MC13022 [MOTOROLA]
C-QUAM ADVANCED MEDIUM VOLTAGE AM STEREO DECODER; C-华富先进的中电压AM立体声解码器
| 型号： | MC13022 |
| 厂家： | 
MOTOROLA |
| 描述： | C-QUAM ADVANCED MEDIUM VOLTAGE AM STEREO DECODER |
| 文件： | 总8页 (文件大小：177K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Order this document by MC13022A/D
C–QUAM ADVANCED
MEDIUM VOLTAGE
AM STEREO DECODER
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.
SEMICONDUCTOR
TECHNICAL DATA
• 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
P SUFFIX
PLASTIC PACKAGE
Control and Notch Filtering (9.0 or 10 kHz)
28
• 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
CASE 710
1
DW SUFFIX
PLASTIC PACKAGE
CASE 751F
28
(SO–28L)
1
C–QUAM is a registered trademark of Motorola, Inc.
PIN CONNECTIONS
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.
I Det
28
1
2
Env Det
Decoder Input
Ref
27 L–R Det
26 Q Out
3
AGC
4
25 V
CC
IF Input
SS
5
24 Loop Filter
Simplified Application
6
23 Blend
GND
22
7
Filtered Left Out
Left Notch In
Feedback
Left Audio
8
21 Stereo Lamp
20 Osc Feedback
19 Osc In
IF
L
Post Det
Filter
IF Amp
AGC
Decoder
9
R
450 kHz
Low–Level
IF
Right Audio
Unfiltered L
Unfiltered R
10
11
out
I
18 Pilot Det In
17 I Pilot
Blend, COSθ,
out
Q
Fast–Lock
Conrol
Feedback 12
Right Notch In 13
16 Q Pilot
Pilot
Detector
Filtered Right Out 14
15
CMOS SS Out
Pilot Lamp
(Top View)
Yes/No
Signal
Strength
Control of
Audio Filters
ORDERING INFORMATION
Operating
Signal
Quality
Detector
Level
Temperature Range
Device
Package
CMOS
(Logic)
MC13022AP
Plastic Power
SO–28L
Fast AGC Control
T
A
= – 40° to +85°C
MC13022ADW
This document contains information on a new product. Specifications and information herein
are subject to change without notice.
Motorola, Inc. 1996
Rev 1
MC13022A
MAXIMUM RATINGS
Rating
Symbol
Value
12
Unit
Vdc
mAdc
°C
Power Supply Input Voltage
V
CC
Stereo Indicator Lamp Current (Pin 21)
Operating Ambient Temperature
Storage Temperature Range
–
30
T
A
–40 to +85
–65 to +150
150
T
stg
°C
Operating Junction Temperature
T
°C
J(max)
Power Dissipation
Derate above 25°C
P
D
1.25
10
W
mW/°C
NOTE: ESD data available upon request.
ELECTRICAL CHARACTERISTICS (V
= 8.0 V, T = 25°C, Test Circuit of Figure NO TAG, unless otherwise noted.)
A
CC
Characteristic
Min
Typ
Max
Unit
Power Supply Operating Range
6.0
10
–
8.0
20
10
25
–
Vdc
Supply Line Current Drain (Pin 25)
mAdc
mVrms
mVrms
Minimum Input Signal Level, Unmodulated for Full Operation (Pin 5)
5.0
400
Audio Output Level, 50% Modulation, L only or R only (Pins 10, 11)
Stereo
290
530
Audio Output Level, 50% Modulation (Pins 10, 11)
Monaural
140
200
265
mVrms
%
Output THD, 50% Modulation
Monaural
Stereo
–
–
0.3
0.5
0.8
1.6
Channel Separation, L only or R only, 50% Modulation
Stereo
22
35
–
dB
Pilot Acquisition Time Following Blend Reset to 0.3 Vdc
Audio Output Impedance at 1.0 kHz (Pins 7, 14)
Stereo Indicator Lamp Pin
–
–
–
–
300
–
600
–
ms
Ω
200
mVdc
Saturation Voltage at 3.0 mA Load Current (V
Pin 21)
sat
Stereo Indicator Lamp Pin
Leakage Current (Pin 21)
–
–
–
1.0
–
µAdc
Oscillator Capture Range
±3.0
kHz
2
MOTOROLA ANALOG IC DEVICE DATA
MC13022A
Figure 1. Test Circuit
From
Tuning System
Logic V
CC
(5.0 V)
V
CC
+
3.0 k
2.2 k
0.33
0.68
47 k
.001
51
3.9 k
T1
0.001
To CMOS
Logic
0.001
0.001
47
µ
F
20 µF
LED
10
µ
F
0.47
Pilot
Q
+
+
+
L–R
Det
Q
Out
Loop
Filt
Stereo
Lamp
Osc
Fbk
Osc
In
Pilot Det
Input
Pilot
I
Stop
Sense
I
V
Blend
23
Gnd
22
Det
CC
28
27
26
25
24
21
20
19
18
17
16
15
Signal
Quality
Pilot
Detector
Detector
VCO
Decoder
Gain–Controlled L–R
Envelope L+R
Q2
Matrix
Signal
Strength
Output
1.0 k
1.7 V
13
Q1
ref
IF Out
Filter Amp
10
Filter Amp
12
IF/AGC
Buffer
Buffer
14
3.0 V
1
2
3
4
5
6
7
8
9
11
Env
Det
Decoder
Input
Ref
AGC
740
43 k
+
13 k
0.01
740
0.001
10 µF
43 k
43 k
10 k
43 k
L2
21.5 k
21.5 k
370
Filtered
Left
Output
Filtered
Right
Output
1.0 mH
IF
Input
370
370
370
100 k
120
L Output
R Output
+
10 µF
0.01
Stop Sense,
SS Meter
T1 – Ceramic Resonator muRata
T1 – CSA 3.60 MGF103
L2 – Miller 9230–92
NOTES: 1. Q1 is switched on when the Blend Pin 23 is externally held low and the signal is weak or has 110%
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.
