LA3450 View Datasheet(PDF) - SANYO -> Panasonic

Part Name

Description

Manufacturer

LA3450

PLL FM MPX Stereo Demodulator with Adjustment-Free VCO and Measure Against Adjacent Channel Interference

SANYO -> Panasonic 

LA3450

Description of External Parts

Name

Capacitor

Resistor

Semifixed

resistor

Resonator

Diode

Coil

Symbol

Kind

C1

Ceramic

C2

Polyester film

C3

Electrolytic

Value

100 to 1000pF

(Note1)

0.047µF

0.1 to 0.47µF

C4

Electrolytic

0.47µF to 1µF

C5

Electrolytic

C6

Electrolytic

C7

Polyester film

C8

Polyester film

C9

Electrolytic

C10

Electrolytic

C11 to 12 Ceramic

1µF

1µF

0.01µF

0.01µF

0.47µF

0.47µF

510pF

C13

Electrolytic

C14

Electrolytic

C15

Electrolytic

C16

Electrolytic

C17 to 18 Electrolytic

C19

Ceramic

C20 to 21 Ceramic

C22

Ceramic

R1

Carbon

10µF

33µF

100µF

100µF

10µF

1000pF

100pF

4700pF

3.3 to 6.8kΩ

R2

Carbon

R3

Carbon

R4 to 5 Carbon

R6 to 7 Carbon

R8 to 9 Carbon

R10 to 11 Carbon

R12

Carbon

R13

Carbon

VR1

Carbon

VR2 to 3 Carbon

X

Ceramic

D1

Silicon (Low leak)

L1

10kΩ

1kΩ

100kΩ

100kΩ

3.3kΩ

3.3kΩ

2kΩ

10kΩ

30kΩ

1MΩ

15mH

Remarks

Inprovement in stereo low-frequency distortion

DC cut

Loop filter, Input pilot 8mV or greater : 0.1µF

14mV or greater : 0.22µF

20mV or greater : 0.47µF

Loop filter, Input pilot 8mV or greater : 0.47µF

14mV or greater : 1µF

Sync detection filter

Sync detection filter

For integration (generation of triangular wave)

DC cut

For integration (generation of triangular wave)

DC cut

De-emphasis capacitor, R5. C11=50µs (75µs)

R4. C12=50µs (75µs)

DC cut

DC cut

Filter, S/N improvement

Power filter

DC cut

LPF for sub signal attenuation

Improvement in separation at high frequencies (Note 2)

19kHz tank circuit (generation of sine wave)

Loop filter, Input pilot 8mV or greater : 6.8kΩ

14mV or greater : 3.3kΩ

Fixing of cal-tone OSC frequency

Limiting resistor

Post amplifiler feedbak resistor, de-emphasis resistor

For separation adjustment

LPF input resistor (Note 3)

LPF output resistor

LPF for sub signal attenuation

Generation of pilot cancel signal

Pilot cancel adjustment

Separation adjustment

CSB456F11 (Murata), KBR-457HS (Kyocera)

Improvement in stereo start time after VCO stop release

19kHz tank circuit (generation of sine wave)

Note 1 : C1 differs with set models. Capacitor used to phase the sub signal of the decoder with the reproduction sub signal

in the PLL.

Note 2 : C20 to 21 are set to the optimum value according to each set mode.

Note 3 : The LPF input resistor value is 3.3kΩ or greater.

No.2393–7/15

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