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參數(shù)資料
| 型號： | TDA9884TS |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 接收器 |
| 英文描述： | I2C-bus controlled multistandard alignment-free IF-PLL for mobile reception |
| 中文描述： | AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO24 |
| 封裝： | 5.30 MM, PLASTIC, SOT-340-1, MO-150, SSOP-24 |
| 文件頁數(shù)： | 36/55頁 |
| 文件大小： | 231K |
| 代理商： | TDA9884TS |
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2003 Nov 28
36
Philips Semiconductors
Product specification
I
2
C-bus controlled multistandard alignment-free
IF-PLL for mobile reception
TDA9884TS
22. For all S/N measurements the VIF modulator in use has to meet the following specifications:
a) Incidental phase modulation for black-to-white jump less than 0.5 degrees.
b) QSS AF performance, measured with the television demodulator AMF2 (audio output, weighted S/N ratio) better
than 60 dB (at deviation 27 kHz) for 6 kHz sine wave black-to-white video modulation.
c) Picture-to-sound carrier ratio PC/SC
1
= 13 dB (transmitter).
23. Calculation of the loop filter parameters can be done approximately using the following formulae:
The formulae are only valid under the following conditions:
≤
1 and C
S
> 5C
P
where:
V
K
O
is the VCO steepness
or
;
K
D
is the phase detector steepness
;
R is the loop resistor;
C
S
is the series capacitor;
C
P
is the parallel capacitor;
f
o
is the natural frequency of the PLL;
BL
3dB
is the loop bandwidth for
3 dB;
is the damping factor. For examples, see Table 20.
24. The PC/SC ratio is calculated as the addition of TV transmitter PC/SC
1
ratio and SAW filter PC/SC
1
ratio. This PC/SC
ratio is necessary to achieve the S/N
W
values as noted. A different PC/SC ratio will change these values.
25. Measurements taken with SAW filter G1984 (Siemens) for vision and sound IF (sound shelf: 14 dB).
Picture-to-sound carrier ratio of transmitter PC/SC = 13 dB. Input level on pins VIF1 and VIF2 of
V
i(SIF)
= 10 mV (RMS) sync level, 27 kHz FM deviation for sound carrier, f
AF
= 400 Hz. Measurements in accordance
with “CCIR 468” De-emphasis is 50
μ
s.
26. The QSS signal output on pin SIOMAD is analysed by a test demodulator TDA9820. The S/N ratio of this device is
more than 60 dB, related to a deviation of
±
27 kHz, in accordance with “CCIR 468”
27. Measurements taken with SAW filter K3953 for vision IF (suppressed sound carrier) and K9453 for sound IF
(suppressed picture carrier). Input level V
i(SIF)
= 10 mV (RMS), 27 kHz (54 % FM deviation).
28. Measurements taken with SAW filter K9453 (Siemens) for AM sound IF (suppressed picture carrier).
29. The value of C
x
determines the accuracy of the resonance frequency of the crystal. It depends on the type of crystal
used.
30. Pin REF is able to operate as a 1-pin crystal oscillator input as well as an external reference signal input, e.g. from
the tuning system.
31. The SDA and SCL lines will not be pulled down if V
CC
is switched off.
32. The AC characteristics are in accordance with the I
2
C-bus specification for fast mode (maximum clock frequency is
400 kHz). Information about the I
2
C-bus can be found in the brochure “The I
2
C-bus and how to use it”(order number
9398 393 40011).
33. Port P1 and port P2 are open-collector outputs.
f
o
1
π
2
K
K
D
P
----C
=
2R K
O
K
D
C
P
---------------1
=
BL
3dB
–
f
o
1.55
(
2
–
)
=
rad
2
π
V
Hz
A
rad
--------
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TDA9884TS/V1 | 功能描述:調(diào)節(jié)器/解調(diào)器 MOBILE VIF AND SIF DEMODULATOR RoHS:否 制造商:Texas Instruments 封裝 / 箱體:PVQFN-N24 封裝:Reel |
| TDA9884TS/V1,112 | 功能描述:調(diào)節(jié)器/解調(diào)器 MOBILE VIF AND SIF RoHS:否 制造商:Texas Instruments 封裝 / 箱體:PVQFN-N24 封裝:Reel |
| TDA9884TS/V1,118 | 功能描述:調(diào)節(jié)器/解調(diào)器 MOBILE VIF AND SIF RoHS:否 制造商:Texas Instruments 封裝 / 箱體:PVQFN-N24 封裝:Reel |
| TDA9884TS/V1/S1,11 | 功能描述:調(diào)節(jié)器/解調(diào)器 MOBILE VIF AND SIF RoHS:否 制造商:Texas Instruments 封裝 / 箱體:PVQFN-N24 封裝:Reel |
| TDA9884TS/V1/S1,118 | 制造商:NXP Semiconductors 功能描述:PHATDA9884TS/V1/S1.118 MOBILE VIF/SIF |
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