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
to the tuning system, telling the tuning system to continue searching for a good signal.
3. User is cautioned not to require more than 1.0 mA from Pin 6.
3
MOTOROLA ANALOG IC DEVICE DATA
MC13022A
EXPLANATION OF FEATURES
Blend and Noise Reduction
the frequency synthesizer to immediately scan to the next
channel. The interference detection prevents stopping on
many unlistenable stations, a feature particularly useful at
night when many frequencies may have strong signals from
multiple co–channel stations. Pin 6 drives a comparator
which has a 1.7 V reference. Therefore the comparator
output, Pin 15, is low if Pin 6 is <1.7 V and high if Pin 6 is
>1.7 V.
Although AM stereo does not have the extreme difference
in S/N between mono and stereo that FM does (typically less
than 3.0 dB versus greater than 20 dB for FM), sudden
switching between mono and stereo is quite apparent. Some
forms of interference such as co–channel have a large L–R
component that makes them more annoying than would
ordinarily be expected for the measured level. The
MC13022A measures the interference level and reduces
L–R as interference increases, blending smoothly to
monaural. The pilot indicator remains on as long as a pilot
signal is detected, even when interference is severe, to
minimize annoying pilot light flickering.
IF Bandwidth Control
IF AGC attenuates the signal by shunting the signal at the
IF input. This widens the IF bandwidth by decreasing the
loaded Q of the input coupling coil as signal strength
increases.
Signal Strength
Post Detection Filtering
A dc voltage proportional to the log of signal strength is
provided at Pin 6. This can be used for signal strength
indication, and it directly controls the post detection filter.
Normal operation is above 2.2 V as shown is Figure NO TAG.
With weak, noisy signals, high frequency rolloff greatly
improves the sound. Conventional tone controls do not
attenuate the highs sufficiently to control noise without also
significantly affecting the mid–range. Also, notch filters are
necessary with any wide–band AM radio to eliminate the
10 kHz whistle from adjacent stations.
By using a twin–T filter with variable feedback to the
normally grounded center leg, a variable Q notch filter is
formed that provides both the 10 kHz notch and variable high
frequency rolloff functions. Typical range of response is
shown in Figure NO TAG. Response is controlled by Pin 6 for
automatic audio bandwidth control as a function of signal
strength.
Stop Sense
The signal strength information is multiplexed with the stop
sense signal. The stop sense is activated when scanning by
externally pulling the blend, Pin 23, below 0.3 V. This would
typically be done from the mute line in a frequency
synthesizer.
If at any time Pin 23 is low and there is either no signal in
the IF or a noisy signal of a predetermined interference
level, Pins 6 and 15 will go low. This low can be used to tell
4
MOTOROLA ANALOG IC DEVICE DATA
MC13022A
Figure 2. High Performance Home Type AM Stereo Receiver
From
Mute Line
Logic V
(5.0 V)
CC
V
CC
TOKO Part No.
MF292BC–1349Z
.001
3.9 k
T1
To
Tuning
System
51
28
I
Det
27
L–R
Det
26
Q
Out
25
24
Loop
Filter
23
Blend
22
GND
21
Stereo
Lamp
19
Osc
In
18
17
I
Pilot
16
Q
15
CMOS
20
Osc
Feedbk
V
Pilot
Det
In
CC
Pilot SS Out
MC13022A
Env
Det
1
Decoder
Input
2
IF
Input
5
Left Notch
Right Notch
In
13
Unfiltered
R
10
Ref
3
AGC
4
SS
6
Out
7
In
8
FBK
9
L
FBK
12
Out
14
out
out
11
T2
To
Signal
Strength
Meter
450 kHz
IF
See
MC13025
Data Sheet
for
TOKO Part No.
