AN2458 View Datasheet(PDF) - Panasonic Corporation
Part Name
Description
Manufacturer
AN2458 Datasheet PDF : 3 Pages
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s Application Circuit
VREF
(typ.1.8V)
BLK (BLan King) IN
BF (Burst Flag) IN
CP2 (Clamp Pulse) IN
R–Ysig.IN
B–Ysig.IN
SC90˚IN
SC0˚IN
27kΩ
47µF +
16.3V
10kB
1kΩ
10kΩ
HUE
50kB
6400Ω
0.047
µF
0.22µF
24 23 22 21 20 19 18 17 16 15 14 13
AN2458SH
1 2 3 4 5 6 7 8 9 10 11 12
22µH
+
VCC
100µF 16.3V (typ.4.8V)
0.22µF
6800Ω
0.001
1500Ω µF
10kΩ 10kB
6400Ω
1
kΩ
27kΩ
*10pF 1kΩ
22
22
kΩ
kΩ
6800Ω
0.001
µF
1500Ω
50kB
50kB
90.Adj.
Burst
Level
Chroma
Level
1kΩ
BPF 1kΩ
* The phase-shift capacitor is typically
10 pF for both NTSC and PAL.
CHROMA
OUT
s Pin Descriptions
Pin No.
Pin name
1 Color difference (B–Y) input
2 GND
3 N. C.
4 Subcarrier (0˚) OFF
5 Subcarrier(0˚) input
6 90˚adjustment
7 Phase-shift capacitor
8 Phase-shift capacitor
9 Burst amplitude adjustment
10 N. C.
11 Chroma plus burst output
12 Phase-shift resistors
Pin No.
Pin name
13 Clamp pulse input
14 VCC (4.8V typ.)
15 N. C.
16 Blanking pulse input
17 DC playback capacitor
18 Burst flag input
19 Phase adjustment
20 Subcarrier (90˚/270˚) input
21 Subcarrier (90˚/270˚) OFF
22 N. C.
23 Color difference (R–Y) input
24 VREF (1.8V typ.)
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