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| 型号： | ADE7878ACPZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 22/100页 |
| 文件大小： | 0K |
| 描述： | IC ENERGY METERING 3PH 40LFCSP |
| 标准包装： | 1 |
| 输入阻抗： | 400 千欧 |
| 测量误差： | 0.2% |
| 电压 - 高输入/输出： | 2.4V |
| 电压 - 低输入/输出： | 0.4V |
| 电源电压： | 2.4 V ~ 3.7 V |
| 测量仪表类型： | 3 相 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 40-WFQFN 裸露焊盘，CSP |
| 供应商设备封装： | 40-LFCSP-WQ（6x6） |
| 包装： | 托盘 |
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ADE7854/ADE7858/ADE7868/ADE7878
TERMINOLOGY
Measurement Error
The error associated with the energy measurement made by the
Data Sheet
Gain Error
Measurement Error =
Energy Registered by ADE 78 xx ? True Energy
True Energy
× 100 %
(1)
measured ADC output code (minus the offset) and the ideal
output code (see the Current Channel ADC section and the
percentage of the ideal code.
Period 0 + Period 1 + Period 2 + Period 3
CF JITTER =
× 100 %
Maximum ? Minimum
Power Supply Rejection (PSR)
This quantifies the ADE7854/ADE7858/ADE7868/ADE7878
measurement error as a percentage of reading when the power
supplies are varied. For the ac PSR measurement, a reading at
nominal supplies (3.3 V) is taken. A second reading is obtained
with the same input signal levels when an ac signal (120 mV rms
at twice the fundamental frequency) is introduced onto the
supplies. Any error introduced by this ac signal is expressed as a
percentage of reading—see the Measurement Error definition.
For the dc PSR measurement, a reading at nominal supplies
(3.3 V) is taken. A second reading is obtained with the same
input signal levels when the power supplies are varied ±10%.
Any error introduced is expressed as a percentage of the
reading.
ADC Offset Error
This refers to the dc offset associated with the analog inputs to
the ADCs. It means that with the analog inputs connected to
AGND, the ADCs still see a dc analog input signal. The magni-
tude of the offset depends on the gain and input range selection
However, the HPF removes the offset from the current and voltage
channels and the power calculation remains unaffected by this
offset.
CF Jitter
The period of pulses at one of the CF1, CF2, or CF3 pins is
continuously measured. The maximum, minimum, and average
values of four consecutive pulses are computed as follows:
Maximum = max ( Period 0 , Period 1 , Period 2 , Period 3 )
Minimum = min ( Period 0 , Period 1 , Period 2 , Period 3 )
Average =
4
The CF jitter is then computed as
(2)
Average
Signal-to-Noise Ratio (SNR)
SNR is the ratio of the rms value of the actual input signal to
the rms sum of all other spectral components below 2 kHz,
excluding harmonics and dc. The input signal contains only
the fundamental component. The spectral components are
calculated over a 2 sec window. The value for SNR is expressed
in decibels.
Signal-to-(Noise and Distortion) Ratio (SINAD)
SINAD is the ratio of the rms value of the actual input signal
to the rms sum of all other spectral components below 2 kHz,
including harmonics but excluding dc. The input signal
contains only the fundamental component. The spectral
components are calculated over a 2 sec window. The value
for SINAD is expressed in decibels.
Rev. H | Page 22 of 100
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADE7878ACPZ | 制造商:Analog Devices 功能描述:IC MULTIFUNCTION ENERGY METERING LFCSP40 |
| ADE7878ACPZ-RL | 功能描述:IC ENERGY METERING 3PH 40LFCSP RoHS:是 类别:集成电路 (IC) >> PMIC - 能量测量 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:* |
| ADE7878XCPZ | 制造商:Analog Devices 功能描述:POLY PHASE MULTIFUNCTION ENERGY METERING IC WITH TOTAL - Bulk |
| ADE7880 | 制造商:Analog Devices 功能描述:BOARD EVAL ENERGY METER ADE |
| ADE7880ACPZ | 功能描述:IC ENERGY METERING 3PH 40LFCSP RoHS:是 类别:集成电路 (IC) >> PMIC - 能量测量 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:* |
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