—1—
E92604A79-TE
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operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
Absolute Maximum Ratings (Ta=25 °C)
[Pin numbers shown are for the CXA1518S.]
• Supply voltage
V
CC
10
V
• Input signal
(Pin 6)
V
IS
0.6
Vp-p
• Control voltage
(Pins 12, 13, 14)
V
IC
V
CC
V
• Operating temperature
Topr
–20 to +75
°C
• Storage temperature
Tstg
–65 to +150
°C
• Allowable power dissipation
P
D
900
mW
(SDIP)
470
mW
(QFP)
• LED drive current
Iled
10
mA
Operating Voltage
6.0 to 4.5
V
Description
The CXA1518Q/S are bipolar ICs designed for
EIAJ TV sound multiplexing decoders. These ICs
provide various functions including sound
multiplexing demodulation, broadcast mode
discrimination (stereo/bilingual discrimination
display), mode display, and muting.
Features
• External parts greatly reduced with a built-in active
filter.
• Count down can be used for broadcast mode
discrimination so that adjustment for discrimination
system (Q-OSC) is not required.
• Output level of 380 mVrms (1 kHz, MONO, 100 %)
• Forced monaural operates with both stereo and
bilingual broadcasts.
• Built-in digital facsimile interference elimination
filter.
• Low supply voltage (V
CC
=5 V)
• The pin configuration of the CXA1518S is identical
to that of the CXA1138AS.
Applications
• Color TVs
• Hi-Fi VCRs
• Liquid crystal TVs
Structure
Bipolar silicon monolithic IC
EIAJ Sound Multiplexing Decoder
CXA1518Q
CXA1518S
32 pin QFP (Plastic)
22 pin SDIP (Plastic)
CXA1518Q/S
—2—
CXA1518Q/S
Block Diagram
CXA1518Q
CXA1518S
3.5f
H
CLOCK
952H
Z
CLOCK
1
2
3
4
5
6
8
9
10
11
12
13
19
21
23
25
26
27
28
29
30
31
32
22
24
20
18
17
M
C
O
U
T
N
C
N
C
N
C
N
C
N
C
N
C
C
U
B
I
M
P
X
IN
N
C
N
C
N
C
M
C
IN
L
O
U
T
R
O
U
T
M
O
U
T
MAIN
DEEM MATRIX
SUB
MAIN
TEST
L
R
CUE
CARRIER
OUTPUTAMP &
OUTPUT
SW
MAIN
OUT
CONT
LED
DRIVE
BIAS
CURRENT
IBIAS
SUB
BPF
4.5f
H
TRAP
3.5f
H
VCO
BUFFER
BIAS
VOLTAGE
INAMP
MPX SIGNAL
SCIN
SCOUT
NC
SUBI
GND
FLAJ
REFL
V
CC
FOMO
MUTE
MODE
NC
NC
LEDMAIN
LEDSUB
LEDST
COMP
FM
DEMOD
SUB
DEEM
VOLTAGE
REGULATOR
SUB
DET
I L LOGIC
2
AM
DEMOD
952H
Z
BPF
CUE
BPF
7
14
15
16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
S
U
B
I
G
N
D
F
L
A
J
R
E
F
L
V
C
C
N
C
N
C
C
U
B
I
L
E
D
S
T
L
E
D
S
U
B
L
E
D
M
A
IN
M
P
X
I
N
S
C
O
U
T
S
C
I
N
M
C
O
U
T
M
C
I
N
L
O
U
T
R
O
U
T
M
O
U
T
F
O
M
O
M
U
T
E
M
O
D
E
SUB
DEEM
MATRIX
FM
DEMOD
MAIN
DEEM
TEST
L
R
SUB
MAIN
MAINOUT
CUE
CARRIER
CONT
I L LOGIC
BIAS
CURRENT
SUB
BPF
SUB
DET
IBIAS
BUFFER
BIAS
VOLTAGE
IN
A
M
P
MPX SIGNAL
3.5f
H
952H
Z
BPF
952H
Z
AM
DEMOD
CLOCK CLOCK
COMP
LED
DRIVE
VOLTAGE
REGULATOR
4.5f
H
TRAP
CUE
BPF
3.5f
H
VCO
2
OUTPUTAMP
&
OUTPUT SW
—3—
CXA1518Q/S
Pin Description
(Ta=25 °C, V
CC
=5 V)
Pin numbers in brackets are for the CXA1518Q.
Pin No.
Symbol
Pin
Equivalent circuit
Description
SDIP QFP
voltage
1
2
3
4
6
8
29
30
31
32
3
7
GND
FLAJ
REFL
V
CC
MPXIN
CUBI
0
2.4 V
2.5 V
—
2.5 V
2.4 V
2
(30)
V
CC
V
CC
147
10k
80k
GND
40
µ
(31)
V
CC
V
CC
54k
14k
14k
20k
1.5k
3
(3)
V
CC
25k
90k
30k
GND
147
80
µ
2.5V
6
8
1k
40k
11k
2k
40k
(7)
V
CC
V
CC
147
2.5V
GND
Filter adjustment pin
Connects noise elimination filter of internal
reference power supply.
