LA3401 Ver la hoja de datos (PDF) - SANYO -> Panasonic

Número de pieza

componentes Descripción

Fabricante

LA3401

VCO Non-Adjusting PLL FM MPX Stereo Demodulator with FM Accessories

SANYO -> Panasonic 

LA3401

Continued from preceding page.

Part No.

Voltage [V]

16

2.7

17

2.7

18

2.7

19

2.7

20

2.7

21

–

22

VCC

Pin Name

Pilot sync detect filter

Pilot sync detect filter, VCO stop

PLL input

Loop filte0r

Loop filter

OSC

Power supplu

Remarks

– 4.2V

– 2.5V

Note for Using IC

1. Ceramic resonator

(1) Shown below are ceramic resonators recommended for use in the LA3401.

Type No.

Supplier

CSB456F11 Murata

KBR-457HS Kyocera

(2) By externally connecting a capacitor in parallel with a ceramic resonator, ceramic resonators shown below can be

also used.

Ceramic resonator

Parallec external capacitor

CSB456F10 (Murata)

20pF

KBR-457HS1 (Kyocera)

15pF

2. Capture range and PLL loop filter constants

(1) It is desirable that the capture range, which is related to the stereo distortion, should be set in the range where the

capture range does not depend on the pilot level. For example, when the PLL loop filter constants are C9=0.22µF,

C10=1µF, R11=3.3kΩ, the capture range characteristic becomes as shown in Fig. 1. For these loop filter constants,

it is desirable that the input pilot level should be approximately 20mV or greater where the capture range does not

depend on the pilot level. Figs. 2, 3 shows how the capture range characteristic changes with the loop filter con-

stants.

No.1868–6/15

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