearity VS = ±15V; VOUT = ±10V; RL = 10k l 1 10 ppm ∆G/∆T Gain Drift vs Temperature (Note 6) VS = ±15V; VOUT = ±10V; RL = 10k l 0.3 3 ppm/°C CMRR Common Mode Rejection Ratio, VS = ±15V; VCM = ±15.2V Referred to Inputs (RTI) G = 9 l 77 100 dB G = 3 l 70 93 dB G = 1 l 70 90 dB VCM Input Voltage Range (Note 7) P1/M1 Inputs VS = ±15V; VREF = 0V l –28 27.6 V VS = 5V, 0V; VREF = 2.5V l –0.5 5.1 V VS = 3V, 0V; VREF = 1.25V l 0.75 2.35 V P1/M1 Inputs, P9/M9 Connected to REF VS = ±15V; VREF = 0V l –60 60 V VS = 5V, 0V; VREF = 2.5V l –14 16.8 V VS = 3V, 0V; VREF = 1.25V l –1.5 7.3 V P3/M3 Inputs VS = ±15V; VREF = 0V l –15.2 15.2 V VS = 5V, 0V; VREF = 2.5V l 0.5 4.2 V VS = 3V, 0V; VREF = 1.25V l 0.95 1.95 V P9/M9 Inputs VS = ±15V; VREF = 0V l –15.2 15.2 V VS = 5V, 0V; VREF = 2.5V l 0.85 3.9 V VS = 3V, 0V; VREF = 1.25V l 1.0 1.9 V VOS Op Amp Offset Voltage (Note 8) LT1991MS 25 100 µV l 285 µV LT1991DD 25 150 µV l 295 µV ∆VOS/∆T Op Amp Offset Voltage Drift (Note 6) l 0.3 1 µV/°C IB Op Amp Input Bias Current (Note 11) 2.5 5 nA l 25 nA IOS Op Amp Input Offset Current (Note 11) 50 1000 pA l 4500 pA Op Amp Input Noise Voltage 0.01Hz to 1Hz 0.35 µVP-P 0.01Hz to 1Hz 0.07 µVRMS 0.1Hz to 10Hz 0.25 µVP-P 0.1Hz to 10Hz 0.05 µVRMS en Input Noise Voltage Density G = 1; f = 1kHz 180 nV/√Hz G = 9; f = 1kHz 46 nV/√Hz RIN Input Impedance (Note 10) P1 (M1 = Ground) l 630 900 1170 kΩ P3 (M3 = Ground) l 420 600 780 kΩ P9 (M9 = Ground) l 350 500 650 kΩ M1 (P1 = Ground) l 315 450 585 kΩ M3 (P3 = Ground) l 105 150 195 kΩ M9 (P9 = Ground) l 35 50 65 kΩ ∆R Resistor Matching (Note 9) 450k Resistors l 0.02 0.08 % Other Resistors l 0.04 0.12 % ∆R/∆T Resistor Temperature Coefficient (Note 6) Resistor Matching l 0.3 3 ppm/°C Absolute Value l –30 ppm/°C 1991fh 5 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
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the operating temperature range of –40°C to 125°C for H-grade parts, otherwise specifications are at TA = 25°C. Difference amplifier configuration, VS = 5V, 0V or ±15V; VCM = VREF = half supply, unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
∆G Gain Error VS = ±15V, VOUT = ±10V; RL = 10k G = 1 l ±0.08 % G = 3 or 9 l ±0.12 % GNL Gain Nonlinearity VS = ±15V; VOUT = ±10V; RL = 10k l 1 10 ppm ∆G/∆T Gain Drift vs Temperature (Note 6) VS = ±15V; VOUT = ±10V; RL = 10k l 0.3 3 ppm/°C CMRR Common Mode Rejection Ratio, VS = ±15V; VCM = ±15.2V Referred to Inputs (RTI) G = 9 l 77 100 dB G = 3 l 70 93 dB G = 1 l 70 90 dB VCM Input Voltage Range (Note 7) P1/M1 Inputs VS = ±15V; VREF = 0V l –28 27.6 V VS = 5V, 0V; VREF = 2.5V l –0.5 5.1 V VS = 3V, 0V; VREF = 1.25V l 0.75 2.35 V P1/M1 Inputs, P9/M9 Connected to REF VS = ±15V; VREF = 0V l –60 60 V VS = 5V, 0V; VREF = 2.5V l –14 16.8 V VS = 3V, 0V; VREF = 1.25V l –1.5 7.3 V P3/M3 Inputs VS = ±15V; VREF = 0V l –15.2 15.2 V VS = 5V, 0V; VREF = 2.5V l 0.5 4.2 V VS = 3V, 0V; VREF = 1.25V l 0.95 1.95 V P9/M9 Inputs VS = ±15V; VREF = 0V l –15.2 15.2 V VS = 5V, 0V; VREF = 2.5V l 0.85 3.9 V VS = 3V, 0V; VREF = 1.25V l 1.0 1.9 V VOS Op Amp Offset Voltage (Note 8) LT1991MS 25 100 µV l 285 µV LT1991DD 25 150 µV l 295 µV ∆VOS/∆T Op Amp Offset Voltage Drift (Note 6) l 0.3 1 µV/°C IB Op Amp Input Bias Current (Note 11) 2.5 5 nA l 25 nA IOS Op Amp Input Offset Current (Note 11) 50 1000 pA l 4500 pA Op Amp Input Noise Voltage 0.01Hz to 1Hz 0.35 µVP-P 0.01Hz to 1Hz 0.07 µVRMS 0.1Hz to 10Hz 0.25 µVP-P 0.1Hz to 10Hz 0.05 µVRMS en Input Noise Voltage Density G = 1; f = 1kHz 180 nV/√Hz G = 9; f = 1kHz 46 nV/√Hz RIN Input Impedance (Note 10) P1 (M1 = Ground) l 630 900 1170 kΩ P3 (M3 = Ground) l 420 600 780 kΩ P9 (M9 = Ground) l 350 500 650 kΩ M1 (P1 = Ground) l 315 450 585 kΩ M3 (P3 = Ground) l 105 150 195 kΩ M9 (P9 = Ground) l 35 50 65 kΩ ∆R Resistor Matching (Note 9) 450k Resistors l 0.02 0.08 % Other Resistors l 0.04 0.12 % ∆R/∆T Resistor Temperature Coefficient (Note 6) Resistor Matching l 0.3 3 ppm/°C Absolute Value l –30 ppm/°C 1991fh 5 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
