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MICRF022YM-FS48 参数 Datasheet PDF下载

MICRF022YM-FS48图片预览
型号: MICRF022YM-FS48
PDF下载: 下载PDF文件 查看货源
内容描述: 300-440MHz QwikRadio系列? ASK接收器 [300-440MHz QwikRadio? ASK Receiver]
分类和应用: 商用集成电路光电二极管
文件页数/大小: 17 页 / 373 K
品牌: MICREL [ MICREL SEMICONDUCTOR ]
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Micrel, Inc.  
MICRF002/RF022  
for the vast majority of applications. If adjustment is  
required the constant may be varied by adding a resistor in  
parallel with the CAGC capacitor. The value of the resistor  
must be determined on a case by case basis.  
0.65  
(8)  
Demoulator bandwidth =  
Shortest pulse width  
It should be noted that the values indicated in Table 1 are  
nominal values. The filter bandwidth scales linearly with  
frequency so the exact value will depend on the operating  
frequency. Refer to the “Electrical Characteristics” for the  
exact filter bandwidth at a chosen frequency.  
Step 5: Selecting The Demod Filter Bandwidth  
The inputs SEL0 and SEL1 control the demodulator filter  
bandwidth in four binary steps (625Hz to 5000Hz in sweep,  
1250Hz to 10000Hz in fixed-mode), see Table 3.  
Bandwidth must be selected according to the application.  
The demodulator bandwidth should be set according to  
Equation 8:  
Demodulator Bandwidth  
SEL0  
SEL1  
Sweep-Mode  
5000Hz  
Fixed-Mode  
10000Hz  
5000Hz  
1
0
1
0
1
1
0
0
2500Hz  
1250Hz  
2500Hz  
625Hz  
1250Hz  
Table 1. Nominal Demodulator Filter Bandwidth vs.  
SEL0, SEL1 and Operating Mode  
M9999-070808  
July 2008  
10