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CXA1518Q/S
EIAJ Sound Multiplexing Decoder
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 (VCC=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 CXA1518Q 32 pin QFP (Plastic) CXA1518S 22 pin SDIP (Plastic)
Absolute Maximum Ratings (Ta=25 C) [Pin numbers shown are for the CXA1518S.] * Supply voltage VCC 10 * Input signal (Pin 6) VIS 0.6 * Control voltage (Pins 12, 13, 14) VIC VCC * Operating temperature Topr * Storage temperature Tstg * Allowable power dissipation PD -20 to +75 -65 to +150 900 470 * LED drive current Operating Voltage 6.0 to 4.5 Iled 10
V Vp-p V C C
mW (SDIP) mW (QFP) mA
V
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--
E92604A79-TE
CXA1518Q/S
MCOUT
24
23
22
21
20
19
18
17
TEST MAIN DEEM MATRIX SCIN 25 SCOUT 26 NC 27 FM SUBI 28 BIAS DEMOD GND 29 CURRENT FLAJ 30 REFL 31 VCC 32 IBIAS VOLTAGE REGULATOR BUFFER BIAS VOLTAGE INAMP 1 NC 2 NC 3 MPXIN MPX SIGNAL 4 NC 5 NC 6 NC 7 CUBI 8 NC SUB BPF 4.5fH TRAP CUE BPF 3.5fH VCO AM DEMOD 952HZ BPF SUB DET SUB DEEM MAIN SUB
L R
OUTPUTAMP & OUTPUT SW
CUE CARRIER
MOUT MAIN OUT 16 FOMO CONT 15 MUTE 14 MODE 13 NC 12 NC LED DRIVE 11 LEDMAIN 10 LEDSUB 9 COMP LEDST M OUT FOMO
Block Diagram CXA1518Q
I 2 L LOGIC 3.5fH 952HZ CLOCK CLOCK
CXA1518S
MC OUT SC OUT R OUT MODE 12 CONT MAIN FM DEMOD SUB BPF BIAS CURRENT BUFFER MAIN DEEM CUE CARRIER 11 LEDMAIN L OUT MUTE 13 I 2 L LOGIC 3.5fH 952HZ CLOCK CLOCK 10 LEDSUB MC IN SC IN SUBI
22
21
20
19 TEST L
18
17
ROUT
LOUT
MCIN
NC
NC
NC
16
15
14
SUB DEEM
MATRIX R SUB
OUTPUTAMP & OUTPUT SW
MAINOUT
SUB DET 4.5fH TRAP BIAS VOLTAGE IN AMP CUE BPF MPX SIGNAL 5 NC 6 MPX IN 7 NC AM DEMOD
3.5fH VCO
952HZ BPF
COMP
IBIAS
VOLTAGE REGULATOR
LED DRIVE
1 GND
2 FLAJ
3 REFL
4 VCC
8 CUBI
9 LEDST
--2--
CXA1518Q/S
Pin Description Pin No. Symbol SDIP QFP 1 29 GND
(Ta=25 C, VCC=5 V) Pin voltage 0 Equivalent circuit
Pin numbers in brackets are for the CXA1518Q. Description GND
VCC
VCC 10k
2
30
FLAJ
2.4 V
147 2 (30) 40 GND 80k
Filter adjustment pin
VCC 54k 1.5k
VCC 14k 14k
3
3
31
REFL
2.5 V
(31)
Connects noise elimination filter of internal reference power supply.
20k
4
32
VCC
--
VCC 147 90k 30k 80 2.5V GND
Power supply pin
6
3
MPXIN
2.5 V
6 (3) 25k
Sound multiplexing signal input. Standard input level=70 mVrms (MONO 100 %)
VCC 1k 147 8 (7) 40k 40k
VCC
8
7
CUBI
2.4 V
11k
2k 2.5V
Connects bias capacitor for Cue pulse generator.
--3--
CXA1518Q/S
Pin No. Symbol SDIP QFP 9 9 LEDST
Pin voltage
Equivalent circuit
VCC VCC VCC 147 9 147 10
Description
10
10
LEDSU
--
147 11
64k
64k 16k
Connects the LEDs to display each mode. Pin 9: Stereo Pin 10: Sub Pin 11: Main
64k 16k GND
11
11
LEDM
16k
VCC 147 16k 2.4V 8k 16k
VCC 20A
12
14
MODE
--
12 (14)
Switches the output mode with the DC voltage during bilingual broadcasting.
