Datasheet

5
LT1490/LT1491
TOTAL SUPPLY VOLTAGE (V)
0
0
SUPPLY CURRENT PER AMPLIFIER (µA)
10
30
40
50
70
10
20
25 45
1490/91 G01
20
80
60
515
30
35
40
T
A
= 125°C
T
A
= 25°C
T
A
= –55°C
Supply Current vs Supply Voltage
COMMON MODE VOLTAGE (V)
4.0
INPUT BIAS CURRENT (nA)
2000
6000
5.6
1490/91 G03
30
10
4000
20
0
–10
4.4
4.8
5.2
44
T
A
= 125°C
T
A
= –55°C
T
A
= 25°C
V
S
= 5V, 0V
TOTAL SUPPLY VOLTAGE (V)
0
CHANGE IN INPUT OFFSET VOLTAGE (µV)
200
400
4
1490/91 G02
0
–200
100
300
–100
–300
–400
1
2
3
5
T
A
= 25°C
T
A
= 125°C
T
A
= –55°C
Minimum Supply Voltage
Input Bias Current
vs Common Mode Voltage
Output Saturation Voltage
vs Input Overdrive
SOURCING LOAD CURRENT (mA)
0.001 0.01 0.1 1 10
0.01
OUTPUT SATURATION VOLTAGE (V)
0.1
1
1490/90 G04
V
S
= ±2.5V
V
OD
= 30mV
T
A
= –55°C
T
A
= 125°C
T
A
= 25°C
Output Saturation Voltage
vs Load Current (Output High)
Output Saturation Voltage
vs Load Current (Output Low)
SINKING LOAD CURRENT (mA)
0.001 0.01 0.1 1 10
0.01
OUTPUT SATURATION VOLTAGE (V)
0.1
1
1490/90 G05
V
S
= ±2.5V
V
OD
= 30mV
T
A
= –55°C
T
A
= 125°C
T
A
= 25°C
INPUT OVERDRIVE (mV)
0
OUTPUT SATURATION VOLTAGE (mV)
60
80
100
80
1490/91 G06
40
20
50
70
90
30
10
0
20
40
60
10 90
30
50
70
100
V
S
= ±2.5V
NO LOAD
OUTPUT HIGH
OUTPUT LOW
0.1Hz to 10Hz Noise Voltage
FREQUENCY (Hz)
1
40
INPUT NOISE VOLTAGE DENSITY (nV/√Hz)
50
60
70
10 100 1k
1490/91 G08
30
80
FREQUENCY (Hz)
1
INPUT NOISE CURRENT DENSITY (pA/√Hz)
10 100 1k
1490/91 G09
0.20
0.25
0.30
0.35
0.15
0.10
0.05
0
TIME (SEC)
NOISE VOLTAGE (400nV/DIV)
2468
1490 G07
10103579
V
S
= ±2.5V
Noise Voltage Density
vs Frequency
Input Noise Current vs Frequency
TYPICAL PERFOR A CE CHARACTERISTICS
UW