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TDA9875A Scheda tecnica(PDF) 4 Page - NXP Semiconductors

Il numero della parte TDA9875A
Spiegazioni elettronici  Digital TV Sound Processor DTVSP
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Produttore elettronici  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

TDA9875A Scheda tecnica(HTML) 4 Page - NXP Semiconductors

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1999 Dec 20
4
Philips Semiconductors
Product specification
Digital TV Sound Processor (DTVSP)
TDA9875A
2.1.1
ANALOG 2-CARRIER SYSTEMS
Table 1
Frequency modulation
Table 2
Identification for A2 systems
2.1.2
2-CARRIER SYSTEMS WITH NICAM
Table 3
NICAM
Notes
1. See
“EBU specification” or equivalent specification.
2. Not yet defined.
STANDARD
SOUND
SYSTEM
CARRIER
FREQUENCY
(MHz)
FM DEVIATION (kHz)
MODULATION
BANDWIDTH/
DE-EMPHASIS
(kHz/
µs)
NOM.
MAX.
OVER
SC1
SC2
M
mono
4.5
15
25
50
mono
15/75
M
A2+
4.5/4.724
15
25
50
1
2(L+R)
1
2(L − R)
15/75 (Korea)
B/G
A2
5.5/5.742
27
50
80
1
2(L + R)
R
15/50
I
mono
6.0
27
50
80
mono
15/50
D/K
A2
6.5/6.742
27
50
80
1
2(L + R)
R
15/50
D/K
A2*
6.5/6.258
27
50
80
1
2(L + R)
R
15/50
PARAMETER
A2/A2*
A2+ (KOREA)
Pilot frequency
54.6875 kHz = 3.5
× line frequency 55.0699 kHz = 3.5 × line frequency
Stereo identification frequency
Dual identification frequency
AM modulation depth
50%
50%
STANDARD
SC1
SC2
NICAM
(MHz)
DE-
EMPHASIS
ROLL-
OFF (%)
NICAM
CODING
FREQUENCY
(MHz)
TYPE
MODULATION
INDEX
(%)
DEVIATION
(kHz)
NOM. MAX. NOM. MAX.
B/G
5.5
FM
−−
27
50
5.85
J17
40
note 1
I
6.0
FM
−−
27
50
6.552
J17
100
note 1
D/K
6.5
FM
−−
27
50
5.85
J17
40
note 2
L
6.5
AM
54
100
−−
5.85
J17
40
note 1
117.5 Hz
line frequency
133
-------------------------------------
=
149.9 Hz
line frequency
105
-------------------------------------
=
274.1 Hz
line frequency
57
-------------------------------------
=
276.0 Hz
line frequency
57
-------------------------------------
=


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