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參數資料

型號：	LA7945N
元件分類：	消費家電
英文描述：	SPECIALTY CONSUMER CIRCUIT, PDIP22
封裝：	SDIP-22
文件頁數：	7/9頁
文件大小：	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

相關PDF資料	PDF描述
LA7950	SPECIALTY CONSUMER CIRCUIT, SIP10
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LA7953	2 CHANNEL(S), TONE CONTROL CIRCUIT, PDIP30
LA7953	2 CHANNEL(S), TONE CONTROL CIRCUIT, PDIP30
LA79600GP	SPECIALTY CONSUMER CIRCUIT, QCC24

相關代理商/技術參數	參數描述
LA7950	制造商:Panasonic Industrial Company 功能描述:IC- LINEAR
LA79500E	制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:For TV 6-input, 3-output Switch
LA79500E-TBM-E	制造商:ON Semiconductor 功能描述:
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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