GND
VCC 8k
VCC
13
15
MUTE
--
13 (15)
147 32k 160k GND
Output mute pin. When set to high, only DC is output from Pins 15, 16 and 17 (Pins 17, 18 and 20).
VCC 147 1k 14 (16) 80k
VCC 40
14
16
FOMO
--
GND
Forced monaural pin. When set to high, monaural function (main) is forcibly set regardless of stereo and bilingual broadcasts and LEDs are extinguished.
VCC
VCC 147 14k
15
17
MOUT
2.4 V
15 (17)
32k 32k GND
Main signal output pin. Always outputs the main signal component regardless of the broadcast mode.
--4--
CXA1518Q/S
Pin No. Symbol SDIP QFP
Pin voltage
Equivalent circuit
Description
VCC
VCC 147 14k
16
18
ROUT
2.4 V
16 (18)
R-ch output pin
32k 32k GND
VCC
VCC 147 14k
17
20
LOUT
2.4 V
17 (20)
32k 32k GND
L-ch output pin. During "TEST", outputs the Cue signal component passed through the Cue BPF.
VCCVCC
VCC 147
18
22
MCIN
2.5 V
19 (24) 18
147 20P 147 147 16k 160 80 GND
Connects DC cut capacitor of the main signal.
19
24
MCOUT
1.7 V
(22)
2.5V 80
20
25
SCIN
2.5 V
21 (26) 20 (25)
VCC VCC 147 147
VCC
18p 147 5k 147 12k 2.5V 160A 80A 80A GND
Connects DC cut capacitor of the sub signal.
21
26
SCOUT
1.7 V
VCC 80 VCC 20
16k 15k 1k 2.5V 8k 1.4V
64k 8k 147
22
28
SUBI
2.4 V
22 (28)
147
Connects bias capacitor of the sub FM detector. Grounding this pin enables the TEST mode for filter adjustment.
--5--
CXA1518Q/S
Pin No. Symbol SDIP QFP 1, 2 4, 5 6, 8 5, 7 NC 12, 13 19, 21 23, 27
Pin voltage
Equivalent circuit
Description
--
--
Keep these pins open (They are not connected to the chip.)
Electrical Characteristics Measurement Circuit (CXA1518S)
SW1 C10 10F MAIN OUT ON OFF SW6 15kHZ LPF SW2 CCIR FILTER MEASUREMENT SYSTEM RMS DISTORTION DC VOLT
R OUT
L OUT
TEST (ON) SW4
NORM (OFF) C9 1F
SW3
C10 1F E2 E3 E4
22
21
20
19
18
17
16
15
14
13
12
1 VR1 20K
2
3
4 A C1 10F
5
6
7 C3 10F
8
9
10
11
C4 10F
STEREO SUB
MAIN R4 470
R1 22K C2 47F SIGNAL SIG ATT E1 5V
R2 470
R3 470
SW5
Set ATT such that the stereo separation (L R) to minimum.
--6--
CXA1518Q/S
Electrical Characteristics (Ta=25 C, VCC=5 V)
No. 1 Item Current consumption Symbol ICC SW conditions 1 Bias conditions 1 to Pin 4.
Pin numbers shown in conditions are for the CXA1518S.