Power supply pin
Sound multiplexing signal input.
Standard input level=70 mVrms
(MONO 100 %)
Connects bias capacitor for Cue pulse
generator.
—4—
CXA1518Q/S
Pin No.
Symbol
Pin
Equivalent circuit
Description
SDIP QFP
voltage
9
10
11
12
13
14
15
9
10
11
14
15
16
17
LEDST
LEDSU
LEDM
MODE
MUTE
FOMO
MOUT
—
—
—
—
2.4 V
9
10
11
16k
16k
16k
64k
64k
64k
GND
V
CC
V
CC
V
CC
147
147
147
(14)
V
CC
V
CC
147 16k
16k
8k
2.4V
GND
20
µ
A
12
(15)
V
CC
V
CC
147 32k
160k
8k
GND
13
(16)
V
CC
V
CC
80k
GND
40
µ
147 1k
14
(17)
V
CC
V
CC
147
14k
32k
32k
GND
15
Connects the LEDs to display each mode.
Pin 9: Stereo
Pin 10: Sub
Pin 11: Main
Switches the output mode with the DC
voltage during bilingual broadcasting.
Output mute pin.
When set to high, only DC is output from
Pins 15, 16 and 17 (Pins 17, 18 and 20).
Forced monaural pin.
When set to high, monaural function
(main) is forcibly set regardless of stereo
and bilingual broadcasts and LEDs are
extinguished.
Main signal output pin.
Always outputs the main signal component
regardless of the broadcast mode.
—5—
CXA1518Q/S
Pin No.
Symbol
Pin
Equivalent circuit
Description
SDIP QFP
voltage
16
17
18
19
20
21
22
18
20
22
24
25
26
28
ROUT
LOUT
MCIN
MCOUT
SCIN
SCOUT
SUBI
2.4 V
2.4 V
2.5 V
1.7 V
2.5 V
1.7 V
2.4 V
(18)
V
CC
V
CC
147
14k
32k
32k
GND
16
(20)
V
CC
V
CC
147
14k
32k
32k
GND
17
18
GND
V
CC
V
CC
V
CC
147
147
147
147
(24)
(22)
16k
2.5V
160
µ
80
µ
80
µ
20P
19
GND
V
CC
V
CC
V
CC
147
147
147
147
20
(26)
(25)
80
µ
A
80
µ
A
160
µ
A
5k
2.5V
12k
18p
21
V
CC
V
CC
147
147
(28)
80
µ
20
µ
2.5V
1.4V
16k
15k
1k
8k
64k
8k
22
R-ch output pin
L-ch output pin.
During “TEST”, outputs the Cue signal
component passed through the Cue BPF.
Connects DC cut capacitor of the main
signal.
Connects DC cut capacitor of the sub
signal.
Connects bias capacitor of the sub FM
detector.
Grounding this pin enables the TEST
mode for filter adjustment.
—6—
CXA1518Q/S
Pin No.
Symbol
Pin
Equivalent circuit
Description
SDIP QFP
voltage
5, 7
1, 2
4, 5
6, 8
12, 13
19, 21
23, 27
NC
—
—
Keep these pins open
(They are not connected to the chip.)
Electrical Characteristics Measurement Circuit (CXA1518S)
ON
OFF
SW6
SW4
TEST
(ON)
NORM
(OFF)
C10
10
µ
F
C1
10
µ
F
C3
10
µ
F
C4
10
µ
F
C2
47
µ
F
C9
1
µ
F
C10
1
µ
F
L
O
U
T
R
O
U
T
M
A
IN
O
U
T
22
21
20
19
18
17
16
15
14
13
12
1
2
3
4
5
6
7
8
11
15kH
Z
LPF
CCIR
FILTER
SW1
SW2
SW3
MEASUREMENT
SYSTEM
RMS
DISTORTION
DC VOLT
E2
E3
E4
VR1
20K
R1
22K
R2
470
R3
470
R4
470
E1
5V
STEREO
SUB
MAIN
SIGNAL
SIG
ATT
SW5
9
10
A
∗
Set ATT such that the stereo separation
(L
→
R) to minimum.
—7—
CXA1518Q/S
Electrical Characteristics (Ta=25 °C, V
CC
=5 V)
Pin numbers shown in conditions are for the CXA1518S.
No.
