FMS6143CS Fairchild Semiconductor, FMS6143CS Datasheet - Page 8

• Manufacturer Part Number: FMS6143CS
• Description: IC DRIVER VIDEO FILTER 3CH 8SOIC
• Manufacturer: Fairchild Semiconductor
• Type: Video Filterr

Specifications of FMS6143CS

• Applications: DVD, HD, Set-Top Boxes, Recorders
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: FMS6143CS_NL; FMS6143CS_NL

© 2006 Fairchild Semiconductor Corporation
FMS6143 • Rev. 4.0.8
The same method can be used for biased signals, with the
addition of a pull-up resistor to make sure the clamp never
operates. The internal pull-down resistance is 800kΩ
±20%, so the external resistance should be 7.5MΩ to set
the DC level to 500mV:
External video
source must
be AC coupled
The same circuits can be used with AC-coupled outputs if
desired.
DVD or
DVD or
Output
Output
DAC
DAC
STB
SoC
STB
SoC
Figure 16. AC-Coupled Inputs and Outputs
75Ω
Figure 14. Biased SCART with
Figure 15. DC-Coupled Inputs,
0.1μ
500mV +/-350mV
DC-Coupled Outputs
AC-Coupled Outputs
0.1μ
0.1μ
7.5MΩ
0V - 1.4V
0V - 1.4V
Clamp
Active
LCVF
Clamp
Active
LCVF
LCVF
Input
Bias
75Ω
75Ω
75Ω
220μ
220μ
8
NOTE: The video tilt or line time distortion is dominated by
the AC-coupling capacitor. The value may need to be incre-
ased beyond 220μF to obtain satisfactory operation in
some applications.
Power Dissipation
The FMS6143 output drive confi guration must be considered
when calculating overall power dissipation. Care must be
taken not to exceed the maximum die junction temperature.
The following example can be used to calculate the power
dissipation and internal temperature rise.
T
where: P
P
where: V
I
V
I
V
R
Board layout can also affect thermal characteristics. Refer
to the Layout Considerations section for details.
The FMS6143 is specifi ed to operate with output currents
typically less than 50mA, more than suffi cient for a dual
(75Ω) video load. Internal amplifi ers are current limited to a
maximum of 100mA and should withstand brief-duration
short-circuit conditions. This capability is not guaranteed.
External video
source must
be AC coupled
CH
CC
J
CHx
IN
CC
L
= T
= channel load resistance
= (I
= 19mA
= RMS value of input signal
= 5V
= V
A
CC
+ P
d
CC
O
/3) + (V
= P
= 2V
d
• I
• θ
Figure 17. Biased SCART with
CH1
CH
75Ω
JA
IN
O
- (V
0.1μ
+ 0.280V
AC-Coupled Outputs
+ P
/R
O
L
CH2
0V - 1.4V
)
2
/R
L
+ P
)
CH3
Clamp
Active
LCVF
and
75Ω
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220μ
(1)
(2)
(3)
(4)
(5)