1. Pin layout |
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24 |
| 13 |
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| 12 |
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2. Block diagram |
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24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | 15 | 14 | 13 |
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| DRIVER |
| PC | LPF |
| VCO | VCO STOP |
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| FF |
| PACAN |
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| PD | LPF | SCHMIT |
| SEPARATION |
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| ADJ. | SUB |
HPF |
| LPF |
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| MAIN |
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| GATE |
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| DECODER |
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| HCC |
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| TRIG |
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| SNC |
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| AGC |
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| CONTROL |
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1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
3. Pin function |
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Pin | Function | Description |
No. | ||
1 | Noise sense | Noise sensitivity adjustment |
2 | Noise AGC |
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3 | Gate time |
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4 | Signal hold |
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5 | Pilot output |
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6 | Vcc | Vcc=+8.0V |
7 | Capacitor for HCC | High pass filter |
8 | SNC control | Stereo noise controlled voltage |
9 | HCC control | High cut controlled voltage |
10 | Lch output |
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11 | Rch output |
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12 | Pican input | pilot cancel signal input |
13 | Pican output | pilot cancel signal outpt |
14 | Separation ADJ |
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15 | NC |
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16 | NC |
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17 | 456kHz OSC | Ceramic resonator |
18 | Phase comp LPF (+) | Phase comparator low pass filter |
19 | Phase comp LPF | Phase comparator low pass filter |
20 | GND |
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21 | PLL input | Phase locked loop signal input |
22 | Stereo indicator | Active low |
23 | Composite input | Composite signal input |
24 | Pilot det LPF |
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