參數(shù)資料
型號: TDA5100A
廠商: INFINEON TECHNOLOGIES AG
英文描述: ASK Transmitter 434 MHz
中文描述: ASK發(fā)射434兆赫
文件頁數(shù): 23/29頁
文件大小: 936K
代理商: TDA5100A
To achieve a low current consumption and a low
spurious radiation, the largest possible RL should be chosen.
Applications
4 - 6
TDA 5100 A
preliminary
Wireless Components
Specification, March 2001
2. Design hints on the buffered clock output (CLKOUT)
The CLKOUT pin is an open collector output. An external pull up resistor (RL)
should be connected between this pin and the positive supply voltage. The
value of RL is depending on the clock frequency and the load capacitance CLD
(PCB board plus input capacitance of the microcontroller). RL can be calculated
to:
Remark:
Table 4-2
fCLKOUT=3.39 MHz
CL
[
pF
]
5
RL
[
kOhm
]
6.8
10
3.3
20
1.8
CLD
fCLKOUT
RL
*
8
*
1
=
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