Datasheet LT1997-2 (Analog Devices) - 5

LT1997-2
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 G = 0.1 ±0.001 ±0.006 % l ±0.008 % G = 0.2 ±0.001 ±0.006 % l ±0.008 % G = 0.25 ±0.001 ±0.006 % l ±0.008 % ∆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 ±80 µV l ±200 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 = 0.1 l 115 137.5 160 kΩ G = 0.2 l 63 75 87 kΩ G = 0.25 l 52 62.5 73 kΩ Differential G = 0.1 l 420 500 580 kΩ G = 0.2 l 210 250 290 kΩ G = 0.25 l 168 200 232 kΩ CMRR Common Mode Rejection Ratio, Referred to G = 0.1, VCM = –25V to 10.75V 104 120 dB Output, MS16 Package l 102 dB G = 0.2, VCM = –12.5V to 7V 100 118 dB l 98 dB G = 0.25, VCM = –10V to 6.25V 100 118 dB l 98 dB CMRR Common Mode Rejection Ratio, Referred to G = 0.1, VCM = –25V to 10.75V 102 118 dB Output, DF14 Package l 100 dB G = 0.2, VCM = –12.5V to 7V 98 116 dB l 96 dB G = 0.25, VCM = –10V to 6.25V 98 116 dB l 96 dB ∆R/R Reference Divider Matching Error Available in MS16 Package Only ±0.002 ±0.009 % ∆R R l ±0.011 % = REF1 – RREF2 R ⎛ RREF1+RREF2 ⎞ ⎝⎜ 2 ⎠⎟ PSRR Power Supply Rejection Ratio (Note 9) VS = ±1.65V to ±25V, VCM = VOUT = Mid-Supply l 114 124 dB eni Output Noise Voltage Density f = 1kHz G = 0.1 37 nV/√Hz G = 0.2 39 nV/√Hz G = 0.25 40 nV/√Hz Rev 0 For more information www.analog.com 5 Document Outline FEATURES DESCRIPTION APPLICATIONS TYPICAL APPLICATION ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION ORDER INFORMATION ELECTRICAL CHARACTERISTICS TYPICAL PERFORMANCE CHARACTERISTICS PIN FUNCTIONS BLOCK DIAGRAM APPLICATIONS INFORMATION TYPICAL APPLICATIONS PACKAGE DESCRIPTION TYPICAL APPLICATION RELATED PARTS