Motorola MC13022AP Datasheet

 

  
  

The MC13022A is designed for home 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. Functionally, the MC13022A and
MC13022 are very similar. The MC13022A has 10 dB more audio output and
a CMOS compatible logic level output (Pin 15) for stop sense. The stop
sense/AGC function has been internally connected to the output notch filter
control.

• Operation from 6.0 V to 10 V Supply with Current Drain of 20 mA Typ

• IF Amplifier with Two Speed AGC

• Post Detection Filters that Allow Automatic Adjustable Audio Bandwidth

Control and Notch Filtering (9.0 or 10 kHz)

• Signal Quality Controlled Stereo Blend and Noise Reduction

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

• Signal Strength Indicator Output for Stop Sense and/or Meter Drive

• Signal Strength Controlled IF and Audio Bandwidth

• Noise Immune Pilot Detector Needs no Precision Filter Components

• MC13025 Complementary Electronically Tuned Radio Front End

• CMOS Compatible Driver for Stop Sense

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

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

θ

,

Left Audio

Right Audio

Pilot Lamp

Signal
Strength
Control of
Audio Filters

CMOS
(Logic)

450 kHz

Low–Level

IF

IF Amp

AGC

IF

Decoder

I

Q

Y es/No

Level

Fast AGC Control

Pilot

Detector

Signal

Quality

Detector

L
R

Blend, COS

Post Det

Filter

Fast–Lock

Conrol

Order this document by MC13022A/D



C–QUAM ADVANCED

MEDIUM VOLTAGE

AM STEREO DECODER

SEMICONDUCTOR

TECHNICAL DATA

28

28

Env Det

Decoder Input

AGC

IF Input

Filtered Left Out

Left Notch In

Feedback

Unfiltered L

Unfiltered R

Feedback

Right Notch In

Filtered Right Out

ORDERING INFORMATION

Device

MC13022AP
MC13022ADW

1

1

PIN CONNECTIONS

128
2

Ref

3
4
5

SS

6
722
8
9

10

out

11

out

12
13
14

Temperature Range

TA = – 40° to +85°C

PLASTIC PACKAGE

PLASTIC PACKAGE

(Top View)

Operating

P SUFFIX

CASE 710

DW SUFFIX

CASE 751F

(SO–28L)

I Det

27

L–R Det

26

Q Out

25

V

CC

24

Loop Filter

23

Blend
GND

21

Stereo Lamp

20

Osc Feedback

19

Osc In

18

Pilot Det In

17

I Pilot

16

Q Pilot

15

CMOS SS Out

Package

Plastic Power

SO–28L

This document contains information on a new product. Specifications and information herein
are subject to change without notice.

MOTOROLA ANALOG IC DEVICE DATA

 Motorola, Inc. 1996 Rev 1

1

MC13022A

MAXIMUM RATINGS

Rating Symbol Value Unit

Power Supply Input Voltage V
Stereo Indicator Lamp Current (Pin 21) – 30 mAdc
Operating Ambient Temperature T
Storage Temperature Range T
Operating Junction Temperature T
Power Dissipation

Derate above 25°C

NOTE: ESD data available upon request.

CC

A

stg

J(max)

P

D

12 Vdc

–40 to +85 °C

–65 to +150 °C

150 °C

1.25
10

mW/°C

W

ELECTRICAL CHARACTERISTICS (V

Characteristic

Power Supply Operating Range 6.0 8.0 10 Vdc
Supply Line Current Drain (Pin 25) 10 20 25 mAdc
Minimum Input Signal Level, Unmodulated for Full Operation (Pin 5) – 5.0 – mVrms
Audio Output Level, 50% Modulation, L only or R only (Pins 10, 11) 290 400 530 mVrms

Stereo

Audio Output Level, 50% Modulation (Pins 10, 11) 140 200 265 mVrms

Monaural

Output THD, 50% Modulation %

Monaural – 0.3 0.8
Stereo – 0.5 1.6

Channel Separation, L only or R only, 50% Modulation 22 35 – dB

Stereo
Pilot Acquisition Time Following Blend Reset to 0.3 Vdc – – 600 ms
Audio Output Impedance at 1.0 kHz (Pins 7, 14) – 300 – Ω
Stereo Indicator Lamp Pin

Saturation Voltage at 3.0 mA Load Current (V
Stereo Indicator Lamp Pin

Leakage Current (Pin 21)
Oscillator Capture Range – ±3.0 – kHz

= 8.0 V, TA = 25°C, Test Circuit of Figure NO TAG, unless otherwise noted.)

CC

Min Typ Max Unit

– – 200 mVdc

– – 1.0 µAdc

sat

Pin 21)

2

MOTOROLA ANALOG IC DEVICE DATA

MC13022A

Figure 1. T est Circuit

From

Tuning System

V

CC

LED

3.0 k

Osc
Fbk

.001

3.9 k

T1

OscInPilot Det

VCO

51

Input

0.33+0.68

10 µF

+

PilotIPilot

Pilot

Detector

0.47

2.2 k

0.001

0.001

I

Det

L–R

DetQOut

28 27 26 25 24 23 22 21 20 19 18 17 15

Decoder

0.001

V

CC

µ

F 20 µF

47

+

Loop

Blend Gnd

Filt

+

Signal

Quality

Detector

Stereo

Lamp

Logic V

CC

(5.0 V)

47 k

T o CMOS

Logic

Stop

Q

16

Sense

Gain–Controlled L–R
Envelope L+R

Signal

IF

Input

0.01

Strength
Output

0.01

10 k

IF Out

3.0 V

12 345 67 891011121314

Env

Decoder

Det

Input

0.001 10

Ref AGC

13 k

L2

1.0 mH

120

+

10 µF

NOTES: 1. Q1 is switched on when the Blend Pin 23 is externally held low and the signal is weak or has 110%

2.Q2 (Pin 15) is switched on when Pin 6 voltage is below 1.7 V . Q2 could then be used as a logic output

3.User is cautioned not to require more than 1.0 mA from Pin 6.

IF/AGC

+

µ

F

100 k

negative modulation. In this condition Q1 pulls Pin 6 low (0.25 to 1.3 V). At all other times, Pin 6 follows
the curve in Figure NO TAG.

to the tuning system, telling the tuning system to continue searching for a good signal.

1.0 k

Stop Sense,

SS Meter

Q1

Buffer

Filtered

Left

Output

Filter Amp

43 k

21.5 k

370 370

T1 – Ceramic Resonator muRata

T1 – CSA 3.60 MGF103

L2 – Miller 9230–92

740

43 k

L Output

Matrix

R Output

Filter Amp

740

43 k 43 k

21.5 k

370 370

1.7 V

ref

Buffer

Q2

Filtered

Right

Output

MOTOROLA ANALOG IC DEVICE DATA

3