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부품번호 | TDA9874A 기능 |
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기능 | Digital TV sound demodulator/decoder | ||
제조업체 | NXP Semiconductors | ||
로고 | |||
전체 68 페이지수
INTEGRATED CIRCUITS
DATA SHEET
TDA9874A
Digital TV sound
demodulator/decoder
Preliminary specification
File under Integrated Circuits, IC02
1999 Dec 03
Philips Semiconductors
Digital TV sound demodulator/decoder
Preliminary specification
TDA9874A
2.1.1 ANALOG 2-CARRIER SYSTEMS
Table 1 Frequency modulation
STANDARD
M
M
B/G
I
D/K (2)
D/K (1)
D/K (3)
SOUND
SYSTEM
mono
A2
A2
mono
A2
A2
A2
CARRIER FM DEVIATION (kHz)
FREQUENCY
(MHz)
NOM. MAX. OVER.
4.5 15 25 50
4.5/4.724 15 25 50
5.5/5.742 27 50 80
6.0 27 50 80
6.5/6.742 27 50 80
6.5/6.258 27 50 80
6.5/5.742 27 50 80
MODULATION
SC1
mono
1⁄2(L + R)
1⁄2(L + R)
mono
1⁄2(L + R)
1⁄2(L + R)
1⁄2(L + R)
SC2
−
1⁄2(L − R)
R
−
R
R
R
BANDWIDTH/
DE-EMPHASIS
(kHz/µs)
15/75
15/75 (Korea)
15/50
15/50
15/50
15/50
15/50
Table 2 Identification for A2 systems
PARAMETER
A2; A2*
Pilot frequency
54.6875 kHz = 3.5 × line frequency
Stereo identification frequency 117.5 Hz = l--i--n----e-----f--r1--e-3--q--3--u---e---n----c---y-
Dual identification frequency 274.1 Hz = l--i--n----e-----f--r--5e---7q----u---e---n----c---y-
AM modulation depth
50%
A2+ (KOREA)
55.0699 kHz = 3.5 × line frequency
149.9 Hz = l--i--n----e-----f--r1--e-0--q--5--u---e---n----c---y-
276.0 Hz = l--i--n----e-----f--r--5e---7q----u---e---n----c---y-
50%
2.1.2 2-CARRIER SYSTEMS WITH NICAM
Table 3 NICAM
STANDARD
FREQUENCY
(MHz)
TYPE
SC1
MODULATION
INDEX (%)
DEVIATION
(kHz)
SC2
(MHz)
NICAM
DE-
EMPHASIS
ROLL-
OFF (%)
NICAM
CODING
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
Notes
1. See “EBU NICAM 728 specification” or equivalent specification.
2. Not yet officially defined.
1999 Dec 03
4
4페이지 Philips Semiconductors
Digital TV sound demodulator/decoder
Preliminary specification
TDA9874A
5 PINNING
SYMBOL
EXTIR
EXTIL
Vref2
P2
OUTM
VSSA4
OUTL
OUTR
VDDA1
VSSA1
VSSD1
VDDD1
VSSD2
n.c.
TP2
NICAM
TP1
PCLK
ADDR1
XTALO
XTALI
TP3
TEST2
Iref
ADDR2
VSSA2
VDEC
TEST1
SIF2
Vref1
SIF1
CRESET
VSSA3
VDDA3
SCL
SDA
SDO
WS
PIN
SDIP42
QFP44
1 39
2 40
3 41
4 42
5 43
6 44
71
82
93
10 4
11 5
12 6
13 7
−8
14 9
15 10
16 11
17 12
18 13
19 14
20 15
− 16
21 17
22 18
23 19
24 20
25 21
26 22
27 23
28 24
29 25
30 26
31 27
32 28
33 29
34 30
35 31
36 32
DESCRIPTION
external audio input right channel
external audio input left channel
analog reference voltage for DAC and operational amplifiers
second general purpose I/O pin
analog output right
analog ground supply 4 for analog back-end circuitry
analog output left
analog output right
analog supply voltage 1; back-end circuitry 5 V
analog ground supply 1; back-end circuitry
digital ground supply 1; core circuitry
digital supply voltage 1; core voltage regulator circuitry
digital ground supply 2; core circuitry
not connected
additional test pin 2; connected to VSSD for normal operation
serial NICAM data output (at 728 kHz)
additional test pin 1; connected to VSSD for normal operation
NICAM clock output (at 728 kHz)
first I2C-bus slave address modifier input
crystal oscillator output
crystal oscillator input
additional test pin 3; connected to VSSD for normal operation
test pin 2; connected to VSSD for normal operation
resistor for reference current generation; front-end circuitry
second I2C-bus slave address modifier input
analog ground supply 2; analog front-end circuitry
analog front-end circuitry supply voltage decoupling
test pin 1; connected to VSSD for normal operation
sound IF input 2
reference voltage; for analog front-end circuitry
sound IF input 1
capacitor for Power-on reset
digital ground supply 3; front-end circuitry
analog front-end circuitry regulator supply voltage 3 (5 V)
I2C-bus serial clock input
I2C-bus serial data input/output
I2S-bus serial data output
I2S-bus word select input/output
1999 Dec 03
7
7페이지 | |||
구 성 | 총 68 페이지수 | ||
다운로드 | [ TDA9874A.PDF 데이터시트 ] |
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부품번호 | 상세설명 및 기능 | 제조사 |
TDA9874A | Digital TV sound demodulator/decoder | NXP Semiconductors |
TDA9874H | Digital TV sound demodulator/decoder | NXP Semiconductors |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |