LA1867NM 데이터 시트보기 (PDF) - SANYO -> Panasonic

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LA1867NM

Car Radio Single-Chip Tuner System

SANYO -> Panasonic 

LA1867NM

MPX Block

1. HCC (high-cut control frequency characteristics (pin 1)

During HCC control, the output signal frequency characteristics are determined by the capacitance of the external

capacitor connected to pin 1.

2. Pilot cancellation adjustment (pins 2 and 3)

The pin 3 pilot cancellation waveform is a 19 kHz signal that does not include a third upper harmonic component, as

shown in the figure above. Also, no capacitor is required between pin 3 and ground since this signal is in phase with

the pilot signal. Good pilot cancellation characteristics can be acquired in the left and right channels by adjusting the

variable resistor, since the signal does not include a third upper harmonic component.

3. Separation adjustment (pin 9)

The separation is adjusted by varying the sub-decoder input level with the pin 9 variable resistor. Only the sub-decoder

level changes when the variable resistor is changed; the mono (main) output level does not change. Also, the decoder

high-band separation in the sub signal frequency band (23 to 53 kHz) will not degraded if the external capacitor C’s

value is made sufficiently smaller than the variable resistor’s impedance.

No. 4619-20/32

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