Conditions Test point SDIP Pin 4 QFP Pin 32 Min. 14 Typ. 20 Max. 26 Unit mA
Measures the input current Input signal: SIG1
2
Sub output level 400 Hz
2 VS1 4 and 3
Measures output amplitude at Pins 16 and 17 (400 Hz, sine wave) : Vs1 (15 k LPF) Input signal: SIG2 Measures output amplitude
Pins 16 Pins 18 and 17 1 and 20 330 380 480 mVrms
Sub frequency 3 response characteristics 1 kHz FS1 4
2 and 3
at Pins 16 and 17 (1kHz, sine wave) : Vs2 Fs1=20 log Vs2 Vs1 (15 k LPF) Input signal: SIG3 Measures output amplitude
Pins 16 Pins 18 and 17 1 and 20 -1.6 -0.6 0 dB
Sub frequency 4 response characteristics 10 kHz FS2 4
2 and 3
at Pins 16 and 17 (10 kHz, sine wave) : Vs3 Fs2=20 log Vs3 Vs1 (15 k LPF) Input signal: SIG2
Pins 16 Pins 18 and 17 1 and 20 -19.0 -17.0 -14.7 dB
5
Sub distortion factor
2 DS 4 and 3
Measures output signal distortion factor at Pins 16 and 17 (1 kHz, sine wave). (15 k LPF) Input signal: SIG2
Pins 16 Pins 18 and 17 1 and 20 -- 1 2 %
2 6 Sub S/N NS 4 and 3
Measures S/N ratio of the outputs (1 kHz) at Pins 16 and 17. (15 k LPF. RMS) Input signal: SIG4
Pins 16 Pins 18 and 17 1 and 20 58 62 -- dB
Stereo 7 distortion factor L ch Dst1 4 2
Measures output signal distortion factor at Pin 17 (1 kHz, sine wave). (15 k LPF) Input signal: SIG5 Pin 17 Pin 20 -- 0.2 1.5 %
Stereo 8 distortion factor R ch Dstr 4 2
Measures output signal distortion factor at Pin 16 (1 kHz, sine wave) (15 k LPF) Pin 16 Pin 18 -- 0.2 1.5 %
Stereo 9 output level L ch 1 kHz Vst1 4 2
Input signal: SIG4 Measures output amplitude at Pin 17 (1 kHz, sine wave). (15 k LPF) Pin 17 Pin 20 310 360 440 mVrms
1 When bias condition is [3], the test point is Pin 16 only. --7--
CXA1518Q/S
No.
Item Stereo
Symbol
SW conditions
Bias conditions
Conditions Input signal: SIG5
Test point SDIP QFP
Min.
Typ.
Max.
Unit
10
output level R ch 1 kHz Main output
Vstr
4
2
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
Pin 16
Pin 18
310
360
440
mVrms
11
level MAIN OUT
Vm1
4
2
Pin 15
Pin 17
330
390
480
mVrms
12
Main output level
Vm2
4
2
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,
Pins 16 Pins 18 and 17 and 20
330
390
480
mVrms
Main frequency 13 response characteristics 1 kHz Fm1 4 2
sine wave) : Vm3 Fm1=20 log Vm3 Vm2 (15 k LPF) Input signal: SIG8 Measures output amplitude at Pins 16 and 17 (10 kHz,
Pins 16 Pins 18 and 17 and 20
-1.6
-0.6
0
dB
Main frequency 14 response characteristics 10 kHz Fm2 4 2
sine wave): Vm4 Fm2=20 log Vm4 Vm2 (15 k LPF) Input signal: SIG7
Pin 15
Pin 17
-16.5
-14.5
-12.5
dB
Main distortion 15 factor MAIN OUT Dm1 4 2
Measures output signal distortion factor at Pin 15 (1 kHz, sine wave). (15 k LPF) Input signal: SIG7 Measures output signal Dm2 4 2 distortion factor at Pins 16 and 17 (1 kHz, sine wave). (15 k LPF) Input signal: SIG9
Pins 16 Pins 18 and 17 and 20
--
0.2
1
%
16
Main distortion factor
Pins 16 Pins 18 and 17 and 20
--
0.2
1
%
Main distortion 17 factor at maximum input Dm3 4 2
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
Pins 16 Pins 18 and 17 and 20
--
0.3
3
%
18
Main S/N ratio
Nm
4
2
outputs at Pins 16 and 17 (1 kHz). (15 k LPF. RMS)
Pins 16 Pins 18 and 17 and 20
65
69
--
dB
--8--
CXA1518Q/S
No.
Item
Symbol
SW conditions
Bias conditions Sstr=
Conditions Input signal: SIG4
Test point SDIP QFP
Min.
Typ.
Max.
