LT1112 Datasheet, PDF (6/12 Pages) Linear Technology – Dual/Quad Low Power Precision, Picoamp Input Op Amps

LT1112/LT1114
TYPICAL PERFOR A CE CHARACTERISTICS
Input Bias and Offset Current,
Noninverting Bias Current Match
vs Temperature
200
∆I_B+
100
I_OS
0
I_B (UNDERCANCELLED)
–100
I_B (OVERCANCELLED)
V_S = ±15V
–200
–75 –50 –25 0
25 50 75
TEMPERATURE (°C)
100 125
LT1112/14 • TPC01
Drift with Temperature
LT1112N8/J8, LT1114J
20
850 OP AMPS TESTED
100 LT1112J8
165 LT1112N8
15 ^{80 LT1114J}
V_S = ±15V
10
5
Input Bias Current Over
Common-Mode Range
150
V_S = ±15V
T_A = 25°C
100 _{RINCM = 800GΩ}
50 _{DEVICE WITH POSITIVE INPUT CURRENT}
0 DEVICE WITH NEGATIVE INPUT CURRENT
–50
–100
–
I_{B +}
VCM
–150
–15 –10 –5
0
5
10 15
COMMON-MODE INPUT VOLTAGE (V)
LT1112/14 • TPC02
Drift with Temperature
LT1112S8, LT1114N/S
25
960 OP AMPS TESTED
240 LT1112S8
20 ^{80 LT1114N}
40 LT1114S
V_S = ±15V
15
10
5
0
–0.8 –0.6 –0.4 –0.2 0 0.2 0.4 0.6 0.8
OFFSET VOLTAGE DRIFT WITH TEMPERATURE (µV/°C)
LT1112/14 • TPC04
Distribution of Offset
Voltage Match
25
V_S = ±15V
T_A = 25°C
20
15
10
5
0
–100–80 –60 – 40 –20 0 20 40 60 80 100
∆V_OS, OFFSET VOLTAGE MATCH (µV)
LT1112/14 • TPC07
6
0
–1.4 –1.0 –0.6 –0.2 0.2 0.6 1.0 1.4
OFFSET VOLTAGE DRIFT WITH TEMPERATURE (µV/°C)
LT1112/14 • TPC05
Distribution of Offset Voltage
Match Drift (LT1112J8, LT1112N8,
LT1114J Packages)
30
V_S = ±15V
342 PAIRS TESTED
25
20
15
10
5
0
–0.8 –0.6 –0.4 –0.2 0 0.2 0.4 0.6 0.8
OFFSET VOLTAGE MATCH DRIFT (µV/°C)
LT1112/14 • TPC08
Distribution of Input Bias Current
(In All Packages Except LT1114S)
30
V_S = ±15V
T_A = 25°C
20
10
0
–300 –200 –100 0 100 200 300
INPUT BIAS CURRENT (pA)
LT1112/14 • TPC03
Distribution of Offset Voltage at
V_S = ±1.0V (In All Packages)
30
T_A = 25°C
25
20
15
10
5
0
–80 –60 –40 –20 0 20 40 60 80 100
INPUT OFFSET VOLTAGE (µV)
LT1112/14 • TPC06
Distribution of Offset Voltage
Match Drift (LT1112S8, LT1114N,
LT1114S Packages)
20
V_S = ±15V
364 PAIRS TESTED
15
10
5
0
–1.6 –1.2 –0.8 –0.4 0 0.4 0.8 1.2 1.6
OFFSET VOLTAGE MATCH DRIFT (µV/°C)
LT1112/14 • TPC09