Datasheet LT1999-10, LT1999-20, LT1999-50 (Analog Devices) - 4

link to page 14 LT1999-10/LT1999-20/ LT1999-50
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, 0°C < TA < 70°C for C-grade parts, –40°C < TA < 85°C for I-grade parts, and –40°C < TA < 125°C for H-grade parts, otherwise specifications are at TA = 25°C. V+ = 5V, GND = 0V, VCM = 12V, VREF = floating, VSHDN = floating, unless otherwise specified. See Figure 2 . SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VSENSE Full-Scale Input Sense Voltage (Note 7) LT1999-10 l –0.35 0.35 V VSENSE = V+IN – V–IN LT1999-20 l –0.2 0.2 V LT1999-50 l –0.08 0.08 V VCM CM Input Voltage Range l –5 80 V RIN(DIFF) Differential Input Impedance ΔVINDIFF = ±2V/Gain l 6.4 8 9.6 kΩ RINCM CM Input Impedance ΔVCM = 5.5V to 80V l 5 20 MΩ ΔVCM = –5V to 4.5V l 3.6 4.8 6 kΩ VOSI Input Referred Voltage Offset –750 ±500 750 μV l –1500 1500 μV ΔVOSI/ΔT Input Referred Voltage Offset Drift 5 μV/°C AV Gain LT1999-10 l 9.95 10 10.05 V/V LT1999-20 l 19.9 20 20.1 V/V LT1999-50 l 49.75 50 50.25 V/V AV Error Gain Error ΔVOUT = ±2V l –0.5 ±0.2 0.5 % IB Input Bias Current VCM > 5.5V l 100 137.5 175 μA I(+IN) = I(–IN) VCM = –5V l –2.35 –1.95 –1.5 mA (Note 8) VSHDN = 0.5V, 0V < VCM < 80V l 0.001 2.5 μA IOS Input Offset Current VCM > 5.5V l –1 1 μA IOS = I(+IN) – I(–IN) VCM = –5V l –10 10 μA (Note 8) VSHDN = 0.5V, 0V < VCM < 80V l –2.5 2.5 μA PSRR Supply Rejection Ratio V+ = 4.5V to 5.5V l 68 77 dB CMRR Sense Input Common Mode Rejection VCM = –5V to 80V l 96 105 dB VCM = –5V to 5.5V l 96 120 dB VCM = 12V, 7VP-P, f = 100kHz, l 75 90 dB VCM = 0V, 7VP-P, f = 100kHz l 80 100 dB en Differential Input Referred Noise Voltage Density f = 10kHz 97 nV/√Hz f = 0.1Hz to 10Hz 8 μVP-P REFRR REF Pin Rejection, V+ = 5.5V ΔVREF = 3.0V LT1999-10 l 62 70 dB ΔVREF = 3.25V LT1999-20 l 62 70 dB ΔVREF = 3.25V LT1999-50 l 62 70 dB RREF REF Pin Input Impedance l 60 80 100 kΩ VSHDN = 0.5V l 0.15 0.4 0.65 MΩ VREF Open Circuit Voltage l 2.45 2.5 2.55 V VSHDN = 0.5V l 1 2.5 2.75 V VREFR REF Pin Input Range (Note 9) LT1999-10 l 1.25 V+ – 1.25 V LT1999-20 l 1.125 V+ – 1.125 V LT1999-50 l 1.125 V+ – 1.125 V Rev. E 4 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 Pin Functions Block Diagram Test Circuit Applications Information Theory of Operation Typical Applications Package Description Revision History Typical Application Related Parts