Unit
Stereo 19 separation LR Sstr 4 2 20 log
Pin17 output amplitude Pin 16 output amplitude (15 k LPF) Input signal: SIG5 Sstl=
Pins 16 Pins 18 (dB) and 17 and 20
35
50
--
dB
Stereo 20 separation RL Sstl 4 2 20 log
Pin16 output amplitude Pin17 output amplitude (15 k LPF) Input signal: SIG15 Calculates the level difference between the output amplitude at Pins 16 and 17
Pins 16 Pins 18 (dB) and 17 and 20
35
50
--
dB
21
Cross talk Main Sub
Cms1
2
2
(Vms1) and the measured value in measurement No. 13 (Vm3). Cms1=20 log Vm3 Vms1 (dB)
Pins 16 Pins 18 and 17 and 20
52
59
--
dB
(15 k LPF, 1 k BPF) Input signal: SIG2 Calculates the level difference between the output amplitude at Pins 16 and 17 22 Cross talk Sub Main Csm1 2 1 (Vsm1) and the measured value in measurement No. 3 (Vs2). Csm1=20 log VS2 Vsm1 (dB) Pins 16 Pins 18 and 17 and 20 59 66 -- dB
(15 k LPF, 1 k BPF) Input signal: SIG15 Calculates the level differCross talk 23 Main Sub BOTH MODE Cms2 2 3 ence between the output amplitudes at Pin 16 (Vms2) and at Pin 17 (Vms3) Cms2=20 log Vms3 Vms2 (dB) Pins 16 Pins 18 and 17 and 20 52 58 -- dB
(15 k LPF, 1 k BPF)
--9--
CXA1518Q/S
No.
Item
Symbol
SW conditions
Bias conditions
Conditions Input signal: SIG2 Calculates the level difference between the output
Test point SDIP QFP
Min.
Typ.
Max.
Unit
Cross talk 24 Sub Main BOTH MODE Csm2 2 3
amplitude at Pin 17 (Vsm2) and at Pin 16 (Vsm3). Csm2=20 log Vsm3 Vsm2 (dB)
Pins 16 Pins 18 and 17 and 20
59
64
--
dB
(15 k LPF, 1 k BPF) Input signal: SIG11 25 Residual carrier Sub Lcs 3 2 Measures the amplitude of the subcarrier component of the output at Pins 16 and 17. Input signal: SIG11 26 Residual carrier Main Lcm 3 1 Measures the amplitude of the subcarrier component of the output at Pins 16 and 17. Input signal: SIG7 Calculate the level difference between the output amplitude at Pins 16 and 17 27 Mute volume Main Mm 2 4 (VMm) and the measured value in measurement No. 13 (Vm3). Mm=20 log Vm3 VMm (dB) Pins 16 Pins 18 and 17 and 20 70 80 -- dB Pins 16 Pins 18 and 17 and 20 -- 10 20 mVrms Pins 16 Pins 18 and 17 and 20 -- 14 30 mVrms
(1 k BPF, 15 k LPF) Input signal: SIG2 Calculates the level difference between the output amplitude at Pins 16 and 17 28 Mute volume Sub Ms 2 4 (VMs) and the measured value in measurement No. 3 (Vs2). Ms=20 log Vs2 VMs (dB) Pins 16 Pins 18 and 17 and 20 70 80 -- dB
(1 k BPF, 15 k LPF) Input signal: SIG4 and 5 Measures output signal level difference at Pins 16 and 17 under bias conditions 2 and 4. Mute volume Stereo 2 Mst 2 and 4 20 log Mst= measured value (mVrms) measured value under bias condition 4 (mVrms) (1 k BPF, 15 k LPF) Pins 16 Pins 18 and 20 2 under bias condition 2 and 17 70 80 -- dB
29
2 Measure Pin 17 when input signal is SIG4, and Pin 16 when input signal is SIG5. --10--
CXA1518Q/S
No.
Item
Symbol
SW conditions
Bias conditions 2
Conditions Input signal: SIG18 Measures output DC level fluctuation at Pin 17 under bias conditions 2 and 4. Input signal: SIG18 Measures output DC level fluctuation at Pin 16 under bias conditions 2 and 4. Input signal: No input Measures output DC level fluctuation at Pin 15 under bias conditions 2 and 4. Input signal: SIG12 Varying SIG12, measures
Test point SDIP QFP
Min.
Typ.
Max.
