Datasheet

10
LT1492/LT1493
TYPICAL PERFORMANCE CHARACTERISTICS
UW
Warm-Up Drift vs Time
Supply Current vs Temperature
TEMPERATURE (°C)
–50
SUPPLY CURRENT PER AMPLIFIER (mA)
25
1492/93 G28
0.45
0.35
–25 0 50
0.25
0.65
0.55
75 100 125
V
S
= ±15V
V
S
= 5V, 0V
TIME (SEC)
0
CHANGE IN OFFSET VOLTAGE (µV)
2
6
10
80
1492/93 G30
–2
–6
0
4
8
–4
–8
–10
20
40
60
10 90
30
50
70
100
N8 PACKAGE
R
L
= ∞
V
S
= ±2.5V
V
S
= ±15V
Supply Current vs Supply Voltage
SUPPLY VOLTAGE (V)
0
SUPPLY CURRENT PER AMPLIFIER (mA)
0.6
0.8
1.0
1492/93 G29
0.4
0.2
0
2
4
1
3
5
T
A
= 125°C
T
A
= 25°C
T
A
= –55°C
Input Bias Current
vs Common Mode Voltage
Input Bias Current vs Temperature
Common Mode Range
vs Temperature
TEMPERATURE (°C)
–50

50
55
+I
B
–I
B
65
25 75
1492/93 G31
45
40
–25 0
50 100 125
35
30
60
INPUT BIAS CURRENT (nA)
V
S
= 5V, 0V
I
OS
COMMON MODE VOLTAGE (V)
–1
INPUT BIAS CURRENT (nA)
–100
–60
–20
20
3
1492/93 G32
–140
–180
–120
–80
–40
0
–160
–200
–220
0
1
2
4
V
S
= 5V, 0V
T
A
= –55°C
T
A
= 125°C
T
A
= 25°C
TEMPERATURE (°C)
–50
COMMON MODE RANGE (V)
V
+
– 2
V
–
+ 2
V
–
– 1
V
–
0
V
+
1492/93 G33
–25 25 50 75 100 125
V
+
– 1
Input Referred Power Supply
Rejection Ratio vs Frequency
Input Noise Current, Noise Voltage
Density vs Frequency
FREQUENCY (Hz)
10
8
INPUT NOISE VOLTAGE DENSITY (nV/√Hz)
10
12
14
16
100 1k 10k
1492/93 G34
6
4
2
0
18
20
0.8
1.0
1.2
1.4
1.6
0.6
0.4
0.2
0
1.8
2.0
INPUT NOISE CURRENT DENSITY (pA/√Hz)
V
S
= ±15V
T
A
= 25°C
VOLTAGE NOISE
CURRENT NOISE
FREQUENCY (Hz)
10k
40
COMMON MODE REJECTION RATIO (dB)
60
80
100k 1M 10M
1492/93 G35
20
0
100
V
S
= ±2.5V
FREQUENCY (Hz)
40
POWER SUPPLY REJECTION RATIO (dB)
60
80
100
120
1k 100k 1M 10M
1492/93 G26
20
10k
POSITIVE SUPPLY
NEGATIVE SUPPLY
V
S
= ±15V
A
V
= 100
Common Mode Rejection Ratio
vs Frequency