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參數(shù)資料
| 型號(hào)： | TUA6045-2 |
| 廠商： | INFINEON TECHNOLOGIES AG |
| 元件分類： | 調(diào)諧器 |
| 英文描述： | 3-BAND, VIDEO TUNER, QCC48 |
| 封裝： | VQFN-48 |
| 文件頁數(shù)： | 36/64頁 |
| 文件大?。?/td> | 890K |
| 代理商： | TUA6045-2 |
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Data Sheet
41
Revision 3.1, 2006-12-19
TUA 6045-2
TAIFUN 3
Reference
5.2
Bus Interface
Table 7
Pin Function
1) Values are referred to Figure 4.2 "Application circuit for hybrid application" on Page 27 and f
IF =36 MHz,
unless stated otherwise.
2) The RF frequency range is defined by the oscillator frequency range and the intermediate frequency (IF).
3) Local oscillator FM modulation resulting from I
2C communication is measured at the IF output using a
modulation analyzer with a peak to peak detector ((P
+ + P-) / 2) and a post detection filter 20 Hz - 100 kHz. The
I
2C messages are sent to the tuner in such a way that the tuner is addressed but the content of the PLL registers
are not altered. The refresh interval between each data set shall be 20 ms to 1 s.
4) (N+5) -1 MHz is defined as the input level of channel N+5, at frequency 1 MHz lower, causing 100 kHz FM
sidebands 30 dB below the wanted carrier.
5) Impedance measured with differential 2-port measurement at input or output. Input and output pins directly
connected to measurement equipment with 50
strip lines.
6) Limits are related to the tank circuit used in the application board. Frequency bands may be adjusted by the
choice of external components.
7) The supply ripple susceptibility is a sideband measurement using a spectrum analyzer connected to the IF
output. An unmodulated RF signal with a level of 80 dBV is applied to the test board RF input. A sinewave
signal with a defined frequency is superposed onto the supply voltage (see Figure 16 "Ripple susceptibility
measurement" on Page 62). The specified value is the worst case in the frequency range.
8) This is the level of divider interferences close to the IF frequency. For example channel S3: f
OSC = 158.15 MHz,
1/4 f
OSC = 39.5375 MHz. The rejection has to be greater than 60 dB for an SAW driver output of 100 dBV.
9) Crystal oscillator interference means the 4 MHz sidebands caused by the crystal oscillator. The rejection has
to be greater than 60 dB for an SAW driver output of 100 dBV.
10) The reference frequency rejection is the level of reference frequency sidebands (e.g. 62.5 kHz) related to the
carrier. The rejection has to be greater than 60 dB for an SAW driver output of 100dBV.
11) Channel S02 beat is the interfering product of f
RFpix, fIF and fOSC of channel S02, fBEAT = 37.35 MHz. The possible
mechanisms are f
OSC - 2 x fIF or 2 x fRFpix - fOSC.
Pin Designation
BUSMODE
SDA / Data
SCL / Clock
CAS / EN
Function
bus mode
select
serial data
clock
I
2C: chip address
select, 3-W: enable
I
2C mode
0
data in/out
clock in
four chip addresses
1)
3-Wire mode
1 or open
0: chip is addressed
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