收藏本站
ADE7880
Voltage Channel RMS Calculation
Figure 69 shows the detail of the signal processing chain for the
rms calculation on one of the phases of the voltage channel. The
voltage channel rms value is processed from the samples used in
the voltage channel. The voltage rms values are signed 24-bit
values and they are stored into the Registers AVRMS, BVRMS,
and CVRMS. The update rate of the current rms measurement
is 8 kHz.
With the specified full-scale analog input signal of 0.5 V, the
ADC produces an output code that is approximately ±5,326,737.
The equivalent rms value of a full-scale sinusoidal signal is
3,766,572 (0x39792C), independent of the line frequency.
The accuracy of the voltage rms is typically 0.1% error from the
full-scale input down to 1/1000 of the full-scale input. Additionally,
2 7
Data Sheet
this measurement has a bandwidth of 3.3 kHz. It is
recommended to read the rms registers synchronous to the
voltage zero crossings to ensure stability. The IRQ1 interrupt
can be used to indicate when a zero crossing has occurred (see
the Interrupts section).
The V rms measurement settling time is 580 ms for both 50 Hz
and 60 Hz input signals. The V rms measurement settling time
is the time it takes for the rms register to reflect the value at the
input to the voltage channel when starting from 0.
As stated in the Current Waveform Gain Registers section, the
serial ports of the ADE7880 work on 32-, 16-, or 8-bit words.
Similar to the register presented in Figure 57, the AVRMS,
BVRMS, and CVRMS 24-bit signed registers are accessed as
32-bit registers with the eight MSBs padded with 0s.
xVRMSOS[23:0]
VOLTAGE SIGNAL
FROM HPF
x 2
LPF
xVRMS[23:0]
0x14791 =
+5,326,737
0V
0xAEB86F =
–5,326,737
Figure 69. Voltage RMS Signal Processing
Rev. A | Page 42 of 104
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
EVAL-ADE7953EBZ BOARD EVAL FOR ADE7953
EVAL-ADF4002EBZ1 BOARD EVAL FOR ADF4002
EVAL-ADG788EBZ BOARD EVALUATION FOR ADG788
EVAL-ADM1021AEB BOARD EVAL FOR ADM1021
EVAL-ADM1023EB BOARD EVAL FOR ADM1023
EVAL-ADM1031EB BOARD EVAL FOR ADM1031
EVAL-ADM1062TQEBZ BOARD EVALUATION FOR ADM1062TQ
EVAL-ADM1075CEBZ BOARD EVAL FOR ADM1075
相关代理商/技术参数
EVAL-ADE7880EBZ 制造商:Analog Devices 功能描述:ADE7880, ENERGY METER, 3 PH, SPI, I2C, E
EVAL-ADE7913EBZ 制造商:AD 制造商全称:Analog Devices 功能描述:3-Channel, Isolated, Sigma-Delta ADC with SPI
EVAL-ADE7953EBZ 功能描述:BOARD EVAL FOR ADE7953 RoHS:是 类别:编程器，开发系统 >> 评估演示板和套件 系列:- 标准包装:1 系列:PSoC® 主要目的:电源管理，热管理 嵌入式:- 已用 IC / 零件:- 主要属性:- 次要属性:- 已供物品:板，CD，电源
EVAL-ADF4001EBZ2 制造商:Analog Devices 功能描述:Evaluation Board For Pll Frequency Synthesizer 制造商:Analog Devices 功能描述:ADF4001 PLL SYNTHESIZER EVAL BOARD
EVAL-ADF4002EB1 制造商:Analog Devices 功能描述:EVAL BOARD - Bulk
EVAL-ADF4002EBZ1 功能描述:BOARD EVAL FOR ADF4002 RoHS:是 类别:编程器，开发系统 >> 评估演示板和套件 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:- 主要目的:电源管理，电池充电器 嵌入式:否 已用 IC / 零件:MAX8903A 主要属性:1 芯锂离子电池 次要属性:状态 LED 已供物品:板
EVAL-ADF4007EBZ1 功能描述:BOARD EVALUATION FOR ADF4007EB1 RoHS:是 类别:编程器，开发系统 >> 评估演示板和套件 系列:- 标准包装:1 系列:PSoC® 主要目的:电源管理，热管理 嵌入式:- 已用 IC / 零件:- 主要属性:- 次要属性:- 已供物品:板，CD，电源
EVAL-ADF4106EB1 制造商:Analog Devices 功能描述:PLL, Frequency Synthesizer