LT1490/LT1491
TYPICAL PERFORMANCE CHARACTERISTICS
W
U
Gain and Phase Shift
vs Frequency
Gain Bandwith Product
vs Temperature
Slew Rate vs Temperature
0.12
0.10
0.08
0.06
0.04
70
60
50
40
100
80
260
240
220
200
180
160
140
120
100
V
= ±2.5V
f = 1kHz
S
RISING, V = ±15V
60
S
PHASE
40
30
20
20
0
V
S
= ±15V
RISING, V = ±1.5V
S
GAIN
FALLING, V = ±15V
V
= ±3V
S
S
10
0
–20
–40
–60
–80
–100
FALLING, V = ±1.5V
S
–10
–20
–30
50
75 100 125
–50 –25
0
25
TEMPERATURE (°C)
50
75 100 125
1
10
100
1000
–50
0
25
–25
TEMPERATURE (°C)
FREQUENCY (kHz)
1490/91 G10
1490/91 G12
1490/91 G11
Gain Bandwidth Product and
CMRR vs Frequency
PSRR vs Frequency
Phase Margin vs Supply Voltage
250
240
230
220
210
200
190
180
170
160
150
60
50
40
30
20
10
120
80
70
V
= ±2.5V
S
PHASE MARGIN
100
80
60
40
20
60
50
V
S
= ±15V
POSITIVE SUPPLY
40
V
S
= ±1.5V
30
GAIN BANDWIDTH
20
NEGATIVE SUPPLY
10
0
R
= 10k
L
–10
–20
f = 1kHz
0
5
10 15 20 25 30 35 40 45
TOTAL SUPPLY VOLTAGE (V)
1
10
100
1
10
FREQUENCY (kHz)
100
FREQUENCY (kHz)
1490 G14
1490/91 G15
1490/91 G13
Gain Bandwith Product and Phase
Margin vs Load Resistance
Output Impedance vs Frequency
Channel Separation vs Frequency
350
300
250
200
150
100
50
80
130
120
110
100
90
10k
1k
V
= ±15V
V
= ±2.5V
V
A
= ±2.5V
S
S
S
V
F
= –1
R = R = 100k 70
G
f = 1kHz
A
A
= 100
= 10
V
V
PHASE MARGIN
60
50
40
30
20
100
10
80
GAIN BANDWIDTH
70
A
= 1
V
60
1
50
40
0.1
1
10
LOAD RESISTANCE (kΩ)
100
0.1
1
10
100
0.1
1
10
100
FREQUENCY (kHz)
FREQUENCY (kHz)
1490/91 G16
1490/91 G17
1490/91 G18
6
Linear [ Linear ]
