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參數(shù)資料
| 型號(hào)： | TDA9874AH |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 接收器 |
| 英文描述： | Digital TV sound demodulator/decoder |
| 中文描述： | AM/FM, AUDIO DEMODULATOR, PQFP44 |
| 封裝： | 14 X 14 MM, 2.20 MM HEIGHT, PLASTIC, SOT-205-1, QFP-44 |
| 文件頁(yè)數(shù)： | 22/68頁(yè) |
| 文件大?。?/td> | 231K |
| 代理商： | TDA9874AH |
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1999 Dec 03
22
Philips Semiconductors
Preliminary specification
Digital TV sound demodulator/decoder
TDA9874A
Notes
1.
Definition of levels and level setting:
a) The full-scale level for analog audio signals is V
FS
= 1.4 V (RMS). The nominal level at the digital crossbar switch
is defined at
15 dB (FS).
b) Nominal audio input levels: external, mono: 500 mV;
9 dB (FS).
Audio performance is limited by the dynamic range of the NICAM 728 system. Due to companding, the quantization
noise is never lower than
62 dB with respect to the input level.
FM source; in dual mode only A (respectively B) signal modulated; measured at B (respectively A) channel output;
V
o
= 1 V (RMS) of modulated channel.
FM source; in stereo mode only L (respectively R) signal modulated; measured at R (respectively L) channel output;
V
o
= 1 V (RMS) of modulated channel.
If the supply voltage for the TDA9874A is switched off, because of the ESD protection circuitry, all audio input pins
are short-circuited.
The Philips crystal (order number 9922 520 20106) is suitable for this application.
2.
3.
4.
5.
6.
Crystal specification (fundamental mode)
f
xtal
C
L
C
1
C
0
Φ
pull
crystal frequency
load capacitance
series capacitance
parallel capacitance
pulling sensitivity
note 6
24.576
20
20
25
7
MHz
pF
fF
pF
C
L
changed from
18 to 16 pF
R
R
R
N
equivalent series resistance
equivalent series resistance of
unwanted mode
temperature range
adjustment tolerance
drift
ageing
at nominal frequency
2R
R
30
T
X
J
X
D
X
A
20
+25
+70
±
30
±
30
±
5
°
C
10
6
10
6
across temperature range
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
pF
6
–
10
6
–
year
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TDA9874AH/V2,557 | 功能描述:音頻放大器 DIGITAL STEREO DECODER VCR RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TDA9874AHB | 功能描述:音頻放大器 DIGITAL STEREO DECODER VCR RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TDA9874APS | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Digital TV sound demodulator/decoder |
| TDA9874H | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Digital TV sound demodulator/decoder |
| TDA9875 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Digital TV Sound Processor DTVSP |
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