LTC6405 Linear Technology, LTC6405 Datasheet - Page 8

• Manufacturer Part Number: LTC6405
• Description: Rail-to-Rail Input Differential Amplifier/Driver
• Manufacturer: Linear Technology

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LTC6405
TYPICAL PERFORMANCE CHARACTERISTICS
8
–10
–20
–30
–40
–50
50
40
30
20
10
0
1
Small Signal Step Response
Frequency Response
vs Closed Loop Gain
V
V
R
V
V
R
A
A
A
A
S
OCM
LOAD
S
OCM
LOAD
V
V
V
V
= 5V
= 5V
= 100
= 20
= 2
= 1
A
= V
V
= 400
= V
100
10
20
= 400
(V/V)
1
2
5
ICM
ICM
A
V
= 2.5V
10
FREQUENCY (MHz)
= 10
= 2.5V
R
200
200
200
200
200
200
A
I
V
( )
10ns/DIV
= 5
R
C
C
F
L
I
= R
= 1.8pF
= 0pF
R
F
200
400
F
20k
100
1k
2k
4k
= 200
( )
+OUT
–OUT
C
F
1.8
1.5
0.6
0.2
0
0
(pF)
1000 2000
6405 G16
6405 G13
–10
–20
–30
–40
–50
–60
30
20
10
0
1
Frequency Response
vs Load Capacitance
Large Signal Step Response
V
R
V
V
V
R
R
CAPACITOR VALUES ARE FROM EACH
OUTPUT TO GROUND.
NO SERIES RESISTORS ARE USED.
S
IN
LOAD
S
OCM
LOAD
I
= 5V
= R
= 2V
= 5V
F
= 400
= V
C
C
C
C
C
= 400
P-P
= 200 , C
L
L
L
L
L
= 4.7pF
ICM
= 0pF
= 2pF
= 3pF
= 10pF
, DIFFERENTIAL
10
FREQUENCY (MHz)
= 2.5V
F
10ns/DIV
= 1.8pF
100
+OUT
–OUT
1000 2000
6405 G17
6405 G14
(QFN Package)
–10
–15
–20
–25
–30
–35
–40
4.5
4.0
3.0
2.5
2.0
3.5
1.5
1.0
0.5
10
–5
0
5
0
1
V
V
R
Frequency Response vs Input
Common Mode Voltage
Overdriven Output
Transient Response
V
V
R
R
S
OCM
LOAD
S
OCM
LOAD
I
= 5V
= R
= 5V
= 2.5V
= 400 TO GROUND PER OUTPUT
= 2.5V
F
V
V
V
V
V
V
= 400
= 200 , C
ICM
ICM
ICM
ICM
ICM
ICM
= 0V
= 0.5V
= 1.25V
= 2.5V
= 4V
= 5V
10
FREQUENCY (MHz)
100ns/DIV
F
–OUT
+OUT
= 1.8pF
100
1000 2000
6405 G15
6405 G18
6405fa