ADE7953
Rev. 0 | Page 2 of 68
目录
特性.....................................................................................................1
概述.....................................................................................................1
功能框图............................................................................................1
修订历史............................................................................................3
技术规格............................................................................................4
时序特性 .......................................................................................6
绝对最大额定值...............................................................................8
ESD警告 ........................................................................................8
引脚配置和功能描述 ......................................................................9
典型工作特性 .................................................................................11
测试电路..........................................................................................16
术语...................................................................................................17
工作原理..........................................................................................18
模拟输入 .....................................................................................18
模数转换 .....................................................................................18
电流通道ADC ............................................................................20
电压通道ADC ............................................................................21
基准电压电路.............................................................................21
有效值测量......................................................................................22
电流通道有效值计算 ...............................................................22
电压通道有效值计算 ...............................................................22
有功功率计算 .................................................................................23
有功功率计算的符号 ...............................................................23
有功电能计算.............................................................................24
有功电能累计模式....................................................................26
无功功率计算 .................................................................................27
无功功率计算的符号 ...............................................................27
无功电能计算.............................................................................28
无功电能累计模式....................................................................29
视在功率计算 .................................................................................30
视在电能计算.............................................................................30
安培小时累计.............................................................................31
电能频率转换 .................................................................................32
脉冲输出特性.............................................................................32
电能校准..........................................................................................33
增益校准 .....................................................................................33
相位校准 .....................................................................................33
失调校准 .....................................................................................34
周期测量..........................................................................................35
瞬时功率和波形采样 ....................................................................36
功率因数..........................................................................................37
利用线周期累计模式确定功率因数 .....................................37
空载检测下的功率因数 ...........................................................37
角度测量 .....................................................................................38
空载检测..........................................................................................39
设置空载阈值.............................................................................39
有功电能空载检测....................................................................39
无功电能空载检测....................................................................40
视在电能空载检测....................................................................40
过零检测..........................................................................................42
过零输出引脚.............................................................................42
过零中断 .....................................................................................42
过零超时 .....................................................................................43
过零阈值 .....................................................................................43
电压骤降检测 .................................................................................44
设置SAGCYC寄存器 ................................................................44
设置SAGLVL寄存器.................................................................44
电压骤降中断.............................................................................44
峰值检测..........................................................................................45
功率方向指示 ................................................................................ 46
反向功率 .....................................................................................46
符号指示 .....................................................................................46
过流和过压检测.............................................................................47
设置OVLVL和OILVL寄存器..................................................47
过压和过流中断 ........................................................................47
替代输出功能 .................................................................................48
ADE7953中断..................................................................................49
主中断(电压通道和电流通道A) ............................................49
电流通道B中断 ..........................................................................49
与ADE7953通信 .............................................................................50
通信自动检测.............................................................................50
锁定通信接口.............................................................................50
SPI接口 ........................................................................................51
I
2
C接口.........................................................................................52
UART接口 ..................................................................................54