1
2
3
4
5
6
7
8
9
Item
Current
consumption
Sub output
level 400 Hz
Sub frequency
response
characteristics
1 kHz
Sub frequency
response
characteristics
10 kHz
Sub distortion
factor
Sub S/N
Stereo
distortion factor
L ch
Stereo
distortion factor
R ch
Stereo
output level
L ch 1 kHz
Symbol
I
CC
VS1
FS1
FS2
DS
NS
Dst1
Dstr
Vst1
SW
conditions
1
4
4
4
4
4
4
4
4
Bias
conditions
1
2
and
3
2
and
3
2
and
3
2
and
3
2
and
3
2
2
2
Conditions
Measures the input current
to Pin 4.
Input signal: SIG1
Measures output amplitude
at Pins 16 and 17 (400 Hz,
sine wave) : Vs1
(15 k LPF)
Input signal: SIG2
Measures output amplitude
at Pins 16 and 17 (1kHz,
sine wave) : Vs2
Vs2
Fs1=20 log
Vs1
(15 k LPF)
Input signal: SIG3
Measures output amplitude
at Pins 16 and 17 (10 kHz,
sine wave) : Vs3
Vs3
Fs2=20 log
Vs1
(15 k LPF)
Input signal: SIG2
Measures output signal
distortion factor at Pins 16
and 17 (1 kHz, sine wave).
(15 k LPF)
Input signal: SIG2
Measures S/N ratio of the
outputs (1 kHz) at Pins 16
and 17.
(15 k LPF. RMS)
Input signal: SIG4
Measures output signal
distortion factor at Pin 17
(1 kHz, sine wave).
(15 k LPF)
Input signal: SIG5
Measures output signal
distortion factor at Pin 16
(1 kHz, sine wave)
(15 k LPF)
Input signal: SIG4
Measures output amplitude at
Pin 17 (1 kHz, sine wave).
(15 k LPF)
Test point
SDIP
Pin 4
Pins 16
and 17
∗
1
Pins 16
and 17
∗
1
Pins 16
and 17
∗
1
Pins 16
and 17
∗
1
Pins 16
and 17
∗
1
Pin 17
Pin 16
Pin 17
QFP
Pin 32
Pins 18
and 20
Pins 18
and 20
Pins 18
and 20
Pins 18
and 20
Pins 18
and 20
Pin 20
Pin 18
Pin 20
Min.
Typ.
Max.
Unit
14
20
26
mA
330
380
480
mVrms
–1.6
–0.6
0
dB
–19.0
–17.0
–14.7
dB
—
1
2
%
58
62
—
dB
—
0.2
1.5
%
—
0.2
1.5
%
310
360
440
mVrms
∗
1
When bias condition is [3], the test point is Pin 16 only.
—8—
CXA1518Q/S
No.
10
11
12
13
14
15
16
17
18
Item
Stereo
output level
R ch 1 kHz
Main output
level
MAIN OUT
Main output
level
Main frequency
response
characteristics
1 kHz
Main frequency
response
characteristics
10 kHz
Main distortion
factor
MAIN OUT
Main distortion
factor
Main distortion
factor at
maximum input
Main S/N ratio
Symbol
Vstr
Vm1
Vm2
Fm1
Fm2
Dm1
Dm2
Dm3
Nm
SW
conditions
4
4
4
4
4
4
4
4
4
Bias
conditions
2
2
2
2
2
2
2
2
2
Conditions
Input signal: SIG5
Measures output amplitude at
Pin 16 (1 kHz, sine wave).
(15 k LPF)
Input signal: SIG6
Measures output signal at
Pin 15 (400 Hz, sine wave).
(15 k LPF)
Input signal: SIG6
Measures output signal
amplitude at Pins 16 and 17
(400 Hz, sine wave).
(15 k LPF)
Input signal: SIG7
Measures output amplitude
at Pins 16 and 17 (1kHz,
sine wave) : Vm3
Vm3
Fm1=20 log
Vm2
(15 k LPF)
Input signal: SIG8
Measures output amplitude
at Pins 16 and 17 (10 kHz,
sine wave): Vm4
Vm4
Fm2=20 log
Vm2
(15 k LPF)
Input signal: SIG7
Measures output signal
distortion factor at Pin 15
(1 kHz, sine wave).
(15 k LPF)
Input signal: SIG7
Measures output signal
distortion factor at Pins 16
and 17 (1 kHz, sine wave).
(15 k LPF)
Input signal: SIG9
Measures output signal
distortion factor at Pins 16
and 17 (1 kHz, sine wave).
(15 k LPF)
Input signal: SIG7
Measures S/N ratio of
outputs at Pins 16 and 17
(1 kHz).
(15 k LPF. RMS)
SDIP
Pin 16
Pin 15
Pins 16
and 17
Pins 16
and 17
Pin 15
Pins 16
and 17
Pins 16
and 17
Pins 16
and 17
Pins 16
and 17
QFP
Pin 18
Pin 17
Pins 18
and 20
Pins 18
and 20
Pin 17
Pins 18
and 20
Pins 18
and 20
Pins 18
and 20
Pins 18
and 20
Min.
Typ.
Max.
Unit
310
360