Datasheet LT1997-1 (Analog Devices) - 6

LT1997-1
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, –40°C < TA < 85°C for I-grade parts, –40°C < TA < 125°C for H-grade parts, otherwise specifications are at TA = 25°C. Difference Amplifier Configuration, V+ = 5V, V– = 0V, VCM = VOUT = VREF = VREF1 = VREF2 = Mid-Supply. VCMOP is the common mode voltage of the internal op amp. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
∆G Gain Error VOUT = 1V to 4V MS16 Package G = 10 ±0.005 ±0.012 % l ±0.014 % G = 20 ±0.01 ±0.022 % l ±0.028 % G = 50 ±0.015 ±0.035 % l ±0.037 % ∆G Gain Error VOUT = 1V to 4V DF14 Package G = 10 ±0.005 ±0.017 % l ±0.019 % G = 20 ±0.01 ±0.024 % l ±0.028 % G = 50 ±0.015 ±0.048 % l ±0.05 % ∆G/∆T Gain Drift vs Temperature (Note 6) VOUT = 1V to 4V l ±0.2 ±1 ppm/°C GNL Gain Nonlinearity VOUT = 1V to 4V ±1 ppm VOS Op Amp Offset Voltage (Note 9) V– < VCMOP < V+ – 1.75V ±20 ±65 µV l ±240 µV ∆VOS/∆T Op Amp Offset Voltage Drift (Note 6) V– < VCMOP < V+ – 1.75V l ±0.5 ±1.5 µV/°C IB Op Amp Input Bias Current V– + 0.25V < VCMOP < V+ – 1.75V –5 ±2 5 nA l –15 15 nA IOS Op Amp Input Offset Current V– + 0.25V < VCMOP < V+ – 1.75V –3 ±0.5 3 nA l –10 10 nA RIN Input Impedance (Note 8) Common Mode G = 10 l 69.3 82.5 95.7 kΩ G = 20 l 66.1 78.75 91.4 kΩ G = 50 l 64.2 76.5 88.8 kΩ Differential G = 10 l 25.2 30 34.8 kΩ G = 20 l 12.6 15 17.4 kΩ G = 50 l 5 6 7 kΩ CMRR Common Mode Rejection Ratio G = 10, VCM = 0V to +3.325V 106 124 dB MS16 Package l 104 dB G = 20, VCM = 0V to +3.2875V 109 125 dB l 106 dB G = 50, VCM = 0V to +3.265V 112 126 dB l 109 dB CMRR Common Mode Rejection Ratio G = 10, VCM = 0V to +3.325V 104 119 dB DF14 Package l 100 dB G = 20, VCM = 0V to +3.2875V 105 120 dB l 102 dB G = 50, VCM = 0V to 3.265V 107 121 dB l 105 dB ∆R/R Reference Divider Matching Error Available in MS16 Package Only ±0.002 ±0.006 % ∆ R R l ±0.008 % = REF1 – RREF2 R ⎛ RREF1+ RREF2 ⎞ ⎜ ⎟ ⎝ 2 ⎠ Rev 0 6 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Block Diagram Applications Information Package Description Typical Application Related Parts Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Applications Information Package Description Typical Application Related Parts