Datasheet

7
LT1490A/LT1491A
sn1490, 14901afbs
TOTAL SUPPLY VOLTAGE (V)
0
0
SUPPLY CURRENT PER AMPLIFIER (µA)
10
30
40
50
70
10
20
25 45
1490A 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
TOTAL SUPPLY VOLTAGE (V)
0
CHANGE IN INPUT OFFSET VOLTAGE (µV)
200
400
4
1490A 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
Output Saturation Voltage
vs Load Current (Output High)
Output Saturation Voltage
vs Load Current (Output Low)
0.1Hz to 10Hz Noise Voltage
FREQUENCY (Hz)
1
40
INPUT NOISE VOLTAGE DENSITY (nV/√Hz)
60
80
100
10 100 1k
1490A G08
20
120
FREQUENCY (Hz)
1
INPUT NOISE CURRENT DENSITY (pA/√Hz)
10 100 1k
1490A G09
0.20
0.25
0.30
0.35
0.15
0.10
0.05
0
TIME (SEC)
NOISE VOLTAGE (400nV/DIV)
2468
1490A G07
10103579
V
S
= ±2.5V
Noise Voltage Density
vs Frequency
Input Noise Current vs Frequency
TYPICAL PERFOR A CE CHARACTERISTICS
UW
COMMON MODE VOLTAGE (V)
4.0–0.4 0
INPUT BIAS CURRENT (nA)
5000
3000
1000
30
20
10
0
–10
5.6
1490A G03
4.4 4.8 5.2 44
T
A
= –55°C
T
A
= 25°C
T
A
= 125°C
V
S
= 5V, 0V
SOURCING LOAD CURRENT (A)
1µ
OUTPUT SATURATION VOLTAGE (V)
100m
10m
1490A G04
10m
10µ
100µ
1m
100m
1
T
A
= 125°C
V
S
= 5V, 0V
T
A
= 25°C
T
A
= –55°C
SINKING LOAD CURRENT (A)
0.1
µ
1m
OUTPUT SATURATION VOLTAGE (V)
10m
100m
1
1µ 10µ 100µ 1m
1490A G05
10m 100m
T
A
= 125°C
V
S
= 5V, 0V
T
A
= 25°C
T
A
= –55°C
INPUT OVERDRIVE (mV)
0
OUTPUT SATURATION VOLTAGE (mV)
60
80
100
40
1490A G06
40
20
50
70
90
30
10
0
10
20
30
50
OUTPUT HIGH
OUTPUT LOW
V
S
= 5V, 0V
NO LOAD