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): 49/88頁
文件大?。?/td> 2086K
代理商: TDA5251F1
TDA5251 F1
Version 1.0
Application
Preliminary Specification
49
2003-02-18
Confidential
QOSZ_NIC.wmf
Figure 3-13
Crystal Oscillator
C
L
:
:
L
OSC
:
crystal load capacitance for nominal frequency
angular frequency
inductivity of the crystal oscillator - typ: 2.2 H with pad of board
2.1μH without pad
With the aid of this formula it becomes obvious that the higher the serial capacitance C
V
is, the
higher is the influence of L
OSC
.
The tolerance of the internal oscillator inductivity is much higher, so the inductivity is the dominating
value for the tolerance.
FSK modulation and tuning are achieved by a variation of C
v
.
In case of small frequency deviations (up to +/- 1000 ppm), the desired load capacitances for FSK
modulation are frequency depending and can be calculated with the formula below.
C
L
:
C
0
:
C
1
:
f:
N:
f:
crystal load capacitance for nominal frequency
shunt capacitance of the crystal
motional capacitance of the crystal
crystal oscillator frequency
division ratio of the PLL
peak frequency deviation
-R
L
OSC
f, C
L
C
V
TDA 5250
OSC
L
L
V
OSC
L
V
L
C
C
C
C
2
2
1
1
1
1
[3 – 17]
CL
CL
-----------------------------------------------------------------------------------------
C0
f
N f
----------
1
2
----------C0
C1
+
CL
+
+
1
N f
-----f
1
2
----------C0
C1
CL
+
=
[3 – 18]
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