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PDF CXA2202M Data sheet ( Hoja de datos )
| Número de pieza | CXA2202M | |
| Descripción | EIAJ Sound Multiplexing Decoder | |
| Fabricantes | Sony Corporation | |
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EIAJ Sound Multiplexing Decoder
CXA2202M
Description
The CXA2202M, is a bipolar IC designed as EIAJ
TV sound multiplexing decoder, provides various
functions including sound multiplexing
demodulation, broadcast mode identification
(stereo/bilingual discrimination display), mode
display, and muting.
28 pin SOP (Plastic)
Features
• Adjustment free of filter
• High frequency stereo separation improved
• An internal active filter greatly reduces the
external parts
• Use of the countdown method for broadcast
mode identification eliminates the necessity of
adjusting the identification system (Cue oscillator)
• Internal filter eliminates interference from digital
facsimile signals
• The discrimination time needed to shift from
multiplexing sound to monaural sound is reduced.
• Output level: 520mVrms (1kHz, monaural, 100%)
• Forced monaural mode can be set to operate
only for stereo broadcasts or for stereo/bilingual
broadcasts.
Applications
• Color TVs
• Hi-Fi VCRs
Structure
Bipolar silicon monolithic IC
Absolute Maximum Ratings (Ta = 25°C)
• Supply voltage
Vcc 10 V
• Input signal (Pin 7)
Vis
0.6 Vp-p
• Control voltage
(Pins 6, 16, 17, 18)
Vic
Vcc V
• Operating temperature Topr –20 to +75 °C
• Storage temperature Tstg –65 to +150 °C
• Allowable power dissipation
PD 1000 mW
• LED drive current ILED 10 mA
Operating Supply Voltage Range 8.5 to 9.5 V
Pin Configuration
GND 1
NC 2
REFL 3
Vcc 4
NC 5
MO MODE 6
MPX IN 7
NC 8
CUBI 9
NC 10
LEDST 11
LEDSU 12
LEDM 13
NC 14
28 SUBI
27 NC
26 SC OUT
25 SC IN
24 NC
23 MC OUT
22 MC IN
21 L OUT
20 R OUT
19 M OUT
18 FOMO
17 MUTE
16 MODE
15 NC
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by any
implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
–1–
E02965
1 page  
CXA2202M
Pin
No.
Symbol
20 R OUT
21 L OUT
22 MC IN
23 MC OUT
25 SC IN
26 SC OUT
Pin
voltage
4.1V
4.1V
4.1V
3.4V
4.1V
3.9V
Equivalent circuit
Description
Vcc 147
Vcc
17.2k
20
32k
1.5m 32k
GND
Vcc 147
Vcc
17.2k
21
32k
1.5m 32k
GND
Vcc Vcc
147
10k 10k
147
23
147
22
20k
3p
14.4k 5.6k
4.2V 160µ
40µ 150µ
Vcc 10k 10k
Vcc
GND
Vcc
R-ch output.
L-ch output.
During "TEST", the
Cue signal component
passed through the
Cue BPF is output.
DC cut capacitor
connection of main
signal.
147
26
8k
Vcc
40k
147
25
320µ
17k
4.2V
4.2V
3p
11.4k 5.6k
40µ 180µ
DC cut capacitor
connection of sub
signal.
GND
28 SUBI
4.1V
Vcc
80µ 20µ
Vcc 16k
64k
16k 1k
8k 8k
28
147
4.2V
2.4V 3k
Bias capacitor
connection of sub FM
detector. "TEST" mode,
used for filter
adjustment, is
activated by grounding
this pin.
–5–
5 Page 
CXA2202M
SW Bias
No. Item Symbol condi- condi-
tions tions
Conditions
Measure-
ment
Min. Typ. Max. Unit
point
28
Mute volume
SUB
Ms
4
Input signal: SIG2
Caluculate the level
difference between the
output amplitude of
Pins 20 and 21 (VMs)
4
and the measured
value (Vs2) in
Pins 20
and 21
70
80
measurement No. 3.
Ms = 20 log
Vs2
VMs
(dB)
(15kLPF, 1kBPF)
— dB
Input signals: SIG4, 5
Measure the level
difference between the
output signals of Pins
20 and 21 under bias
29
Mute volume
stereo
Mst
4
2
and
conditions 2 and 4.
Mst = Measured value
4 under bias
Pins 20
and 21∗2
70
80
—
dB
20
log
condition 2 (mVrms)
Measured value
under bias
condition 4 (mVrms)
(15kLPF, 1kBPF)
30
DC offset
stereo L-ch
Ostl 3
Input signal: SIG18
2 Measure the fluctuation
and in the output DC level Pin 21
4 of Pin 21 under bias
conditions 2 and 4.
— 20 100 mV
31
DC offset
stereo R-ch
Ostr 3
Input signal: SIG18
2 Measure the fluctuation
and in the output DC level Pin 20
4 of Pin 20 under bias
conditions 2 and 4.
— 20 100 mV
32
DC offset
MAIN OUT
Input signal: No signal
2 Measure the fluctuation
Om 3 and in the output DC level Pin 19
4 of Pin 19 under bias
conditions 2 and 4.
— 20 100 mV
33
Cue detection
sensitivity
CD
4
Input signal: SIG12
Change SIG12 and
2
measure amount of
attenuation at the point
"monaural" switches to
"Sound multiplex".
—
9 14 17 dB
∗2 Measure Pin 21 for SIG4 input; Pin 20 for SIG5 input.
– 11 –
11 Page | ||
| Páginas | Total 18 Páginas | |
| PDF Descargar | [ Datasheet CXA2202M.PDF ] | |
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