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SA9105AFA 参数 Datasheet PDF下载

SA9105AFA图片预览
型号: SA9105AFA
PDF下载: 下载PDF文件 查看货源
内容描述: 三相双向功率/电能计量IC,带有脉冲输出 [THREE PHASE UNIDIRECTIONAL POWER/ENERGY METERING IC WITH PULSE OUTPUT]
分类和应用: 脉冲输出元件
文件页数/大小: 12 页 / 124 K
品牌: SAMES [ SAMES ]
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SA9105A  
The formula for calculating the Output Frequency (f) is given below:  
FOSC  
3.58MHz  
(II1 IV1) + (II2 IV2) + (I IV3)  
I3  
f = 11.16  
FOUTX  
*
*
*
2
3 I  
R
*
Where FOUTX = Nominal rated frequency (4Hz, 290Hz or 1160Hz)  
FOSC = Oscillator frequency (2MHz ...... 4MHz)  
II1, II2, II3 = Input currents for current inputs (16µA at rated)  
IV1, IV2, IV3 = Input currents for voltage inputs (14µA at rated)  
IR  
= Reference current (typically 50µA)  
XTAL is a colour burst TV crystal (f = 3.5795 MHz) for the oscillator. The oscillator  
frequency is divided down to 1.7897 MHz on-chip, to supply the digital circuitry and the  
A/D converters.  
8/12  
sames