LA1844M Просмотр технического описания (PDF) - SANYO -> Panasonic

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Компоненты Описание

производитель

LA1844M

For Home Stereo Single-chip Tuner IC

SANYO -> Panasonic 

Continued from preceding page.

Pin No.

Function

12 Pilot detector

low-pass filter

(Forced mono)

(VCO stop)

Pin voltage

(V)

VCC-1.0

LA1844,LA1844M

Equivalent circuit

Notes

The device is forced to monaural when a current of

over 50μA flows from this pin.

The VCO is stopped when a current of over 200μA

flows from this pin.

13 L outputs

3.2

14 R outputs

Output impedance RO = 3.3kΩ

15 Pilot canceler

output

Vreg

16 Decoder input

Vreg

Inverting input pin

RNF = 20kΩ

17 PLL input

Vreg

Input impedance Ri = 20kΩ

18 FM demodulator

output

Vreg+0.7

19 AM detector

output

0 (FM)

1.5 (AM)

20 S meter,

AM AGC

0.2 (FM)

0.9 (AM)

Output impedance RO = 2.3kΩ

The channel separation can be adjusted with an

external capacitor connected between this pin and

ground.

Output impedance RO = 3.3kΩ

The resistance of the built-in resistor R is 13.9kΩ

The SD responce during seek operation is

determined with the external capacitor connected

to this pin.

Continued on next page.

No.7930A-7/11

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