CXA2104S Sony, CXA2104S Datasheet

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CXA2104S

Manufacturer Part Number
CXA2104S
Description
Manufacturer
Sony
Datasheet

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Part Number
Manufacturer
Quantity
Price
Part Number:
CXA2104S
Manufacturer:
SONY
Quantity:
4 288
Part Number:
CXA2104S
Manufacturer:
SONY/索尼
Quantity:
20 000
Description
the Zenith TV Multi-channel System and also
corresponds with I
demodulation, SAP (Separate Audio Program)
demodulation, dbx noise reduction. Various kinds of
filters are built in while adjustment and mode control
are all executed through I
Features
• Adjustment free of VCO and filter.
• Audio
• All adjustments are possible through I
• Various built-in filter circuits greatly reduce external
• There is an additional SAP output.
Standard I/O Level
• Input level
• Output level
Pin Configuration (Top View)
COMPIN (Pin 11)
TVOUT-L/R (Pins 2 and 1)
The CXA2104S is an IC designed as a decoder for
reduction decoder are all included in a single chip.
Almost any sort of signal processing is possible
through this IC.
allow for automatic adjustment.
parts.
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.
US Audio Multiplexing Decoder
multiplexing
30
1
2
29
C BUS. Functions include stereo
2
100mVrms
245mVrms (Selected by INSW)
decoder
28
3
2
C BUS.
27
4
490mVrms
and
26
5
dbx
2
C BUS to
25
6
noise
24
7
– 1 –
23
8
Absolute Maximum Ratings (Ta = 25°C)
• Supply voltage
• Operating temperature Topr
• Storage temperature
• Allowable power dissipation
Range of Operating Supply Voltage
Applications
multiplexing TV broadcasting
Structure
required for the use of this device.
TV, VCR and other decoding systems for US audio
Bipolar silicon monolithic IC
A license of the dbx-TV noise reduction system is
22
9
10
21
CXA2104S
20
11
30 pin SDIP (Plastic)
19
12
18
13
Tstg
V
P
CC
D
17
14
–65 to +150
–20 to +75
9 ± 0.5
16
15
1.35
11
E97726B96-PS
°C
°C
W
V
V

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CXA2104S Summary of contents

Page 1

... US Audio Multiplexing Decoder Description The CXA2104S designed as a decoder for the Zenith TV Multi-channel System and also 2 corresponds with I C BUS. Functions include stereo demodulation, SAP (Separate Audio Program) demodulation, dbx noise reduction. Various kinds of filters are built in while adjustment and mode control ...

Page 2

... CXA2104S ...

Page 3

... V CC 7.5k 35µ 2. 10k V CC 147 6 53k 4V – 3 – CXA2104S (Ta = 25° 9V) CC Description TVOUT right channel output pin. TVOUT left channel output pin. Serial data I/O pin. V > 3. < 1.5V IL Serial clock input pin. V > 3. < 1.5V IL Digital block GND. ...

Page 4

... V CC 20k 20k 147 10 20k 20k 10k 20k 26µ 50µ – 4 – CXA2104S Description ( signal output pin. Stereo block PLL loop filter integrating pin. Pilot cancel circuit loop filter integrating pin. (Connect a 1µF capacitor between this pin and GND.) ...

Page 5

... 10k 50µ 15 – 5 – CXA2104S Description Audio multiplexing signal input pin. Band gap reference output pin. (Connect a 10µF capacitor between this pin and GND.) 11k 30k Set the filter and VCO reference current. The reference current is adjusted ...

Page 6

... Vcc 3k 3k 200k 19 – 6 – CXA2104S Description Supply voltage pin. (L–R) signal output pin Input the (L-R) signal from SUBOUT (Pin 17). 21 Input the (SAP) signal from SAPOUT (Pin 20). Vcc Set the time constant for the noise detection circuit. ...

Page 7

... Vcc 20k 7.5µ 4k 50µ – 7 – CXA2104S Description Vcc SAP FM detector output pin. 20 Variable de-emphasis integrating pin. (Connect a 2700pF capacitor and a 3.3k resistor in series between this pin and GND.) Weight the variable de-emphasis control effective value detection circuit. ...

Page 8

... CXA2104S Description Variable de-emphasis output pin. (Connect a 4.7µF non-polar capacitor between Pins 25 and 26.) VCA input pin. Input the variable de-emphasis output signal from Pin 25 via a coupling capacitor. Determine the restoration ...

Page 9

... Pin Pin Symbol No. voltage 30 SOUT 4.0V Equivalent circuit V CC 15k 4 30 200µ 1k – 9 – CXA2104S Description Additional SAP output pin. ...

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... CXA2104S ...

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... CXA2104S ...

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... CXA2104S ...

Page 13

... TVOUT-R output to the minimum. 4) The adjustments in 2 and 3 above are performed to optimize the separation. 5) “WIDEBAND” Adjustment range: ±30% Adjustment bits: 6 bits Adjust this IC through Tuner and IF when this IC is mounted in the set. “SPECTRAL” Adjustment range: ±15% Adjustment bits: 6 bits – 13 – CXA2104S ...

