CX25870/871
Appendix E HDTV Output Mode
Flicker-Free Video Encoder with Ultrascale Technology
E.11 Recommended Output Filters for HDTV & SDTV
Figure E-4. Recommended Low Pass Filter Configuration for each CX25870 DAC for Generation of High Definition and
NTSC/PAL/SECAM TV Outputs
HD Filter C8
33 pF
0805
5%
D9
BAT54S
SOT-23
5443R10-004
CVBS = Composite #1
or HD PB
DAC A
DOUT
BOUT
COUT
2
L1
VAA
3.3 V
R11
0.27 µH
1210
5%
75.0 Ω
0805
1%
C9
C10
75 pF
0805
5%
62 pF
0805
5%
HD Filter
C8
33 pF
0805
5%
D7
BAT54S
SOT-23
5443R10-004
CX25870/871
Y = Luma
or HD Y
DAC B
2
L1
VAA
3.3 V
R2
0.27 µH
1210
5%
75.0 Ω
0805
1%
C9
62 pF
0805
5%
C10
75 pF
0805
5%
HD Filter
C8
33 pF
0805
5%
D8
BAT54S
SOT-23
5443R10-004
C = Chroma
or HD PR
DAC C
2
L1
VAA
3.3 V
R7
0.27 µH
1210
5%
75.0 Ω
0805
1%
C9
C10
75 pF
0805
5%
62 pF
0805
5%
SD Filter 22 pF
0805
5%
D9
BAT54S
SOT-23
5443R10-004
DAC D
2
CVBS = Composite #2
L1
VAA
3.3 V
R11
1.8 µH
1210
5%
75.0 Ω
0805
1%
C21
C22
270 pF
0805
5%
330 pF
0805
5%
NOTE(S):
1. HD Filter imparts a passband of DC to 30 MHz.
2. SD Filter imparts a passband of DC to 8 MHz.
100381_084
100381B
Conexant
E-19
CONEXANT [ CONEXANT SYSTEMS, INC ]
