cx25870 Conexant Systems, Inc., cx25870 Datasheet - Page 283

• Manufacturer Part Number: cx25870
• Description: Video Encoder With Adaptive Flicker Filtering And Hdtv Output
• Manufacturer: Conexant Systems, Inc.

CX25870/871
Flicker-Free Video Encoder with Ultrascale Technology
Figure E-4. Recommended Low Pass Filter Configuration for each CX25870 DAC for Generation of High Definition and
NTSC/PAL/SECAM TV Outputs
100381B
NOTE(S):
1.
2.
HD Filter imparts a passband of DC to 30 MHz.
SD Filter imparts a passband of DC to 8 MHz.
CX25870/871
DAC A
DAC B
DAC C
DAC D
5443R10-004
5443R10-004
5443R10-004
5443R10-004
3.3 V
3.3 V
3.3 V
3.3 V
VAA
VAA
VAA
VAA
BAT54S
BAT54S
BAT54S
BAT54S
SOT-23
SOT-23
SOT-23
SOT-23
D9
D7
D8
D9
R11
75.0 "
0805
1%
R2
75.0 "
0805
1%
R7
75.0 "
0805
1%
R11
75.0 "
0805
1%
SD Filter
HD Filter
HD Filter
HD Filter
Conexant
C9
62 pF
0805
5%
C9
62 pF
0805
5%
C9
62 pF
0805
5%
C21
270 pF
0805
5%
33 pF
33 pF
33 pF
22 pF
0805
0805
0805
0805
C8
5%
C8
5%
C8
5%
5%
0.27 µH
0.27 µH
0.27 µH
1.8 µH
1210
1210
1210
1210
5%
5%
5%
5%
L1
L1
L1
L1
C10
75 pF
0805
5%
C10
75 pF
0805
5%
C10
75 pF
0805
5%
C22
330 pF
0805
5%
E.11 Recommended Output Filters for HDTV & SDTV
DOUT
BOUT
COUT
2
2
2
2
Appendix E HDTV Output Mode
CVBS = Composite #1
or HD PB
Y = Luma
or HD Y
C = Chroma
or HD PR
CVBS = Composite #2
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