KA22241 View Datasheet(PDF) - Contek Microelectronics

Part Name

Description

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KA22241

I-CHIP AM/FM RADIO IC

Contek Microelectronics 

KA22427

LINEAR INTEGRATED CIRCUIT

I-CHIP AM/FM RADIO IC

DESCRIPTION

Contek KA22427 is a one-chip AM/FM radio integrated circuit

that is suitable for portable radio applications. It includes AM

amplifier, local OSC, AM mixer, AM/FM amplifier, AM AGE,

FM AGE circuit and also class b Audio Power Amplifier.

FEATURES

*Low external components count.

*Wide operating voltage : 3 - 13 V.

*Internal regulated supply for constant current operation.

*DC selection of AM/FM mode.

BLOCK DIAGRAM

AM IF OUT

4

AM/FM IN

HF GND

IF bypass

321

AGC

bypass

16

AM/FM

OUT

15

IF Detector IN

14

+Vcc

13

AM HF MIXER

AM/FM IF

AM/FM

discriminato

Regulator

DIP-16

AM LO

Audio

amplifier

56

7

AM local

OSC

AM HF IN

HF bypass

8 9 10

Audio Audio in Ripple

detector

Suppression

out

11 12

Audio GND

Audio power

out

ABSOLUTE MAXIMUM RATING(Ta=25 C)

PARAMETER

SYMBOL

SUPPLY VOLTAGE

VCC

SUPPLY CURRENT

ICC

POWER DISSIPATION

PD

THERMAL RESISTANCE

RJ-A

OPERATING TEMPERATURE

TOPX

STORAGE TEMPERATURE

TSTG

NOTE:Ta>25 C, DERATE WITH 10mW/ C UNLESS SPECIFIED.

VALUE

11

44

600

100

-18~65

-40~125

UNIT

V

mA

mW

C/W

C

C

Contek Microelectronics Co.,Ltd.

1

CONTEK

http://www.contek-ic.com E-mail:sales@contek-ic.com

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