THB–122
Alternate
Approach
Tuning Line
From Synthesizer
T1 – Ceramic Resonator muRata
T1 – CSA 3.60 MGF103
T2 – Broad Resonance @ 450 kHz
T2 – Effective R of 8.0 k to 12 k
P
T2 – (TOKO 7NRES–T13704)
Mixer
Oscillator
Figure 3. Overall Selectivity of a Typical Receiver
versus Filter Control Voltage
Figure 4. Strength Output versus Input Signal
Signal
Input
0
5
2
3
6
5.0
SS Meter
0.01
–10
10 k
100 k
0.01
V
= 3.5 Vdc
Pin 6
–20
–30
–40
–50
Z
= 13 k
2.5 Vdc
1.5 Vdc
o
4.0
3.0
2.0
– – Response at
– – Pins 10 and 11 Due
– – to IF Selectivity
– – Total Response at
– – Output Pins 7 and 14
–60
–70
–80
1.5
2.0
3.0 4.0 5.0 6.0 8.0 10
AUDIO FREQUENCY (kHz)
15
20
30
1.0
3.0
10
30
100
300
1.0 k
SIGNAL INPUT, 10 k
Ω TO PIN 5 (mVrms)
5
MOTOROLA ANALOG IC DEVICE DATA
MC13022A
OUTLINE DIMENSIONS
P SUFFIX
PLASTIC PACKAGE
CASE 710–02
ISSUE B
NOTES:
1. POSITIONAL TOLERANCE OF LEADS (D), SHALL
BE WITHIN 0.25 (0.010) AT MAXIMUM MATERIAL
CONDITION, IN RELATION TO SEATING PLANE
AND EACH OTHER.
2. DIMENSION L TO CENTER OF LEADS WHEN
FORMED PARALLEL.
28
1
15
14
3. DIMENSION B DOES NOT INCLUDE MOLD FLASH.
B
MILLIMETERS
INCHES
DIM
A
B
C
D
F
MIN
36.45
13.72
3.94
0.36
1.02
MAX
37.21
14.22
5.08
0.56
1.52
MIN
MAX
1.465
0.560
0.200
0.022
0.060
1.435
0.540
0.155
0.014
0.040
L
C
A
N
G
H
J
K
L
2.54 BSC
0.100 BSC
1.65
0.20
2.92
2.16
0.38
3.43
0.065
0.008
0.115
0.085
0.015
0.135
J
G
H
F
M
K
15.24 BSC
0.600 BSC
D
SEATING
PLANE
M
N
0
0.51
15
1.02
0
15
0.040
0.020
DW SUFFIX
PLASTIC PACKAGE
CASE 751F–04
(SO–28L)
ISSUE E
NOTES:
–A–
1. DIMENSIONING AND TOLERANCING PER
ANSI Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSION A AND B DO NOT INCLUDE
MOLD PROTRUSION.
4. MAXIMUM MOLD PROTRUSION 0.15 (0.006)
PER SIDE.
15
28
1
14X P
M
M
0.010 (0.25)
B
–B–
5. DIMENSION D DOES NOT INCLUDE DAMBAR
PROTRUSION. ALLOWABLE
14
DAMBAR PROTRUSION SHALL BE 0.13
(0.005) TOTAL IN EXCESS OF D DIMENSION
AT MAXIMUM MATERIAL CONDITION.
28X D
M
MILLIMETERS
INCHES
M
S
S
0.010 (0.25)
T
A
B
DIM
A
B
C
D
MIN
17.80
7.40
2.35
0.35
0.41
MAX
18.05
7.60
2.65
0.49
0.90
MIN
MAX
0.711
0.299
0.104
0.019
0.035
R
X 45
0.701
0.292
0.093
0.014
0.016
C
–T–
SEATING
PLANE
F
26X G
G
J
K
M
P
R
1.27 BSC
0.050 BSC
0.23
0.13
0
0.32
0.29
8
0.009
0.005
0
0.013
0.011
8
K
F
10.01
0.25
10.55
0.75
0.395
0.010
0.415
0.029
J
6
MOTOROLA ANALOG IC DEVICE DATA
MC13022A
Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding
the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and
specificallydisclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters which may be provided in Motorola
datasheetsand/orspecificationscananddovaryindifferentapplicationsandactualperformancemayvaryovertime. Alloperatingparameters,including“Typicals”
must be validated for each customer application by customer’s technical experts. Motorola does not convey any license under its patent rights nor the rights of
others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other
applicationsintended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury
ordeathmayoccur. ShouldBuyerpurchaseoruseMotorolaproductsforanysuchunintendedorunauthorizedapplication,BuyershallindemnifyandholdMotorola
and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees
arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that
Motorola was negligent regarding the design or manufacture of the part. Motorola and
Opportunity/Affirmative Action Employer.
are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal
7
MOTOROLA ANALOG IC DEVICE DATA
MC13022A
How to reach us:
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51 Ting Kok Road, Tai Po, N.T., Hong Kong. 852–26629298
MC13022A/D
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