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參數(shù)資料
| 型號： | TDA5251F1 |
| 廠商： | INFINEON TECHNOLOGIES AG |
| 英文描述： | ASK/FSK 315MHz Wireless Transceiver |
| 中文描述： | 詢價(jià)/ FSK信號315MHz的無線收發(fā)器 |
| 文件頁數(shù)： | 57/88頁 |
| 文件大?。?/td> | 2086K |
| 代理商： | TDA5251F1 |
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TDA5251 F1
Version 1.0
Application
Preliminary Specification
57
2003-02-18
Confidential
In case of internal tuning: The crystal on the evaluation board has a temperature stability of +/-
20ppm (or +/- 6.3kHz), which must be added to the total tolerances in worst case. It’s possible to
choose a crystal compensating the oscillators temperature drift in a certain range and thus the
overall temperature tolerances are minimized.
In case of default setup (without internal tuning and without usage of pin 21) the temperature
stability and tuning tolerance of the crystal as well as the tolerance of the external capacitors (+/-
0.1pF) have to be added. The crystal on the evaluation board has a temperature stability of +/-
20ppm (or +/- 6.3kHz) and a tuning tolerance of +/- 10ppm (or +/- 3.2 kHz). The external capacitors
add a tolerance of +/- 3.5ppm (or +/- 1.1kHz). Here also the overall temperature tolerances can be
reduced when applying an appropriate temperature drift of the crystal.
The frequency stabilities of both the receiver and the transmitter and the modulation bandwidth set
the limit for the bandwidth of the IQ filter. To achieve a high receiver sensitivity and efficient
suppression of adjacent interference signals, the narrowest possible IQ bandwidth should be
realized (
see Section 3.3
).
3.3
IQ-Filter
The IQ-Filter should be set to values corresponding to the RF-bandwidth of the received RF signal
via the
D1
to
D3
bits of the
LPF
register (subaddress 03H).
Table 3-9
D3
3dB cutoff frequencies I/Q Filter
D2
D1
nominal f
-3dB
in kHz
(programmable)
resulting effective
channel
bandwidth in kHz
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
not used
350
250
200
150 (default)
100
50
not used
700
500
400
300
200
100
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| TDA5251F1_07 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:ASK/FSK 315MHz Wireless Transceiver |
| TDA5251XUMA1 | 制造商:Infineon Technologies AG 功能描述:RF Transceiver ASK/FSK 2.5V/3.3V/5V T/R 制造商:Infineon Technologies AG 功能描述:CONTROL - Tape and Reel 制造商:Infineon Technologies AG 功能描述:TXRX FSK/ASK SGL LP TSSOP-38 |
| TDA5252 | 功能描述:射頻接收器 ASK/FSK WIRELESS TRANSCEIVER RoHS:否 制造商:Skyworks Solutions, Inc. 類型:GPS Receiver 封裝 / 箱體:QFN-24 工作頻率:4.092 MHz 工作電源電壓:3.3 V 封裝:Reel |
| TDA5252G2 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:ASK/FSK 915MHz Wireless Transceiver |
| TDA5252XUMA1 | 制造商:Infineon Technologies AG 功能描述:RF Transceiver ASK/FSK 2.5V/3.3V/5V 38-Pin TSSOP T/R 制造商:Infineon Technologies AG 功能描述:CONTROL - Tape and Reel 制造商:Infineon Technologies AG 功能描述:TXRX FSK/ASK SGL LP TSSOP-38 |
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