LT1991 Linear Technology, LT1991 Datasheet - Page 8

• Manufacturer Part Number: LT1991
• Description: Precision / 100uA Gain Selectable Amplifier
• Manufacturer: Linear Technology

LT1991
TYPICAL PERFORMANCE CHARACTERISTICS
8
1000
0.01
100
–10
–20
120
100
0.1
30
20
10
10
80
60
40
20
0
1
0
1
1
Bandwidth vs Gain
1
Output Impedance vs Frequency
Gain vs Frequency
V
T
GAIN = 9
GAIN = 3
GAIN = 1
A
S
2
= 25°C
= 5V, 0V
3
10
GAIN = 3
4
GAIN SETTING (V/V)
FREQUENCY (kHz)
FREQUENCY (Hz)
5
10
100
6
GAIN = 9
7
8
1k
GAIN = 1
9
100
V
T
A
10
S
V
T A = 25°C
10k
S
= 25°C
= 5V, 0V
= 5V, 0V
11
1991 G13
1991 G16
1991 G10
12
100k
600
13
120
110
100
120
100
90
80
70
60
50
40
30
20
10
–1
–2
–3
–4
–5
–6
–7
–8
80
60
40
20
0
2
1
0
0
–50
0.5
10
CMRR vs Frequency
CMRR vs Temperature
Gain and Phase vs Frequency
PHASE
GAIN
GAIN = 1
V
GAIN = 1
S
1
–25
= ±15V
100
GAIN = 9
0
TEMPERATURE (°C)
FREQUENCY (kHz)
FREQUENCY (Hz)
1k
25
10
REPRESENTATIVE UNITS
50
10k
GAIN = 3
75
V
T
A
S
100k
V
T A = 25°C
GAIN = 1
= 25°C
100
= 5V, 0V
S
100
= 5V, 0V
(Difference Amplifi er Confi guration)
1991 G11
1991 G17
1991 G14
1M
125
400
0
–45
–90
–135
–180
0.030
0.025
0.020
0.015
0.010
0.005
120
110
100
90
80
70
60
50
40
30
20
10
0
0
–50
10
0
PSRR vs Frequency
Gain Error vs Temperature
0.01Hz to 1Hz Voltage Noise
GAIN = 1
GAIN = 1
V
V
T
MEASURED IN G =13
REFERRED TO OP AMP INPUTS
S
S
A
10 20 30 40 50 60 70 80 90 100
= 25°C
= ±15V
–25
= ±15V
100
GAIN = 9
www.DataSheet4U.com
0
TEMPERATURE (°C)
FREQUENCY (Hz)
25
TIME (s)
REPRESENTATIVE UNITS
1k
GAIN = 3
50
75
10k
V
T
A
S
= 5V, 0V
= 25°C
100
1991 G12
1991 G15
1991 G21
1991fg
100k
125