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參數(shù)資料
| 型號： | TDA5200 |
| 廠商： | INFINEON TECHNOLOGIES AG |
| 元件分類： | 參考電壓二極管 |
| 英文描述： | surface mount silicon Zener diodes |
| 中文描述： | 表面貼裝硅穩(wěn)壓二極管 |
| 文件頁數(shù)： | 20/43頁 |
| 文件大?。?/td> | 911K |
| 代理商： | TDA5200 |
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Functional Description
3 - 12
TDA 5200
Wireless Components
Specification, March 2000
3.4.7
Data Slicer
The data slicer is a fast comparator with a bandwidth of 100 kHz. This allows
for a maximum receive data rate of approximately 120kBaud. The maximum
achievable data rate also depends on the IF Filter bandwidth and the local oscil-
lator tolerance values. Both inputs are accessible. The output delivers a digital
data signal (CMOS-like levels) for the detector. The self-adjusting threshold on
pin 20 its generated by RC-term or peak detector depending on the baseband
coding scheme. The data slicer threshold generation alternatives are described
in more detail in Section 4.5.
3.4.8
Peak Detector
The peak detector generates a DC voltage which is proportional to the peak
value of the receive data signal. An external RC network is necessary. The out-
put can be used as an indicator for the signal strength and also as a reference
for the data slicer. The maximum output current is 500μA.
3.4.9
Bandgap Reference Circuitry
A Bandgap Reference Circuit provides a temperature stable reference voltage
for the device. A power down mode is available to switch off all subcircuits which
is controlled by the PWDN pin (Pin 27) as shown in the following table. The sup-
ply current drawn in this case is typically 50nA. .
Table 3-4 PDWN pin operating states
PDWN
Operating State
Open or tied to ground
Powerdown Mode
Tied to Vs
Receiver On
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| TDA5201_10 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:ASK Single Conversion Receiver |
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