Datasheet
LT6411
6
6411f
Input Noise Spectral Density
Positive Input Impedance
vs Frequency
PSRR vs Frequency
Frequency Response
vs Gain Confi guration
Gain Flatness vs Frequency
Frequency Response with
Capacitive Loads
Harmonic Distortion vs Frequency,
Differential Input
Harmonic Distortion vs Amplitude,
30MHz, Differential Input
Harmonic Distortion vs Load,
30MHz, Differential Input
TYPICAL PERFORMANCE CHARACTERISTICS
All measurements are per amplifi er with single-ended outputs unless otherwise noted.
6553 G10
FREQUENCY (kHz)
0.001 0.01 1 10 1000.1
1000
100
10
1
i
n
INPUT NOISE (nV/√Hz OR pA/√Hz)
V
S
= ±5V
A
V
= 2
T
A
= 25°C
e
n
6411 G11
FREQUENCY (MHz)
0.01 0.1
INPUT IMPEDANCE (kΩ)
10 100 10001
1000
100
10
1
0.1
V
S
= ±5V
V
IN
= 0V
T
A
= 25°C
6411 G12
FREQUENCY (MHz)
REJECTION RATIO (dB)
0.001 0.01 1 10 1000.1
70
60
50
40
30
20
10
0
V
S
= ±5V
A
V
= 2
T
A
= 25°C
–PSRR
+PSRR
±PSRR
FREQUENCY (MHz)
–3
GAIN (dB)
0
3
6
9
0.1 10 100 1000
6411 G13
–6
1
A
V
= 2, V
OUT
= 200mV
P-P
A
V
= 1, A
V
= –1,V
OUT
= 200mV
P-P
A
V
= 2, V
OUT
= 2V
P-P
A
V
= 1, V
OUT
= 2V
P-P
A
V
= –1, V
OUT
= 2V
P-P
V
S
= ±5V
R
L
= 150Ω
T
A
= 25°C
FREQUENCY (MHz)
5.8
NORMALIZED GAIN (dB)
6.4
6.5
5.7
5.6
6.3
6.0
6.2
6.1
5.9
0.1 10 100 1000
6411 G14
5.5
1
CHANNEL 1
CHANNEL 2
V
S
= ±5V
A
V
= 2
V
OUT
= 200mV
P-P
R
L
= 150Ω
T
A
= 25°C
FREQUENCY (MHz)
AMPLITUDE (dB)
18
16
14
12
10
8
6
4
2
0
–2
–4
–6
6553 G15
0.1 1 10 100 1000
C
L
= 12pF
C
L
= 6.8pF
C
L
= 2.2pF
V
S
= ±5V
A
V
= 2
V
OUT
= 2V
P-P
R
L
= 150Ω
T
A
= 25°C
FREQUENCY (MHz)
1
–100
DISTORTION (dBc)
–80
–60
–40
–20
10 100
6411 G16
0
V
OUT
= 2V
P-P
, DIFFERENTIAL
A
V
= 2, V
CC
= 5V
V
EE
= 0V, V
CM
= 1.6V
DIFFERENTIAL R
LOAD
T
A
= 25°C
–90
–70
–50
–30
–10
HD3, R
L
= 200Ω
HD3, R
L
= ∞
HD2, R
L
= ∞
HD2, R
L
= 200Ω
DIFFERENTIAL OUTPUT AMPLITUDE (V
P-P
)
0.4
–100
DISTORTION (dBc)
–90
–70
–60
–50
0
–30
0.8
1.2
1.4
6411 G17
–80
–20
–10
–40
0.6 1.0
1.6
HD3
HD2
1.8
2.0
A
V
= 2, V
CC
= 5V
V
EE
= 0V, V
CM
= 1.6V
R
L
= ∞
T
A
= 25°C
DIFFERENTIAL R
LOAD
(Ω)
0
DISTORTION (dBc)
–40
–20
0
800
1011 G06
–60
–80
–50
–30
–10
–70
–90
–100
200100
400300
600
HD3
HD2
700 900
500
1000
V
OUT
= 2V
P-P
, DIFFERENTIAL
A
V
= 2, V
CC
= 5V
V
EE
= 0V, V
CM
= 1.6V
T
A
= 25°C