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參數(shù)資料
| 型號(hào)： | LA7945N |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PDIP22 |
| 封裝： | SDIP-22 |
| 文件頁數(shù)： | 7/9頁 |
| 文件大?。?/td> | 150K |
| 代理商： | LA7945N |
LA7945N
No.4616–7/9
Pin 14 (AFC2) : Used for phase adjustment of the internal VCO CLOCK and CLK-RUN-IN
A signal is output from pin 14 only during the 21H CLK-RUN-IN period,
and the phase is adjusted by controlling the fixed current determined by the
15k
resistor on pin 12 only during that period.
Figure 6 : Pin 14 (AFC2) and Pin 15 (CLOCK PHASE) Peripheral Circuit
Pin 15 (CLOCK PHASE) : CLOCK-RUN-IN phase compensation pin.
Only the CLK-RUN-IN signal during the vertical retrace period is extracted
and passed to the multiplier described above. The phase of the clock output
from pin 5 can be adjusted by the value of the capacitor (C1) connected to
this pin.
Pin 17 (VIDEO IN) : The video input pin. (sync-white 1 Vp-p)
Pin 17 is designed to clamp the pedestal level at 1/2 VCC. Since C1 also
functions as the clamping capacitor, it should be driven with a low imped-
ance (less than 500
). The low field performance can be improved by add-
ing an LPF such as R1 and C2. If this LPF is used, R1 must be a low resis-
tance that can meet the conditions described above.
Figure 7 : Pin 17 (VIDEO IN) Peripheral Circuit
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| LA7950 | 制造商:Panasonic Industrial Company 功能描述:IC- LINEAR |
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| LA7951 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Video Switch for TV/VCR Use |
| LA7952 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Video Switch for TV/VCR Use |
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