L T1 0 2 4 ELECTRICAL CHARACTERISTICS Matching Specifications. The ● denotes the specifications which apply overthe temperature range of 0 ° C ≤ TA = 70 ° C for the LT1024AC and LT1024C; – 55 ° C ≤ TA ≤ 125 ° C for the LT1024AM and LT1024M,VS = ± 15V, VCM = 0V unless otherwise noted.LT1024AM/LT1024ACLT1024M/LT1024CSYMBOLPARAMETERCONDITIONSMINTYPMAXMINTYPMAXUNITS Input Offset Voltage Match 0°C to 70°C ● 35 170 45 300 µV – 55°C to 125°C ● 50 280 70 500 µV Input Offset Voltage Tracking ● 0.3 2 0.4 3.5 µV/°C I + B Average Noninverting Bias Current 0°C to 70°C ● ±40 ±300 ±50 ±500 pA – 55°C to 125°C ● ±100 ±800 ±200 ±1400 pA I + OS Noninverting Offset Current 0°C to 70°C ● 40 300 50 500 pA – 55°C to 125°C ● 80 800 150 1500 pA ∆CMRR Common Mode Rejection Ratio Match VCM = ±13.5V ● 106 128 104 128 dB ∆PSRR Power Supply Rejection Ratio Match VS = ±2.5V to ±18V ● 106 128 104 128 dB Note 1: Absolute Maximum Ratings are those values beyond which the life Optional Offset Nulling Circuit of a device may be impaired. Note 2: Differential input voltages greater than 1V will cause excessive V+ current to flow through the input protection diodes unless limiting resistance is used. 5k TO 100k 1 (8) POT Note 3: The V+ supply terminals are completely independent and may be 2 (9) 3 powered by separate supplies if desired (this approach, however, would – 14 (7) (10) sacrifice the advantages of the power supply rejection ratio matching). The 13 1/2 LT1024 OUTPUT V– supply terminals are both connected to the common substrate and (6) 4 + must be tied to the same voltage. Both V– pins should be used. (11) 12 (5) Note 4: This parameter is tested on a sample basis only. INPUT OFFSET VOLTAGE CAN BE ADJUSTED V– OVER A ±800µV RANGE WITH A 5k TO 100k POTENTIOMETER LT1024 • EC01 WUTYPICAL PERFOR A CE CHARACTERISTICSOffset Voltage vs SourceInput Offset Current vsResistance (Balanced or Unbalanced)Temperature 1000 60 V V S = ±15V S = ±15V VCM = 0V 50 µV) 100 40 – 55°C TO 125°C 30 25°C 10 20 INPUT OFFSET VOLTAGE ( INPUT OFFSET CURRENT (pA) 10 1 0 1k 3k 10k 30k 100k 300k 1M 3M 10M – 50 –25 0 25 50 75 100 125 SOURCE RESISTANCE (Ω) TEMPERATURE (°C) LT1024 • TPC01 LT1024 • TPC02 1024fa 4
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