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參數資料

LA3370

No.619-6/11

(4) SNC and HCC connection circuits when coupled with the IF stage.

Fig. 1 shows sample S/N characteristics via antenna inputs when SNC and HCC are connected with the IF stage by an

external circuit.

(5) S/N improvements in region C of Fig.1

Because S/N ratios deteriorate even further in the region C of Fig. 1, it is better to improve the S/N in this region with

IF mutings. The LA1140 is available to linearly vary the IF muting. Employment of the LA3370 together with the

LA1140 further enhances S/N improvement.

(6) Using the HCC terminal for muting

Muting in the neighborhood of 37dB are feasible by utilizing HCC functions as muting functions when used in home

stereos and no need exists to suppress treble noises. Fade-in and fade-out of mutings, permitting delightful, shock-noise-

free muting are possible by providing a time constant to the pin 7 control.

(7) VCO damping

VCO oscillations can be damped by applying a voltage not less than 7V to the HCC terminal (pin 7) to enter a monaural

mode. At this time, both SNC and HCC are in an off mode. Fig. 9 shows flow-in current by voltages applied to pin 7.

(8) Separation control terminal

Separation is controlled by controlling the main signal level.

The controllable separation (ratio of sub signal to main signal) range of the input composite signal is approximately as

follows :

Sub signal level

m =

Main signal level

(at peak level)

0.7 < m < 1.25

(9) For the application of LA1140+LA3370 and its characteristics, refer to the catalog of the LA1140 (No. EN729).

相關PDF資料	PDF描述
LA3373	FM, AUDIO DEMODULATOR, PDIP16
LA3375	SPECIALTY CONSUMER CIRCUIT, PZIP16
LA3376	SPECIALTY CONSUMER CIRCUIT, PZIP16
LA3401	AM/FM, AUDIO DEMODULATOR, PDIP22
LA3410	FM, AUDIO DEMODULATOR, PDIP16

相關代理商/技術參數	參數描述
LA3370-E	制造商:Sony Semiconductor Solutions Division 功能描述:
LA3373	制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:PLL MULTIPLEX STEREO DEMODULATOR
LA3375	制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Pilot Cancel-Provided PLL FM MPX Demodulator for Car Stereos
LA3376	制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Pilot Cancel-Provided PLL FM MPX Demodulator for Car Stereos
LA3376M	制造商:未知廠家制造商全稱:未知廠家功能描述:Consumer IC

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