LT1491 Linear Technology, LT1491 Datasheet - Page 6

• Manufacturer Part Number: LT1491
• Description: Dual and Quad Micropower Rail-to-Rail Input and Output Op Amps
• Manufacturer: Linear Technology

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