LA76818 データシートの表示（PDF） - SANYO -> Panasonic

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LA76818

The BUS Control Functions of LA76818 (Tentative)

SANYO -> Panasonic 

Technical Note of LA76818

2002/01/23

PIN 10 (AFT OUTPUT)

This is an AFT output pin. The output is achieved from the collector of the current

mirror circuit. The control sensitivity of AFT can be adjusted by the external resister

(R1, R2). The current mirror circuit doesn’t operate at around center frequency (fo±

35KHz), and the voltage of pin 10 is determined by the external resister (R1, R2). The

control sensitivity of AFT is about 20mV/kHz when R1 = R2 = 100KΩ.

The BUS control is fixed at “L” when IF PLL is unlocked.

R1 100K

1k

10

R2

100K

1000p

From

Lock

Det

The circumference circuit of pin 10

PIN 11 (BUS DATA)

This is a BUS Data input pin.

Vcc

50

600

11

ACK

1.8V

5k

21/ 46

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