Datasheet LT1881, LT1882 (Analog Devices) - 3

LT1881/LT1882
ELECTRICAL CHARACTERISTICS The
l
denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at TA = 25°C. Single supply operation VS = 5V, 0V; VCM = VS/2 unless otherwise noted. (Note 5) C/I Grades H/MP Grades SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
VOS Input Offset Voltage (LT1881A) 25 50 μV 0°C < TA < 70°C l 85 μV – 40°C < TA < 85°C l 110 μV Input Offset Voltage (LT1881/LT1882) 30 80 30 80 μV 0°C < TA < 70°C l 125 μV – 40°C < TA < 85°C l 150 μV – 40°C < TA < 125°C l 300 μV – 55°C < TA < 125°C l 300 μV ΔV l OS/ΔT Input Offset Voltage Drift 0°C < TA < 70°C 0.3 0.8 μV/°C (Note 6) – 40°C < TA < 85°C l 0.3 0.8 μV/°C – 40°C < TA < 125°C l 0.3 0.8 μV/°C – 55°C < TA < 125°C l 0.3 0.8 μV/°C ΔVOS/ Long-Term Input Offset 0.3 0.3 μV/month ΔTIME Voltage Stability IOS Input Offset Current (LT1881A) 100 200 pA 0°C < TA < 70°C l 250 pA – 40°C < TA < 85°C l 300 pA Input Offset Current (LT1881/LT1882) 150 500 150 500 pA 0°C < TA < 70°C l 600 pA – 40°C < TA < 85°C l 700 pA – 40°C < TA < 125°C l 2000 pA – 55°C < TA < 125°C l 2000 pA IB Input Bias Current (LT1881A) 100 200 pA 0°C < TA < 70°C l 250 pA – 40°C < TA < 85°C l 300 pA Input Bias Current (LT1881/LT1882) 150 500 150 500 pA 0°C < TA < 70°C l 600 pA – 40°C < TA < 85°C l 700 pA – 40°C < TA < 125°C l 3000 pA – 55°C < TA < 125°C l 3000 pA Input Noise Voltage 0.1Hz to 10Hz 0.5 0.5 μVP-P en Input Noise Voltage Density f = 1kHz 14 14 nV/√Hz in Input Noise Current Density f = 1kHz 0.03 0.03 pA/√Hz RIN Input Resistance Differential Mode l 20 20 MΩ Common Mode l 100 100 GΩ CIN Input Capacitance l 2 2 pF VCM Input Voltage Range V– + 1.0 V+ – 1.0 V– + 1.0 V+ – 1.0 V l V– + 1.2 V+ – 1.2 V– + 1.2 V+ – 1.2 V CMRR Common Mode Rejection Ratio 1V < VCM < 4V 106 128 106 128 dB 1.2V < VCM < 3.8V l 104 102 dB PSRR Power Supply Rejection Ratio V– = 0V, VCM = 1.5V 0°C < TA < 85°C, 2.7V < V+ < 32V l 106 dB 0°C < TA < 125°C, 2.7V < V+ < 32V l 106 dB TA = –40°C, 3V < V+ < 32V 106 dB TA = –55°C, 3V < V+ < 32V 106 dB Minimum Operating Supply Voltage l 2.4 2.7 2.4 2.7 V 18812fb 3