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)： 56/88頁
文件大小： 2086K
代理商： TDA5251F1
TDA5251 F1
Version 1.0
Application
Preliminary Specification
56
2003-02-18
Confidential
Default values
In case of using the evaluation board, the crystal with its typical parameters (fp=13.125MHz,
C
1
=6.5fF, C
0
=1.8pF, C
L
=20pF) and external capacitors with Cv1=27pF, Cv2=1.0pF, Cv3=15pF
each are used the following default states are set in the device
.
3.2.7
Chip and System Tolerances
Quartz: fp=13.125MHz; C1=6.5fF; C0=1,8pF; CL=20pF (typical values)
Cv1=27pF, Cv2=1.0pF, Cv3=15pF
Tolerance values in
Table 3-8
are valid, if pin 21 is not connected. Establishing the connection to
pin 21 the tolerances increase by +/- 16ppm (internal capacitors), if internal tuning is not used.
Concerning the frequency tolerances of the whole system also crystal tolerances (tuning
tolerances, temperature stability, tolerance of CL) have to be considered.
In addition to the chip tolerances also the crystal and external component tolerances have to be
considered in the tuning and non-tuning case.
Table 3-6
Default oscillator settings
Operating state
ASK-TX / FSK-RX
+FSK-TX / ASK-RX
-FSK-TX
Frequency
315.0 MHz
+30 kHz
-30 kHz
Table 3-7
Internal Tuning
Part
Frequency tolerance
@ 315MHz
+/- 1.3kHz
+/- 2.5kHz
+/- 0.6kHz
+/- 4.4kHz
Rel. tolerance
Frequency set accuracy
Temperature (-40...+85C)
Supply Voltage(2.1...5.5V)
Total
+/- 4ppm
+/- 8ppm
+/- 2ppm
+/- 14ppm
Table 3-8
Default Setup (without internal tuning & without Pin21 usage)
Part
Frequency tolerance
@ 315MHz
+/-2.2kHz
+/- 2.5kHz
+/- 2.5kHz
+/- 0.6kHz
+/- 7.8kHz
Rel. tolerance
Internal capacitors (+/- 10%)
Inductivity of the crystal oscillator
Temperature (-40...+85C)
Supply Voltage (2.1...5.5V)
Total
+/- 7ppm
+/-8ppm
+/- 8ppm
+/- 2ppm
+/- 25ppm
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