LT1806CS6-PBF LINER [Linear Technology], LT1806CS6-PBF Datasheet - Page 22

• Manufacturer Part Number: LT1806CS6-PBF
• Description: 325MHz, Single/Dual,Rail-to-Rail Input and Output, Low Distortion,Low Noise Precision Op Amps
• Manufacturer: LINER [Linear Technology]

LT1806/LT1807
Single Supply Video Line Driver
The LT1806/LT1807 are wideband rail-to-rail op amps with
large output current that allows them to drive video signals
in low supply applications. Figure 4 depicts a single supply
video line driver with AC coupling to minimize the quiescent
power dissipation. Resistors R1 and R2 are used to level-
shift the input and output to provide the largest signal
swing. The gain of 2 is set up with R3 and R4 to restore
the signal at V
matching of the 75Ω line with the back-terminated resistor,
TYPICAL APPLICATIONS
22
OUT
, which is attenuated by 6dB due to the
V
IN
R
75Ω
T
33μF
C1
Figure 5. Video Line Driver Frequency Response
R1
5k
R2
5k
Figure 4. 5V Single Supply Video Line Driver
+
3
2
–1
–2
–3
–4
–5
R3
1k
5
4
3
2
1
0
C2
150μF
0.2
+
–
LT1806
V
S
= 5V, 0V
5V
7
4
1
3pF
R4
1k
C4
FREQUENCY (MHz)
6
R5. The back termination will eliminate any refl ection of
the signal that comes from the load. The input termination
resistor, R
the incoming line is necessary. The values of C1, C2 and
C3 are selected to minimize the droop of the luminance
signal. In some less stringent requirements, the value of
capacitors could be reduced. The –3dB bandwidth of the
driver is about 90MHz on 5V supply, and the amount of
peaking will vary upon the value of capacitor C4.
1000μF
10
C3
75Ω
R5
T
100
, is optional—it is used only if matching of
18067 F05
COAX CABLE
75W
R
75Ω
18067 F04
LOAD
V
OUT
18067fb