LT1251 데이터 시트보기 (PDF) - Linear Technology
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LT1251 Datasheet PDF : 24 Pages
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TYPICAL PERFORMANCE CHARACTERISTICS
LT1251/LT1256
Supply Current vs
Full-Scale Voltage
14
VS = ±5V
12 INTERNAL RESISTORS
10
TA = – 55°C,
8
TA = 25°C
6
TA = 125°C
4
2
0
0
0.5
1.0
1.5 2.0
2.5
FULL-SCALE VOLTAGE, VFS (V)
1251/56 G20
Inverting Input Bias Current
vs Null Voltage
400
VS = ±5V
300 VFS = 2.5V
TA = 25°C
200
TA = –55°C
100
TA = 125°C
0
–100
–200
–300
–400
0 50 100 150 200 250 300
NULL VOLTAGE, REFERENCED TO V– (mV)
1251/56 G23
Positive Output Saturation
Voltage vs Load Current
1.7
VS = ±5V
1.5
1.3
1.1
TA = 25°C TA = –55°C
0.9
0.7
0.5
0
TA = 125°C
10
20
30
40
LOAD CURRENT (mA)
1251/56 G26
Supply Current vs
Full-Scale Current
14
VS = ±5V
12 VC = 0V
10
TA = 125°C
8
TA = – 55°C
6
4
2
0
0 100 200 300 400 500
FULL-SCALE CURRENT, IFS (µA)
1251/56 G21
Inverting Input Bias Current
vs Null Voltage
200
VS = ±5V
150 VFS = 1.25V
TA = 25°C
100
TA = –55°C
TA = 125°C
50
0
–50
–100
–150
–200
0 20 40 60 80 100 120 140 160
NULL VOLTAGE, REFERENCED TO V– (mV)
1251/56 G24
Negative Output Saturation
Voltage vs Load Current
3.0
VS = ±5V
2.5
2.0
TA = 25°C
1.5
TA = 125°C
TA = –55°C
1.0
Input Common Mode Range
vs Temperature
V+
V+ – 1
V+ – 2
V– +2
V– +1
V–
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1251/56 G22
Control and Full-Scale Amp Input
Bias Current vs Input Voltage
–400
–350
TA = –55°C
VS ≥ ±7.5V
–300
–250 TA = 25°C
–200
–150
TA = 125°C
–100
–50
0
0
1
2
3
4
5
INPUT VOLTAGE (V)
1251/56 G25
Output Short-Circuit Current
vs Temperature
60
50
40
0.5
0
–10
–20
–30
–40
LOAD CURRENT (mA)
1251/56 G27
30
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1251/56 G28
7
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