KA22901 Просмотр технического описания (PDF) - Samsung

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KA22901

AM/FM TUNER + MPX

Samsung 

KA22901

AM/FM TUNER + MPX

INTRODUCTION

The KA22901 is a monolithic intergrated circuit which consists of

one chip tuner and no adjustment FM multiplex for AM/FM ra-

dios and headphone radios.

FEATURES

• One chip tuner with built - in FM Multiplex

• No adjustment for FM detector and VCO.

• No AM detect coil, IF coupling capacitor, FM IF bypass

capacitor needed.

• Built-in AM/FM selection switch.

• Minimum number of external parts required.

• Wide operating voltage range : VCC = 1.8V ~ 7V

• Low distortion (FM IF : 0.4%, AM IF : 1%, 0.2% (Typ) ).

24-SDIP-300

24-SOP-375

BLOCK DIAGRAM

ORDERING INFORMATION

Device

Package Operating Temperature

KA22901 24-SDIP-300

-20 °C ~ +75°C

KA22901D 24-SOP-375

AM RF IN

RF Vcc FM OSC AM OSC

MPX IN PH1

FM RF OUT

DET OUT

24 23 22 21 20 19 18 17

PH2

OSC L-CH OUT

R-CH OUT

16 15 14 13

AM F/E

FM F/E

AF

BUFFER

OSC

PHASE

DETECTOR

FF

AM/FM DET

STEREO

DECODER

LAMP

TRUGGER

AGC

AM

FM

IF

IF

LED DRIVER

1 2 3 4 5 6 7 8 9 10 11 12

FM RF IN GND FM MIX AM MIX AGC Vcc AM IF FM IF GND TUNING LED ST LED QUAD DET

Fig. 1

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