LT1251/LT1256
TYPICAL PERFORMANCE CHARACTERISTICS
Supply Current vs
Full-Scale Voltage
14
12
SUPPLY CURRENT (mA)
V
S
=
±5V
INTERNAL RESISTORS
SUPPLY CURRENT (mA)
10
8
6
4
2
0
0
0.5
2.0
1.5
FULL-SCALE VOLTAGE, V
FS
(V)
1.0
2.5
T
A
= – 55°C,
T
A
= 25°C
T
A
= 125°C
10
8
T
A
= – 55°C
6
4
2
0
0
300
400
100
200
FULL-SCALE CURRENT, I
FS
(µA)
500
COMMON MODE RANGE (V)
Inverting Input Bias Current
vs Null Voltage
400
INVERTING INPUT BIAS CURRENT (µA)
300
200
100
0
–100
–200
–300
–400
0
T
A
= 25°C
T
A
= –55°C
T
A
= 125°C
INVERTING INPUT BIAS CURRENT (µA)
V
S
= ±5V
V
FS
= 2.5V
100
50
0
–50
–100
–150
–200
0
INPUT BIAS CURRENT (nA)
250
100
150
200
300
50
NULL VOLTAGE, REFERENCED TO V
–
(mV)
1251/56 G23
Positive Output Saturation
Voltage vs Load Current
1.7
SATURATION VOLTAGE, V
+
– V
OUT
(V)
1.5
1.3
1.1
T
A
= 25°C
0.9
0.7
0.5
T
A
= 125°C
T
A
= –55°C
SATURATION VOLTAGE, V
OUT
– V
–
(V)
V
S
= ±5V
2.5
T
A
= 25°C
T
A
= –55°C
OUTPUT SHORT-CIRCUIT CURRENT (mA)
V
S
= ±5V
0
30
20
10
LOAD CURRENT (mA)
U W
1251/56 G20
Supply Current vs
Full-Scale Current
14
12
V
S
=
±5V
V
C
= 0V
T
A
= 125°C
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 G21
1251/56 G22
Inverting Input Bias Current
vs Null Voltage
200
150
V
S
= ±5V
V
FS
= 1.25V
T
A
= 25°C
T
A
= –55°C
T
A
= 125°C
–400
–350
–300
–250
–200
–150
–100
–50
Control and Full-Scale Amp Input
Bias Current vs Input Voltage
T
A
= –55°C
V
S
≥
±7.5V
T
A
= 25°C
T
A
= 125°C
20
40 60 80 100 120 140 160
NULL VOLTAGE, REFERENCED TO V
–
(mV)
1251/56 G24
0
0
1
2
3
INPUT VOLTAGE (V)
4
5
1251/56 G25
Negative Output Saturation
Voltage vs Load Current
3.0
60
Output Short-Circuit Current
vs Temperature
50
2.0
1.5
T
A
= 125°C
40
1.0
40
1251/56 G26
0.5
0
–30
–10
–20
LOAD CURRENT (mA)
–40
1251/56 G27
30
–50 –25
50
25
75
0
TEMPERATURE (°C)
100
125
1251/56 G28
7
LINER [ LINEAR TECHNOLOGY ]
