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RF02 参数 Datasheet PDF下载

RF02图片预览
型号: RF02
PDF下载: 下载PDF文件 查看货源
内容描述: 通用ISM频段FSK发射器 [Universal ISM Band FSK Transmitter]
分类和应用: ISM频段
文件页数/大小: 24 页 / 1085 K
品牌: HOPERF [ HOPERF ]
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RF02  
Oscillator control logic  
3. Frequency Setting Command  
bit 15 14 13 12 11  
10  
9
8
7
6
5
4
3
2
1
0
POR  
1
0
1
0
f11 f10 f9 f8 f7 f6 f5 f4 f3 f2 f1 f0 A7D0h  
The 12-bit parameter of the Frequency Setting Command <f11 : f0> has the value F. The value F should  
be in the range of 96 and 3903. When F is out of range, the previous value is kept. The synthesizer  
center frequency f0 can be calculated as:  
f0 = 10 MHz * C1 * (C2 + F/4000)  
The constants C1 and C2 are determined by the selected band as:  
Band [MHz]  
433  
C1  
1
C2  
43  
43  
30  
868  
2
915  
3
Note:  
• For correct operation of the frequency synthesizer, the frequency and band of operation need to be  
programmed before the synthesizer is started. Directly after activation of the synthesizer, the RF VCO is  
calibrated to ensure proper operation in the programmed frequency band.  
4. Data Rate Command  
bit 15 14 13 12 11  
10  
0
9
0
8
0
7
6
5
4
3
2
1
0
POR  
1
1
0
0
1
r7 r6 r5 r4 r3 r2 r1 r0 C800h  
The transmitted bit rate is determined by the 8-bit value R (bits <r7 : r0>) as:  
BR = 10 MHz / 29 / (R+1)  
Apart from setting custom values, the standard bit rates from 2.4 to 115.2 kbps can be approximated with  
minimal error.  
Note:  
• PLL bandwidth should be set according the data rate. Please see the PLL Setting Command.  
Tel: +86-755-82973805  
Fax: +86-755-82 E-mail: sales@hoperf.com http://www.hoperf.com