LT1491 Linear Technology, LT1491 Datasheet - Page 7

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

TYPICAL PERFORMANCE CHARACTERISTICS
0.001
0.01
0.1
10
35
30
25
20
15
10
1
5
0
0.01
0.1
Undistorted Output Swing
vs Frequency
Total Harmonic Distortion + Noise
vs Frequency
Open-Loop Gain
V
V
V
R
V
V
S
OUT
CM
L
S
S
= 3V, 0V
= 50k
= 15V
= 2.5V
= 1.2V
A
A
= 2V
V
V
= –1
= 1
OUTPUT VOLTAGE (5V/DIV)
–10V
P-P
R
L
FREQUENCY (kHz)
0.1
FREQUENCY (kHz)
= 50k
1
R
L
= 2k
0V
R
DISTORTION 1%
L
10
= 10k
10V
1
W
V
S
1490/91 G22
1490/91 G19
= 15V
1490/91 G25
U
100
10
0.001
0.01
–10
0.1
10
–2
– 4
– 6
10
–8
2
1
8
6
4
0
0.1
0
Settling Time to 0.1%
vs Output Step
Total Harmonic Distortion + Noise
vs Load Resistance
Large-Signal Response
V
A
V
V
A
V
S
V
S
S
V
IN
= 15V
= –1
LOAD RESISTANCE TO GROUND (k )
= 15V
= 3V TOTAL
= 1
20
= 2V
P-P
40
V
V
V
V
S
IN
S
IN
SETTLING TIME ( s)
AT 1kHz
= 3V, 0V
= 3V, 0V
= 0.5V TO 2.5V
= 0.2V TO 2.2V
1
V
V
60
S
IN
A
V
= 1.5V
= 1V
= –1
80
100
A
A
V
V
10
= 1
= 1
120 140 160
A
V
1490/91 G23
1490/91 F20
= –1
1490/91 G26
100
0.001
0.01
100
0.1
90
80
70
60
50
40
30
20
10
10
0
1
10
0
V
A
Capacitive Load Handling,
Overshoot vs Capacitive Load
Total Harmonic Distortion + Noise
vs Output Voltage
Small-Signal Response
R
V
f = 1kHz
V
I
S
V
SOURCE
S
L
CM
V
= 15V
= 1
V
S
= 5V, 0V
= 10k
S
A
A
= HALF SUPPLY
V
= 3V, 0V
= 1.5V
V
= –1
= 1
LT1490/LT1491
= 170 A
OUTPUT VOLTAGE (V
A
CAPACITIVE LOAD (pF)
V
100
= 1
1
A
V
V
S
A
= 1
= 1.5V
V
= 2
1000
A
V
A
2
V
P-P
= 10
= 5
V
S
)
A
= 3V, 0V
V
= –1
1490/91 G21
1490/91 G24
1490/91 G27
7
10000
3