Unit
30
DC offset Stereo L ch
Ostl
3
and 4 2
Pin 17
Pin 20
--
20
100
mV
31
DC offset Stereo R ch
Ostr
3
and 4 2
Pin 16
Pin 18
--
20
100
mV
32
DC offset Main out
Om
3
and 4
Pin 15
Pin 17
--
20
100
mV
33
Cue detector sensitivity
CD
4
2
attenuation while switching from monaural to sound multiplexing mode. Input signal: SIG13 Varying SIG13, measures
--
--
8
11
17
dB
34
Sub detector sensitivity
SD
4
2
attenuation while switching from monaural to sound multiplexing mode. Input signal: SIG14
--
--
9
12
17
dB
35
Cue BPF gain
CG
5
2
Measures output amplitude at Pin 17 Input signal: SIG16 and SIG17 Measuring output amplitude at Pin 22, measure the output signal level difference
Pin 17
Pin 20
125
190
290
mVrms
36
4.5 fH trap attenuation level
TG
6
2
when inputting SIG16 and when inputting SIG17. TG= measured value 20 log for SIG16 (mVrms) measured value for SIG17 (mVrms)
Pin 22
Pin 28
20
35
--
dB
--11--
CXA1518Q/S
SW Condition Table SW No. 1 2 3 4 5 6 1 off off off on off off 2 off on off off off off 3 off off on off on on 4 off off off off on off 5 off off off off on on 6 off off off off off on
BIAS Condition Table SW No. 1 2 3 4 E1 5V 5V 5V 5V E2 0.5 V 4.5 V 2.5 V 4.5 V E3 0.5 V 0.5 V 0.5 V 4.5 V E4 0.5 V 0.5 V 0.5 V 0.5 V
--12--
CXA1518Q/S
Input Signal Definitions SIG1 : Sound MPX signal Main : 0 % Sub : 400 Hz, 100 % MOD Cue : Bilingual SIG2 : Sound MPX signal Main : 0 % Sub : 1 kHz, 100 % MOD Cue : Bilingual SIG3 : Sound MPX signal Main : 0 % Sub : 10 kHz, 100 % MOD Cue : Bilingual SIG4 : Sound MPX signal L ch : 1 kHz, 100 % R ch : 0 % Cue : Stereo SIG5 : Sound MPX signal L ch : 0 % R ch : 1 kHz, 100 % Cue : Stereo SIG6 : Sound MPX signal Main : 400 Hz, 100 % Sub : Carrier OFF Cue : Cue signal OFF SIG7 : Sound MPX signal Main : 1 kHz, 100 % Sub : Carrier OFF Cue : Cue signal OFF SIG8 : Sound MPX signal Main : 10 kHz, 100 % Sub : Carrier OFF Cue : Cue signal OFF SIG9 : Sound MPX signal Main : 1 kHz, 250 % Sub : Carrier OFF Cue : Cue signal OFF SIG10 : Sound MPX signal L ch : 1 kHz, 100 % R ch : 0 % Cue : Cue signal OFF SIG11 : Sound MPX signal Main : 0 % Sub : 0 % (carrier only) Cue : Bilingual SIG12 : Sound MPX signal Main : 0 % Sub : 0 % (carrier only) Cue : Bilingual (Level adjusted to the minimum) SIG13 : Sound MPX signal Main : 0 % Sub : 0 % (level adjusted to the minimum) Cue : Bilingual SIG14 : 55.069 kHz sine wave 5.6 mVrms SIG15 : Sound MPX signal Main : 1 kHz, 100 % Sub : 0 % (carrier only) Cue : Bilingual SIG16 : 31.47 kHz sine wave 42 mVrms SIG17 : 70.80 kHz sine wave 42 mVrms SIG18 : Sound MPX signal L ch : 0 % R ch : 0 % Cue : Stereo Sound MPX signal level is defined as monaural 100 % at 1 Vp-p.
