LT1490/LT1491
W
U
TYPICAL PERFORMANCE CHARACTERISTICS
Input Bias Current
vs Common Mode Voltage
Supply Current vs Supply Voltage
Minimum Supply Voltage
80
70
60
50
40
30
20
10
0
400
300
6000
4000
V
= 5V, 0V
S
T
= 125°C
A
T
200
100
2000
= 25°C
A
T
A
= –55°C
T
= 25°C
A
0
30
20
T
= –55°C
T
= –55°C
A
A
–100
–200
–300
10
0
T
= 25°C
A
T
= 125°C
T
= 125°C
A
A
–400
–10
0
5
10 15 20 25 30 35 40 45
TOTAL SUPPLY VOLTAGE (V)
0
1
3
4
5
4.0
4.4
5.2
5.6
44
2
4.8
TOTAL SUPPLY VOLTAGE (V)
COMMON MODE VOLTAGE (V)
1490/91 G01
1490/91 G02
1490/91 G03
Output Saturation Voltage
Output Saturation Voltage
vs Input Overdrive
Output Saturation Voltage
vs Load Current (Output Low)
vs Load Current (Output High)
1
1
100
90
80
70
60
50
40
30
20
10
0
V
V
= ±2.5V
OD
V = ±2.5V
S
NO LOAD
V
V
= ±2.5V
OD
S
S
= 30mV
= 30mV
T
= 125°C
T
= 125°C
A
A
0.1
0.1
T
= 25°C
A
T
= 25°C
A
T
A
= –55°C
T
A
= –55°C
OUTPUT HIGH
OUTPUT LOW
0.01
0.01
0.001
0.01
0.1
1
10
0.001
0.01
0.1
1
10
0
10 20 30 40 50 60 70 80 90 100
INPUT OVERDRIVE (mV)
1490/91 G06
SOURCING LOAD CURRENT (mA)
SINKING LOAD CURRENT (mA)
1490/90 G04
1490/90 G05
Noise Voltage Density
vs Frequency
0.1Hz to 10Hz Noise Voltage
Input Noise Current vs Frequency
80
70
60
50
40
30
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0
V
= ±2.5V
S
0
1
2
3
4
5
6
7
8
9
10
1
10
100
1k
1
10
100
1k
TIME (SEC)
FREQUENCY (Hz)
FREQUENCY (Hz)
1490/91 G08
1490/91 G09
1490 G07
5
Linear [ Linear ]
