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參數(shù)資料
| 型號： | TUA4401 |
| 英文描述： | FM Receiver Circuit |
| 中文描述： | 調(diào)頻接收機電路 |
| 文件頁數(shù)： | 16/32頁 |
| 文件大?。?/td> | 832K |
| 代理商： | TUA4401 |
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Specification
TUA 4401
Semiconductor Group
17
1.6.99
3W bus mode
In this mode pin4 (BUS_MODE) =high. Pin6 (SDA) is in this mode a bidirectional input / output.
Pin8 (BUS_ENA) is used to activate the bus interface to allow the transfer of data (SDA) to / from
the device. When BUS_ENA is in an inactive high state, shifting is inhibited. Data Transition:
Data transition on the pin SDA must only occur when the clock SCL is low. To transfer data to / from
the device, BUS_ENA (which must start inactive high) is taken low, a serial transfer is made via
SDA, DOUT and CLK and BUS_ENA is taken back high. The bit stream needs neither the chip
address.
Data Transfer Write Mode:
To start the communication, the BUS_ENA is taken low. The desired sub address byte and data
bytes must be followed. The subaddresses determines which one of the 9 data bytes
(00H...07H,0BH) is transmitted first. At the end of data transition the BUS_ENA must be high.
Data Transfer Read Mode:
To start the communication in the read mode, the BUS_ENA is taken low, followed by the sub
address read (82H). After that the device is ready to read out the 16bit data register 82H. At the end
of data transition the BUS_ENA must be high.
8.10 PLL Synthesizer
R / N Counter
The TUA 4401 has 2 identical 16bit counter for R and N path. Input frequency for the R-counter is
the buffered XTAL-frequency (61.5MHz). Tuning steps can be selected by the 16bit R-counter from
f
R
= 6.25kHz...100kHz. Input frequency for the N-counter is the buffered LO-frequency (in FM mode
98.2MHz...118.7MHz).
Three State Phase Comparator
The phase comparator generates a phase error signal according to phase difference between f
R
(R
counter output) and f
N
(N counter output).This phase error signal drives the charge pump current
generator. Polarity is fixed positiv for this application note.
Charge Pump
The charge pump generates signed pulses of current. 4 current values and 2 outputs are available.
Loop Amp
The integrated rail to rail loop amplifier allows an active loop filter design with external components.
Two modes are avialiable with status bit D11: high speed and normal mode.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TUA4401K | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:FM Car Radio IC with PLL |
| TUA6010 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:Wireless Components |
| TUA6010X | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:RF Mixer |
| TUA6010XS | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| TUA6012 | 制造商:SIEMENS 制造商全稱:Siemens Semiconductor Group 功能描述:Components for Entertainment Electronics |
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