Datasheet

5
LT1920
TYPICAL PERFOR A CE CHARACTERISTICS
UW
FREQUENCY (Hz)
0.1
POSITIVE POWER SUPPLY REJECTION RATIO (dB)
60
80
100
100
10k
1920 G16
40
20
0
110 1k
120
140
160
100k
G = 1000
G = 10
G = 1
V
–
= –15V
T
A
= 25°C
G = 100
Positive Power Supply Rejection
Ratio vs Frequency
Gain vs Frequency
FREQUENCY (kHz)
0
GAIN (dB)
10
30
50
60
0.01 1 10 1000
1920 G17
–10
0.1
100
40
20
–20
G = 1000
G = 100
G = 10
G = 1
V
S
= ±15V
T
A
= 25°C
Supply Current vs Supply Voltage
SUPPLY VOLTAGE (±V)
0
SUPPLY CURRENT (mA)
1.00
1.25
85°C
25°C
–40°C
20
1920 G18
0.75
0.50
5
10
15
1.50
0.1Hz to 10Hz Noise Voltage, RTI
G = 1000
TIME (SEC)
0
NOISE VOLTAGE (0.2µV/DIV)
8
1920 G21
2
4
5
10
6
1
3
9
7
V
S
= ±15V
T
A
= 25°C
FREQUENCY (Hz)
1
0
100
1000
10 100 1k 100k10k
1920 G19
10
VOLTAGE NOISE DENSITY (nV√Hz)
V
S
= ±15V
T
A
= 25°C
1/f
CORNER
= 10Hz
1/f
CORNER
= 9Hz
1/f
CORNER
= 7Hz
GAIN = 1
GAIN = 10
GAIN = 100, 1000
BW LIMIT
GAIN = 1000
Voltage Noise Density
vs Frequency
TIME (SEC)
0
NOISE VOLTAGE (2µV/DIV)
8
1920 G20
2
4
5
10
6
1
3
9
7
V
S
= ±15V
T
A
= 25°C
0.1Hz to 10Hz Noise Voltage,
G = 1
Current Noise Density
vs Frequency
FREQUENCY (Hz)
1
10
CURRENT NOISE DENSITY (fA/√Hz)
100
1000
10 100 1000
1920 G22
V
S
= ±15V
T
A
= 25°C
R
S
TIME FROM OUTPUT SHORT TO GROUND (MINUTES)
0
–50
(SINK) (SOURCE)
OUTPUT CURRENT (mA)
–40
–20
–10
0
50
20
1
2
1920 G24
–30
30
40
10
3
T
A
= –40°C
V
S
= ±15V
T
A
= –40°C
T
A
= 25°C
T
A
= 85°C
T
A
= 85°C
T
A
= 25°C
Short-Circuit Current vs Time
TIME (SEC)
0
CURRENT NOISE (5pA/DIV)
8
1920 G23
2
4
5
10
6
1
3
9
7
V
S
= ±15V
T
A
= 25°C
0.1Hz to 10Hz Current Noise