參數(shù)資料
型號: LA7583
廠商: Sanyo Electric Co.,Ltd.
英文描述: IF Signal Processing Circuit (A 2 C PLL VIF + SIF) for TVs and VCRs(用于電視機/VCR應(yīng)用的IF信號處理(自動調(diào)整控制 鎖相環(huán) VIF+SIF)電路)
中文描述: 中頻信號處理電路(2葷鎖相環(huán)資料表格應(yīng)力強度因子)的電視和錄像機(用于電視機/錄像機應(yīng)用的中頻信號處理(自動調(diào)整控制鎖相環(huán)資料表格強度因子)電路)
文件頁數(shù): 9/16頁
文件大?。?/td> 200K
代理商: LA7583
Continued from preceding page.
Pin
No.
10
Symbol
Circuit Configuration
Description
VCOR
Pin 10 is the pin for connecting the resistor
that determines the impedance of the
oscillation point of the oscillating circuit by
the ceramic oscillator. Oscillation frequency
variations can be reduced by connecting a
resistor with a tolerance of 1% between pin
10 and pin 12.
11
AFT OUTPUT
Pin 11 is the AFT output pin. This pin
determines the gain (control sensitivity:
β
(kHz/mV)) according to the R1 and R2
bleeder resistance values.
β
is decreased in
weak electric fields by AGC voltage in order
to reduce malfunction of AFT. R1 and R2
must be 200 k
or less.
AFT curve for medium/
strong electric fields
AFT curve for weak
electric fields
12
VCO2
Pin 12 is the ceramic oscillator (VCO2) pin.
A series resonance-type oscillator is used to
oscillate 1/8 of the IF signal.
Japan = 58.75 MHz
×
1/8
U.S. = 45.75 MHz
×
1/8
Continued on next page.
LA7583
No.5177-9/16
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