LT1012A_15 Datasheet, PDF (8/20 Pages) Linear Technology – Picoamp Input Current, Microvolt Offset, Low Noise Op Amp

LT1012A/LT1012
TYPICAL PERFOR A CE CHARACTERISTICS
Offset Voltage vs Source
Resistance (Balanced or
Unbalanced)
1000
V_S = ±15V
100
Typical Distribution of Input Bias
Current
200
V_S = ±15V
T_A = 25°C
160 ^{VCM = 0V}
1020 UNITS
FROM THREE
RUNS
120
– 55°C TO 125°C
25°C
80
10
40
Typical Distribution of Input
Offset Current
200
V_S = ±15V
T_A = 25°C
160 ^{VCM = 0V}
1020 UNITS
FROM THREE
RUNS
120
80
40
1
1k 3k 10k 30k 100k 300k 1M 3M 10M
SOURCE RESISTANCE (Ω)
LT1012A • TPC01
0
–120 – 60
0
60
120
INPUT BIAS CURRENT (pA)
LT1012A • TPC02
Input Bias Current vs
Temperature
100
50
0
–50
–100
UNDERCANCELLED UNIT
OVERCANCELLED
UNIT
–150
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
LT1012A • TPC04
Warm-Up Drift
5
V_S = ±15V
T_A = 25°C
4
3
2
METAL CAN (H) PACKAGE
DUAL-IN-LINE PACKAGE
1
PLASTIC (N) OR SO (S)
0
0
1
2
3
4
5
TIME AFTER POWER ON (MINUTES)
LT1012A • TPC07
Input Bias Current Over Common
Mode Range
60
V_S = ±15V
T_A = 25^oC
40
DEVICE WITH POSITIVE
INPUT CURRENT
20
R_{IN CM} = 2 X 10¹²â„¦
0
DEVICE WITH NEGATIVE
INPUT CURRENT
–20
I_B
–
V_CM
+
–40
–60
–15
–10 –5
0
5
10 15
COMMON MODE INPUT VOLTAGE
LT1012A * TPC5
Long Term Stability of Four
Representative Units
10
8
6
4
2
0
–2
–4
–6
–8
–10
0
1
2
3
4
5
TIME (MONTHS)
LT1012A • TPC08
8
0
–120 –60
0
60
120
INPUT OFFSET CURRENT (pA)
LT1012A • TPC03
Offset Voltage Drift vs Source
Resistance (Balanced or
Unbalanced)
100
10
1.0 _MAXIMUM
TYPICAL
0.1
1k
10k 100k 1M 10M
SOURCE RESISTANCE (Ω)
100M
LT1012 • TPC06
Offset Voltage Drift with Temperature
of Four Representative Units
60
40
20
0
– 20
– 40
– 60
–50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
LT1012A • TPC09
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