LT1024_15 Datasheet, PDF (4/12 Pages) Linear Technology – Dual, Matched Picoampere, Microvolt Input, Low Noise Op Amp

LT1024
ELECTRICAL CHARACTERISTICS Matching Specifications. The ● denotes the specifications which apply over
the temperature range of 0°C ≤ T_A = 70°C for the LT1024AC and LT1024C; – 55°C ≤ T_A ≤ 125°C for the LT1024AM and LT1024M,
V_S = ±15V, V_CM = 0V unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
LT1024AM/LT1024AC
LT1024M/LT1024C
MIN TYP MAX MIN TYP MAX UNITS
Input Offset Voltage Match
0°C to 70°C
●
–55°C to 125°C
●
35
170
50
280
45
300
µV
70
500
µV
Input Offset Voltage Tracking
●
0.3
2
I_B+
Average Noninverting Bias Current 0°C to 70°C
●
±40 ±300
–55°C to 125°C
●
±100 ±800
I_OS+
Noninverting Offset Current
0°C to 70°C
●
–55°C to 125°C
●
40
300
80
800
0.4
±50
±200
50
150
3.5
±500
±1400
500
1500
µV/°C
pA
pA
pA
pA
∆CMRR Common Mode Rejection Ratio Match V_CM = ±13.5V
● 106 128
104 128
dB
∆PSRR Power Supply Rejection Ratio Match V_S = ±2.5V to ±18V
● 106 128
104 128
dB
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: Differential input voltages greater than 1V will cause excessive
current to flow through the input protection diodes unless limiting
resistance is used.
Note 3: The V⁺ supply terminals are completely independent and may be
powered by separate supplies if desired (this approach, however, would
sacrifice the advantages of the power supply rejection ratio matching). The
V^– supply terminals are both connected to the common substrate and
must be tied to the same voltage. Both V^– pins should be used.
Note 4: This parameter is tested on a sample basis only.
Optional Offset Nulling Circuit
V+
5k TO 100k
1 (8)
POT
3_–
(10)
2 (9)
14 (7)
13
1/2 _LT1024
4₊
OUTPUT
(6)
(11)
12 (5)
V–
INPUT OFFSET VOLTAGE CAN BE ADJUSTED
OVER A ±800µV RANGE WITH A 5k TO
100k POTENTIOMETER
LT1024 • EC01
TYPICAL PERFOR A CE CHARACTERISTICS
Offset Voltage vs Source
Resistance (Balanced or Unbalanced)
1000
V_S = ±15V
100
– 55°C TO 125°C
25°C
10
1
1k 3k 10k 30k 100k 300k 1M 3M 10M
SOURCE RESISTANCE (Ω)
LT1024 • TPC01
Input Offset Current vs
Temperature
60
V_S = ±15V
V_CM = 0V
50
40
30
20
10
0
– 50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
LT1024 • TPC02
1024fa
4