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