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RFM42 参数 Datasheet PDF下载

RFM42图片预览
型号: RFM42
PDF下载: 下载PDF文件 查看货源
内容描述: ISM发射模块 [ISM TRANSMITTER Module]
分类和应用: ISM频段
文件页数/大小: 110 页 / 2973 K
品牌: HOPERF [ HOPERF ]
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RFM42/43  
Register 52h. TX Ramp Control  
Bit  
D7  
Reserved  
R/w  
D6  
D5  
txmod[2:0]  
R/w  
D4  
D3  
D2  
D1  
txramp[1:0]  
R/w  
D0  
ldoramp[1:0]  
Name  
Type  
R/w  
Reset value = 00101111  
Bit  
Name  
Function  
7
Reserved  
Reserved.  
TX Modulation Delay.  
The time delay between PA enable and the beginning of the TX modulation to  
allow for PA ramp-up. It can be set from 0 μs to 28 μs in 4 μs steps. This also  
works during PA ramp down.  
6:4  
3:2  
txmod[2:0]  
ldoramp[1:0]  
TX LDO Ramp Time.  
The RF LDO is used to help ramp the PA to prevent VCO pulling and spectral  
splatter.  
00:  
5 μs  
01: 10 μs  
10: 15 μs  
11: 20 μs  
TX Ramp Time.  
The PA is ramped up slowly to prevent VCO pulling and spectral splatter. This  
register sets the time the PA is ramped up.  
txramp[1:0]  
1:0  
00:  
5 μs  
01: 10 μs  
10: 15 μs  
11: 20 μs  
80  
Tel: +86-755-82973805  
Fax: +86-755-82973550  
E-mail: sales@hoperf.com  
http://www.hoperf.com  
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