MC13020P Datasheet, PDF (1/6 Pages) Motorola, Inc – MOTOROLA C-QUAM AM STEREO DECODER

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MC13020P
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Advance Information
MOTOROU C-QUAM@ AM STEREO DECODER
This circuit is a complete one-chip full-feature AM stereo de-
coding and pilot detection system. It employs full-wave envelope
signal detection at all times for the L + R signal, and decodes
L– R signals only in the presence of valid stereo transmission.
. No Adjustments, No Coils
MOTOROM C-QUAM@
AM STEREO .t$;i:t,
DECODER ~’~i:: ‘“
*$1$,,,‘“::>
SILICON MO~~~&&”b
lNTEGRATEO’~@lT
.~3\\;.‘;,,,;,!..,,~!\~’~~~+
~
‘*r~::-.$~,.,\,~...$,,,..$t~.
q Few Peripheral Components
q True Full-Wave Envelope Detection for L+ R
q PLL Detection For L–R
. 25 Hz Pilot Presence Required To Receive L– R
q Pilot Acquisition Time 300 ms For Strong Signels, Time
EMended For Noise Conditions To Prevent “Falsing”
>>:f,}?,~,:,
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. Internal Level Detector Can Be Used As AGC Source
11 ., ~.m,~,..:l$~:,.,’{tw.~
..,.y
,$>. .},$$>
PLASTIC PACKAGE
CASE 738-02
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a^“%
a^.
Q Detector .20
Phase 19
Detector *
3\0.0033
47 KF
‘F’nput
,. ^{?~.,”,!”,}
v
~i$ ‘l! L,,> ~,!~\$
Tuner
:*‘.$“$]{,,*.
AGC ,.
,W ? o
11 ^{sour+:,.!” ,, + PF O.oo1}
Detector
5 Error
Amplifier .
.?,;~$?~”:*tp’~*
:\;~,“.>+”i+-“,3t$, ^”%
...*:?’**’A@&o
,\.:X...\i..:.:^{~j<q;,:t,!,’toutputs}
~‘+“<s,.x~*,:,:$>.~:\;,,y
c
$‘V$.*.,,~&.~,,;p,,>~,.y+,
‘.$+~J~
~,.+
TT I‘ 6Vcc
==
7
Left Output
8
Right Output
Auto Monaural
100k
9 Forced
Monaural
Osc. Feedback ‘8 _u
’430
Osc. Input _{.~‘7~+’}
*-
Ground ‘6
;3
10:O1* 1
15 =
Stereo Lamp
x
I ::.?.-
-I -
;;;;a:or
0.0033
Pilot Detector 14
Input
Pilot Filter 13
Input
~b
Co-channel 12
Input
+ 0.47
220
k
+
0.47
56 k
l.sk
,OPFF
4.7 k
glo
1:
=
2.2 +
T MF -
=
10
Lock
AGC’d Q 11
output ~
430
*muRata Ceramic Resonator — CSA3.60MT7
and Temp. Comp. Capacitor — CSC500K7
~:;
.
4.7 pF > _h
:
The purchase of the Motorola C-QUAM@ AM Stereo Decoder does not carry with such purchase any license by implication, estoppel or othewise,
under any patent rights of Motorola or others covering any combination of this decoder with other aiementa including use in a radio receiver. Upon
application by an interested Paw, licenses are available from Motorola on its patants applicable to AM Stereo radio receivers.
Iis documsntcontains information on a new produti. Specificationsand information herein
B subject to changa without notica.
@MOTOROLA INC., 19S5
C-QUAM is a trademark of Motorola Inc.
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ADI-725R2
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