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LT1028 Datasheet, PDF (6/20 Pages) Linear Technology – Ultra Low Noise Precision High Speed Op Amps | |||
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LT1028/LT1128
TYPICAL PERFOR A CE CHARACTERISTICS
Distribution of Input Offset
20 Voltage
18
VS = ±15V
TA = 25°C
16 800 UNITS TESTED
FROM FOUR RUNS
14
12
10
8
6
4
2
0
â50 â40 â30 â20 â10 0 10 20 30 40 50
OFFSET VOLTAGE (µV)
LT1028/1128 ⢠TPC10
Warm-Up Drift
24
VS = ±15V
20 TA = 25°C
16
METAL CAN (H) PACKAGE
12
8
4
DUAL-IN-LINE PACKAGE
PLASTIC (N) OR CERDIP (J)
0
0
1
2
3
4
5
TIME AFTER POWER ON (MINUTES)
LT1028/1128 ⢠TPC13
Voltage Noise vs Supply Voltage
1.5
TA = 25°C
1.25
AT 10Hz
1.0
AT 1kHz
0.75
0.5
0
±5
±10
±15
±20
SUPPLY VOLTAGE (V)
LT1028/1128 ⢠TPC16
Offset Voltage Drift with
Temperature of Representative Units
50
40 VS = ±15V
30
20
10
0
â10
â20
â30
â40
â50
â50 â25
0 25 50 75 100 125
TEMPERATURE (°C)
LT1028/1128 ⢠TPC11
Input Bias and Offset Currents
Over Temperature
60
VS = ±15V
VCM = 0V
50
40
30
BIAS CURRENT
20
10
OFFSET CURRENT
0
â50 â25
0 25 50 75 100 125
TEMPERATURE (ËC)
LT1028/1128 ⢠TPC14
Supply Current vs Temperature
10
9
8
VS = ±15V
7
6
VS = ±5V
5
4
3
2
1
0
â50 â25
0 25 50 75 100 125
TEMPERATURE (°C)
LT1028/1128 ⢠TPC17
Long-Term Stability of Five
Representative Units
10
8
VS = ±15V
TA = 25°C
6 t = 0 AFTER 1 DAY PRE-WARM UP
4
2
0
â2
â4
â6
â8
â10
0
1
2
3
4
5
TIME (MONTHS)
LT1028/1128 ⢠TPC12
Bias Current Over the Common-
Mode Range
100
80
RCM
=
20V
65nA
â
300Mâ¦
VS
TA
=
=
±15V
25°C
60 POSITIVE INPUT CURRENT
40 (UNDERCANCELLED) DEVICE
20
0
â20
â40
NEGATIVE INPUT CURRENT
â60
(OVERCANCELLED) DEVICE
â80
â15 â10 â5 0
5 10 15
COMMON-MODE INPUT VOLTAGE (V)
LT1028/1128 ⢠TPC15
Output Short-Circuit Current
vs Time
50
40
â50°C VS = ±15V
25°C
30
125°C
20
10
0
â10
â20
125°C
â30
25°C
â40
â50°C
â50
0
1
2
3
TIME FROM OUTPUT SHORT TO GROUND (MINUTES)
LT1028/1128 ⢠TPC18
6
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