參數(shù)資料
型號: 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): 18/64頁
文件大小: 890K
代理商: TUA6045-2
Data Sheet
25
Revision 3.1, 2006-12-19
TUA 6045-2
TAIFUN 3
Functional Description
3.4.8
IF switch, Loop thru
For the alignment procedure of the tuner module two programmable switches are
integrated to bypass the bandpass, the SAW driver and the SAW filter. The first switch
called “IF switch” can switch between the mixer output signal and the bandpass output
signal. The second switch called “Loop thru” can switch between the signal after the first
stage of the IF AGC amplifier and the SAW filter output signal.
Figure 3
Functional Block Diagram of IF switch and Loop thru
Band-
pass
MIXER
IF switch
SAWDRV
MIXER
input
IF
output
SAW
Filter
IF AGC amplifier
Loop thru
IF switch control = bit 15 of sub address 03H
Loop thru control = bit 14 of sub address 03H
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