ncs2561 ON Semiconductor, ncs2561 Datasheet - Page 9

• Manufacturer Part Number: ncs2561
• Description: 3.3v Single Channel Video Driver With Recontruction Filter And Sag Correction
• Manufacturer: ON Semiconductor

DC-Coupled Output
the sag correction option, with the built-in level shifter, the
NCS2561 can also be DC-coupled to a 150 W load. This has
the advantage of eliminating the AC-coupling capacitors at
the output by reducing the number of external components
and saving space on the board. This can be a key advantage
for some portable applications with limited space.
Video Driving Capability
was designed to be able to drive at least 2 video display loads
in parallel (2 different display or 1 display + 1 VCR). This
Video
Video
DAC
DAC
Having efficient output AC-coupled capability thanks to
With an output current capability of ±50 mA the NSC2561
1 V
0 V
1 V
0 V
Rs
Rs
IN
NCS2561
IN
NCS2561
Figure 17. NCS2561 Driving 2 Video Display (two 150 W loads)
Shifter
Level
Shifter
Level
Figure 16. DC-Coupled Input and Output Configuration
2-pole
2-pole
filter
filter
GND
2.7V to 3.3V
GND
2.7V to 3.3V
Vcc
Vcc
Vcc
Vcc
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NCS2561
+
-
+
-
Enable
Enable
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also eliminated providing the best video quality with
optimal dynamic or peak-to-peak amplitude of the video
signal allowing operating at the lower power supply voltage
(2.7 V) without risk of signal clipping. In this coupling
configuration the average output voltage is higher than 0 V
and the power consumption can be a little higher than with
an AC-coupled configuration.
applications is illustrated in the Figure 17. Figure 18
(multiburst) and Figure 19 (linearity) show that the video
signal can efficiently drive a 75 W equivalent load and not
degrade the video performance.
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The problems of field tilt effects on the video signal are
OUT
SAG
SAG
OUT
47 mF /
67 mF
22 mF
75 W
75 W
75 W
TV
Other Video
Display
75 W
75 W
TV
75 W