--13--
CXA1518Q/S
Output and LED ON/OFF Table MODE SW Broadcast status Stereo SUB BOTH MAIN x x x on x x x on Bilingual x x x x x x on x x x x x x Forced monaural off on x off off off on x x x Output status MUTE off off on off off off off on off on L R LED ON/OFF conditions SUB off off off on on off off off off off MAIN off off off off on on off off off off
MAIN STEREO on off off off off off off off off off
Monaural x : No response
L R L+R L+R L+R L+R DC DC DC SUB SUB MAIN MAIN SUB MAIN MAIN MAIN MAIN MAIN MAIN MAIN DC DC DC MONO MONO MONO DC DC DC
Control Voltage Range MODE SW Pin 12 (Pin 14) FORCED MONO Pin 14 (Pin 16) MUTE Pin 13 (Pin 15) SUB BOTH MAIN on off on off
Pin numbers in brackets are for the CXA1518Q. Voltage range 4.0 V to VCC 2 V to 3 V 0 V to 0.5 V 3 V to VCC 0 V to 0.5 V (or OPEN) 3 V to VCC 0 V to 0.5 V (or OPEN)
Description of Operation Pin numbers in brackets are for the CXA1518Q. The sound multiplexing signal input from Pin 6 (Pin 3) passes through IN AMP, and is added to the Cue BPF, SUB BPF and the MAIN de-emphasis circuits. 1 Discrimination system The Cue BPF passes only the Cue signal component of the multiplexing signal. The AM demodulator detects the amplitude modulation of the Cue signal (AM wave) and generates a sine wave of either 922.5 Hz (for bilingual) or 982.5 Hz (for stereo sound). COMP shapes the carrier-stripped Cue signal into a waveform, transforming it into pulses of either 922.5 Hz or 982.5 Hz, after which it is added to the LOGIC unit. A 3.5fH VCO generates a 3.5fH pulse locked to the Cue signal carrier wave (3.5fH), and sends it to the LOGIC unit. The LOGIC unit performs broadcast mode discrimination using the countdown method. From this result, and the existence/absence of a SUB signal from the SUB Detector, MUTE ON/OFF from CONT, MODE Switch, and the FOMO ON/OFF commands, the logic unit generates an output switchover control signal to control the output statuses of OUTPUT SW and MAIN OUT. --14--
CXA1518Q/S
2
Main system MAIN DEEM applies de-emphasis on the MAIN signal component and removes the SUB and Cue components. After having passed through MAIN DEEM, the MAIN signal is added to MARTIX, OUTPUT AMP, and MAIN OUT. Sub system SUB BPF passes the SUB signal component of the multiplexed signal. A 4.5fH trap filter then removes the digital facsimile signal component. FM demodulation frequency demodulates the Sub signal. The SUB DEEM applies de-emphasis on the FM demodulated Sub signal and removes the carrier wave component. After passing through SUB DEEM, the SUB signal is added to MATRIX and OUTPUT AMP. Matrix and output system When broadcasting in stereo, MATRIX generates L and R signals by adding and subtracting the MAIN signal from MAIN DEEM and the SUB signal from SUB DEEM. OUTPUT AMP & OUTPUT SW switch the output signals as instructed by LOCIG. Note that MAIN OUT always outputs the MAIN signal component regardless of the broadcast mode.
3
4
Adjustment Methods 1. Preset before filter adjustment
Japan sound multiplexing encoder MPX IN Application circuit
VR2 TP1
Oscilloscope
Fig. 1 Procedure 1) Connect as shown in Fig. 1 2) Set the encoder to MONO MODE, and input a 1 kHz signal to MPX IN. 3) Adjust VR2 until the level on TP1 (Pin 6) is 0.2 Vp-p (70 mVrms). (Pin 3 for the CXA1518Q)
--15--
CXA1518Q/S
2. Filter adjustment
Japan sound multiplexing encoder MPX IN TEST SW4 VR1 L OUT Oscilloscope Application circuit
Fig. 2 Procedure 1) Connect as shown in Fig. 2. 2) Set SW4 to TEST. (Turn SW6 OFF) 3) Put the encoder in stereo mode, and input only a modulated Q signal into MPX IN of the board. 4) Observing L.OUT with the oscilloscope, adjust VR1 until the Q signal output to be maximum.
