LC7153 データシートの表示（PDF） - SANYO -> Panasonic

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LC7153

Universal Dual-PLL Frequency Synthesizers

SANYO -> Panasonic 

LC7153, 7153M

Typical Application

A LC7153 or LC7153M cordless telephone application cir-

cuit is shown in figure 5. The telephone is tuned to channel

1, which has a transmit VCO frequency of 46.610MHz

and a receive VCO frequency of 38.975MHz.

Figure 5. American 10-channel, 46/49 MHz, cordless telephone base station

For fref = 5kHz, the divider ratios are as follows.

NA=

fIA

fref

= RX VCO

fref

= 38.975MHz =7795 (1E73H)

5kHz

NB=

fIB

fref

=

TX VCO

fref

=

46.610MHz

5kHz

=9322

(246AH)

NR=

fXIN

2×fref

=

10.24MHz

2×5kHz

1024 (400H)

No.4160–9/11

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