Page 14

... DECODER DET MODE CONTROL FIXED VARIABLE DEEMPHASIS DEEMPHASIS (VCA IN) (VE OUT 4.7µ HPF RMS LPF DET LPF RMS DET Fig 3. dbx-TV block – 14 – CXA2104S 15 SAP dbx-TV NR TELEMETRY FM 10kHz FM 3kHz 50 – 10kHz 6. 15.734kHz H 6 MATRIX (Lch) ...

Page 15

... The current flowing to the resistor connecting IREF (Pin 13) with GND become the reference current carrier as shown in the Fig. 1. First, the SAP signal only is H carrier amplitude. NOISE discrimination is performed by detecting the – 15 – CXA2104S ...

Page 16

... BIT4 BIT3 TEST-DA TEST1 SPECTRAL (6) WIDEBAND (6) DATA1 DATA2 NRSW INSW DATA5 ATTSW STA4 STA5 STA6 BIT4 BIT3 BIT2 NOISE — — – 16 – CXA2104S BIT2 BIT1 BIT0 ATT (4) FOMO SAPC M1 FST DATA3 DATA4 : Don't Care STA7 STA8 BIT1 BIT0 — — ...

Page 17

... SAP broadcasting 0 0 Test mode (Normal standard setting value Contents POWER ON RESET detection; Stereo discrimination of the COMPIN input signal; SAP discrimination of the COMPIN input signal; Noise level discrimination of the SAP signal; – 17 – CXA2104S Contents 1: RESET 1: Stereo 1: SAP 1: Noise ...

Page 18

... In addition, the following outputs are present at Pins 1 and 2. TVOUT-L (Pin 2): SAP BPF OUT TVOUT-R (Pin 1): NR BPF OUT FST (1): Select forced STEREO mode 0 = Normal mode 1 = Forced stereo mode NRSW (1): Select stereo mode or SAP mode 0 = Stereo mode 1 = SAP mode – 18 – CXA2104S ...

Page 19

... MVCA is passed INSW (1): Select standard input level of COMPIN (Pin 11 245mVrms 1 = 100mVrms SAPC (1): Select the SAP signal output mode When there is no SAP signal, the conditions for selecting SAP output are selected by SAPC output is selected 1 = SAP output is selected – 19 – CXA2104S ...

Page 20

... NRSW = 1 (SAP output) • Regardless of the presence of SAP discrimination, dbx input: “SAP” left channel: SAP, right channel: SAP However, when there is no SAP, SAPOUT output is soft muted (–7dB) “Forced MONO” “MUTE” – 20 – CXA2104S SAPC = 1 ...

Page 21

... CXA2104S Output dbx input SAPC Lch Rch 1 MUTE SAP SAP SAP 1 SAP SAP 1 MUTE (SAP) (SAP) (SAP) 1 (SAP (SAP – ...

Page 22

... CXA2104S Output dbx input SAPC Lch Rch 0 MUTE MUTE MUTE (SAP) (SAP) (SAP) 0 (SAP (SAP – ...

Page 23

... HD t LOW t HIGH t : STA DAT DAT STO HIGH t : DAT t : DAT SU HD – 23 – CXA2104S Min. Typ. Max. Unit 3.0 — 5.0 V — 1.5 0 — 10 — µA — 10 — 0 — 0 — — mA — — — 100 ...

Page 24

... C signals, SDA (Serial DATA) and SCL (Serial CLOCK) signals. SDA is a bidirectional signal. • Accordingly there are 3 values outputs and HIZ • transfer begins with Start Condition and ends with Stop Condition. Start Condition S SDA SCL HIZ L – 24 – CXA2104S Stop Condition P ...

Page 25

... P ACK 2 C controller) H during Read ACK MSB DATA – 25 – CXA2104S MSB LSB HIZ HIZ ACK Sub Address ACK Data can be transferred in 8-bit units to be set as required. Sub address is incremented automatically. HIZ DATA ...

Page 26

... Measurement point: TVOUT-L/R 1.0 Standard level (100%) –10 0 Input level [dB] Input level vs. Distortion characteristics 2 (Stereo) Input signal: Stereo L = –R (dbx-TVNR ON), 1kHz 0dB = 100% modulation level 9V, 30kHz using LPF, ST mode CC Measurement point: TVOUT-L/R 1.0 10 –10 10 – 26 – CXA2104S Standard level (100 Input level [dB] ...

Page 27

... Main LPF and Sub LPF frequency characteristics –10 –20 –30 –40 – 100 Additional SAP frequency characteristics 100 90 500 80 100% modulation 70 60 30% modulation 50 100 10% modulation modulation 0.1 120 – 27 – CXA2104S 100 Frequency [kHz] 1.0 10 Frequency [kHz] ...

Page 28

... SDIP (PLASTIC 1.778 0.5 ± 0.1 0.9 ± 0.15 PACKAGE STRUCTURE MOLDING COMPOUND LEAD TREATMENT LEAD MATERIAL PACKAGE MASS – 28 – CXA2104S 0° to 15° Two kinds of package surface: 1.All mat surface type. 2.All mirror surface type. EPOXY RESIN SOLDER/PALLADIUM PLATING COPPER ALLOY 1.8g ...

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