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MC13022

C–QUAM ADVANCED MEDIUM VOLTAGE AM STEREO DECODER

Motorola => Freescale 

Order this document by MC13022/D

MC13022

Advanced Medium Voltage

AM Stereo Decoder

The MC13022 is designed for home, portable and automotive AM stereo

radio applications. The circuits and functions included in the design allow

implementation of a full–featured C–QUAM® AM stereo radio with relatively

few, inexpensive external parts. It is available in either 28–lead DIP or EIAJ

compatible wide–bodied 28–lead SOIC.

• Operation from 4.0 V to 10 V Supply with Current Drain of 18 mA Typ

• IF Amplifier with Two Speed AGC

• Post Detection Filters that Allow Manual or Automatic Adjustable Audio

Bandwidth Control and 9.0 or 10 kHz Notch Filtering

• Signal Quality Controlled Stereo Blend and Noise Reduction

• Noise and Co–Channel Discriminating Stop–On–Station

• Signal Strength Indicator Output for RF AGC and/or Meter Drive

• Signal Strength Controlled IF and Audio Bandwidth

• Noise Immune Pilot Detector Needs no Precision Filter Components

• MC13023 Complementary Tuning System IC

C–QUAM is a registered trademark of Motorola, Inc.

The purchase of the Motorola C–QUAM® AM Stereo Decoder does not carry with such pur-

chase any license by implication, estoppel or otherwise, under any patent rights of Motorola

or others covering any combination of this decoder with other elements including use in a

radio receiver. Upon application by an interested party, licenses are available from Motorola

on its patents applicable to AM Stereo radio receivers.

Simplified Application

450 kHz

Low–Level

IF

IF Amp

AGC

IF

Decoder

I

Q

Pilot

Detector

Yes/No

L

Post Det

R

Filter

Blend, COSθ,

Fast–Lock

Conrol

Left Audio

Right Audio

Pilot Lamp

C–QUAM ADVANCED

MEDIUM VOLTAGE

AM STEREO DECODER

SEMICONDUCTOR

TECHNICAL DATA

28

1

P SUFFIX

PLASTIC PACKAGE

CASE 710

28

1

DW SUFFIX

PLASTIC PACKAGE

CASE 751F

(SO–28L)

PIN CONNECTIONS

Env Det 1

Decoder Input 2

Ref 3

AGC 4

IF Input 5

SS RF AGC 6

Filtered Left Out 7

Left Notch In 8

Feedback 9

Unfiltered Lout 10

Unfiltered Rout 11

Feedback 12

Right Notch In 13

Filtered Right Out 14

28 I Det

27 L–R Det

26 Q Out

25 VCC

24 Loop Filter

23 Blend

22 GND

21 Stereo Lamp

20 Osc Feedback

19 Osc In

18 Pilot Det In

17 I Pilot

16 Q Pilot

15 Filter Control

(Top View)

Signal

Level

Quality

Detector

Fast AGC Control

MOTOROLA ANALOG IC DEVICE DATA

Stop Sense/

RF AGC/

Meter DRive

ORDERING INFORMATION

Device

Operating

Temperature Range Package

MC13022P

Plastic Power

MC13022DW TA = – 40° to +85°C SO–28L

© Motorola, Inc. 1996

Rev 1

1

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