Datasheet

LTC6406
7
6406fc
Frequency Response
vs Closed-Loop Gain
Frequency Response
vs Load Capacitance
Frequency Response vs Input
Common Mode Voltage
TYPICAL PERFORMANCE CHARACTERISTICS
FREQUENCY (MHz)
6406 G16
GAIN (dB)
V
S
= 3V
V
OCM
= V
ICM
= 1.25V
R
LOAD
= 400Ω
50
40
30
20
10
0
–50
–40
–30
–20
–10
A
V
= 1
A
V
= 2
A
V
= 5
A
V
= 10
A
V
= 20
A
V
= 100
1 10010 1000 2000
A
V
(V/V) C
F
(pF)R
I
(Ω) R
F
(Ω)
1
2
5
10
20
100
150
150
150
150
150
150
150
300
750
1.5k
3k
15k
1.8
1.8
0.7
0.3
0.2
0
FREQUENCY (MHz)
6406 G17
GAIN (dB)
V
S
= 3V
V
OCM
= V
ICM
= 1.25V
R
LOAD
= 400Ω
R
I
= R
F
= 150Ω, C
F
= 1.8pF
CAPACITOR VALUES ARE FROM EACH
OUTPUT TO GROUND.
NO SERIES RESISTORS ARE USED.
30
20
10
0
–60
–50
–40
–30
–20
–10
C
L
= 0pF
C
L
= 2pF
C
L
= 3pF
C
L
= 4.7pF
C
L
= 10pF
1 10010 1000 2000
FREQUENCY (MHz)
6406 G18
GAIN (dB)
V
S
= 3V
V
OCM
= 1.25V
R
LOAD
= 400Ω
R
I
= R
F
= 150Ω, C
F
= 1.8pF
10
5
0
–5
–35
–30
–20
–10
–25
–15
V
ICM
= 0V
V
ICM
= 0.5V
V
ICM
= 1.25V
V
ICM
= 2V
V
ICM
= 3V
1 10010 1000 2000
Small-Signal Step Response Large-Signal Step Response Output Overdrive Response
10ns/DIV
6406 G13
20mV/DIV
V
S
= 3V
V
OCM
= V
ICM
= 1.25V
R
LOAD
= 400Ω
R
I
= R
F
= 150Ω, C
F
= 1.8pF
C
L
= 0pF
V
IN
= 200mV
P-P
, DIFFERENTIAL
+OUT
–OUT
10ns/DIV
6406 G14
0.2V/DIV
V
S
= 3V
R
LOAD
= 400Ω
V
IN
= 2V
P-P
, DIFFERENTIAL
+OUT
–OUT
100ns/DIV
6406 G15
2.5
2.0
1.5
VOLTAGE (V)
1.0
0.5
0
V
S
= 3V
V
OCM
= 1.25V
R
LOAD
= 200Ω TO GROUND PER OUTPUT
+OUT
–OUT
(QFN Package)