AK8813 Datasheet, PDF (18/51 Pages) Asahi Kasei Microsystems – NTSC/PAL Digital Video Encoder

ASAHIKASEI
[AK8813/14]
♦ Chrominance Filter
Chrominance signals (Cb,Cr) before Sub-carrier modulation pass through the 1.3 MHz Low pass filter
shown in Fig.2. Chrominance signal modulated by Sub-carrier passes through the filter shown in Fig.3.
Frequency [MHz]
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5
10
0
-10
-20
-30
-40
-50
-60
-70
Fig. 2 Chroma-1 LPF
Frequency [MHz]
0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.0 13.0
10
0
-10
-20
-30
-40
-50
-60
-70
Fig. 3 Chroma-2 LPF
Rev.00
- 19 -
2004/Oct