參數(shù)資料
型號: TUA4401
廠商: INFINEON TECHNOLOGIES AG
元件分類: 接收器
英文描述: FM, AUDIO SINGLE CHIP RECEIVER, PQFP64
文件頁數(shù): 33/36頁
文件大小: 1129K
代理商: TUA4401
TUA 4401
CAR RADIO
Wireless Products
14.06.99
PAGE: 5
6. Crystal oscillator
A master crystal oscillator provides all necessary clock frequencies for the
whole IC. A 61.5MHz crystal is used in 3rd harmonic mode.
The oscillator frequency can be fine tuned with a serial bus controlled 4 bit D/A
converter.
The crystal frequency is used as reference frequency for the PLL oscillator and
IF counter. It is also used as clock for the DACs and ADCs. Finally the crystal
frequency divided by 6 (10.25MHz) is available at a pin, it can be disabled with
the serial bus to avoid undesired couplings.
7. Output ports
PORT_1 / 2 are NMOS open drain outputs.
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參數(shù)描述
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