3
Separation adjustment
Japan sound multiplexing encoder Application circuit MPX IN R L Oscilloscope AC voltmeter
VR2 L.OUT R.OUT
CH1 CH2 1kHz BPF
Switch
Fig. 3 Procedure 1) Connect as shown in Fig. 3. (Set SW4 to NORM) 2) * Set the encoder to stereo mode and perform 100 % modulation of a 1 kHz signal. * Output only the L ch. 3) Observing the oscilloscope and the AC voltmeter, adjust VR2 until the R ch to be minimum. (Separation standard 35 dB or more)
--16--
CXA1518Q/S
Application Circuit CXA1518Q
MAIN OUT 17 16 15 SW3 SW2 OFF ON OFF ON MAIN BOTH SUB 29 30 31 C1 10 A 32 1 2 3 4 5 6 7 8 12 11 10 9 MAIN SUB R6 2.4k R5 2.4k R4 470 R3 470 14 SW1 13
L OUT
C8 1
C7 10
C6 C5 10 10
24 C9 1 C10 NORM 10 (OFF) 25 26 27 SW4 28 TEST (ON) R1 22k VR1 20k
23
22
21
20
19
18
R OUT
R2 STEREO 470
C2 47 VR2 1k
C3 10 70mVRMS (MONO 100%)
C4 10
VCC 5V
MPX IN
Non-polar capacitor is recommended for C8 and C9. NC pin is left open.
Application circuits shown are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits or for any infringement of third party patent and other right due to same.
--17--
CXA1518Q/S
CXA1518S
C10 10F TEST (ON) SW4 NORM (OFF) C9 1F
MAIN OUT
R OUT
L OUT
R6 2.4k ON OFF C5 10F ON MAIN
R5 2.4k BOTH SUB
C8 1F
C6 10F C7 10F 18 17 16 15
OFF SW3 SW2 SW1 13 12
22
21
20
19
14
1 VR1 20k
2
3
4 A C1 10F
5
6
7 C3 10F
8
9
10
11
C4 10F
STEREO SUB
MAIN R4 470
R1 22k C2 47F VR2 1K
R2 470
R3 470
70mVRMS (MONO 100%)
VCC 5V
MPX IN
Non-polar capacitor is recommended for C8 and C9. NC pin is left open.
Application circuits shown are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits or for any infringement of third party patent and other right due to same.
--18--
CXA1518Q/S
De-emphasis characteristics
SUB BPF frequency characteristics
Output level (dB)
Output level (dB) MAIN SUB 100 1k Frequency (Hz) 10k
0 -20 -40 -60 10 20 30 40 50 60 70 80 90 100
0 -5 -10 -15
Frequency (Hz)
Cue BPF frequency characteristics 3
MAIN distortion characteristics
Attenuation (dB)
2 0 -20 Distortion (%) 1 0.5 0 3.5fH-40k 3.5fH-20k 3.5fH 3.5fH+20k 3.5fH+40k Frequency (Hz) 100 200 300 MAIN degree of modulation factor (%)
-40 -60
--19--
CXA1518Q/S
Package Outline CXA1518Q
Unit : mm
32PIN QFP (PLASTIC)
9.0 0.2 + 0.3 7.0 - 0.1 24 17 + 0.35 1.5 - 0.15
0.1
25
16
32
9
+ 0.2 0.1 - 0.1
1 0.8 + 0.15 0.3 - 0.1
8 + 0.1 0.127 - 0.05 0 to 10
0.24
M
PACKAGE MATERIAL SONY CODE EIAJ CODE JEDEC CODE QFP-32P-L01 QFP032-P-0707 LEAD TREATMENT LEAD MATERIAL PACKAGE MASS
EPOXY RESIN SOLDER PLATING 42 ALLOY 0.2g
CXA1518S
+ 0.4 19.2 - 0.1
22PIN SDIP (PLASTIC)
+ 0.1 0.05 0.25 -
12
22
+ 0.3 6.4 - 0.1
1 1.778
11
0.5 0.1 + 0.15 0.9 - 0.1
+ 0.15 3.25 - 0.2
0.51 MIN
+ 0.4 3.9 - 0.1
7.62
0 to 15
Two kinds of package surface: 1.All mat surface type. 2.All mirror surface type.
PACKAGE STRUCTURE
MOLDING COMPOUND SONY CODE EIAJ CODE JEDEC CODE SDIP-22P-01 SDIP022-P-0300 LEAD TREATMENT LEAD MATERIAL PACKAGE MASS EPOXY RESIN SOLDER PLATING COPPER ALLOY 0.95g
--20--
0.50
(8.0)

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