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SA9122EFA 参数 Datasheet PDF下载

SA9122EFA图片预览
型号: SA9122EFA
PDF下载: 下载PDF文件 查看货源
内容描述: 单相单向功率/电能计量芯片有独立的64段LCD驱动器 [SINGLE PHASE UNIDIRECTIONAL POWER/ENERGY METERING IC WITH SEPERATE 64 SEGMENT LCD DRIVER]
分类和应用: 驱动器
文件页数/大小: 12 页 / 203 K
品牌: SAMES [ SAMES ]
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SA9122E
The formula for calculating the output frequency is given below:
f = 11.16 * FOUTX *
Where FOUTX
FOSC
I
I
I
V
I
R
FOSC
3.58MHz
*
I
I
.I
V
I
R2
= Normal rated frequency (4Hz or 1160Hz)
= Oscillator frequency (2MHz ...... 4MHz)
= Input current for current sensor input (16µA at rated line current)
= Input current for voltage sensor input (14µA at rated line voltage)
= 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.
sames
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