- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄383989 > TDA5251F1 (INFINEON TECHNOLOGIES AG) ASK/FSK 315MHz Wireless Transceiver PDF資料下載
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/ FSK信號315MHz的無線收發(fā)器 |
| 文件頁數(shù)： | 50/88頁 |
| 文件大?。?/td> | 2086K |
| 代理商： | TDA5251F1 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁當(dāng)前第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁
TDA5251 F1
Version 1.0
Application
Preliminary Specification
50
2003-02-18
Confidential
With C
L+
and C
L-
the necessary C
v+
for FSK HIGH and C
v-
for FSK LOW can be calculated.
Alternatively, an external AC coupled (10nF in series to 1k ) signal can be applied at
pin 19 (Xout)
.
The drive level should be approximately 100mVpp.
3.2.1
Synthesizer Frequency setting
Generating ASK and FSK modulation 3 setable frequencies are necessary.
3.2.1.1
Possible crystal oscillator frequencies
The resulting possible crystal oscillator frequencies are shown in the following
Figure 3-14
free_reg.wmf
Figure 3-14
possible crystal oscillator frequencies
In ASK receive mode the crystal oscillator is set to frequency f
2
to realize the necessary frequency
offset to receive the ASK signal at f
0
*N (N: division ratio of the PLL).
To set the 3 different frequencies 3 different C
v
are necessary. Via internal switches 3 external
capacitors can be combined to generate the necessary C
v
in case of ASK- or FSK-modulation.
Internal banks of switchable capacitors allow the finetuning of these frequencies.
3.2.2
Transmit/Receive ASK/FSK Frequency Assignment
Depending on whether the device operates in transmit or receive mode or whether it operates in
ASK or FSK the following cases can be distinguished:
3.2.2.1
FSK-mode
In
transmit
mode the two frequencies representing logical HIGH and LOW data states have to be
adjusted depending on the intended frequency deviation and separately according to the following
formulas:
f
COSC HI
= (f
RF
+ f
DEV
) / 24
f
COSC LOW
= (f
RF
- f
DEV
) / 24
Nominal
Frequency
Deviation
Deviation
RX:
TX: FSK-
FSK ASK
ASK FSK+
f
f
f
0
1
2
[3 – 19]
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TDA8050A | QPSK transmitter |
| TDA8315TD-G | TV/Video Sync Circuit |
| TDA837X | I2C-Bus Controlled Economy PAL/NTSC and NTSC TV-Processors |
| TDA8443AN | TV Switch Circuit |
| TDA8451 | |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。