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参数资料
| 型号： | 78M6610+PSU/C00T |
| 厂商： | Maxim Integrated |
| 文件页数： | 12/63页 |
| 文件大小： | 0K |
| 描述： | IC ENERGY MEASURMENT 1PH 16TSSOP |
| 标准包装： | 2,500 |
| 输入阻抗： | 30 千欧 ~ 90 千欧 |
| 电压 - 高输入/输出： | 2V |
| 电压 - 低输入/输出： | 0.8V |
| 电流 - 电源： | 8.1mA |
| 电源电压： | 3 V ~ 3.6 V |
| 测量仪表类型： | 单相 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 16-TSSOP |
| 包装： | 带卷 (TR) |
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78M6610+PSU Data Sheet
2.4
Fundamental and Harmonics Calculations
Fundamental and Harmonics
The 78M6610+PSU provides measurements on fundamental and total harmonic of voltage, current, and
power (active, reactive, and apparent).
SINE(t)
Vrms
X
YI
X 2 - YI 2
Vharm
∑
∑
∑
∑
V
COSINE(t)
SINE(t)
i
COSINE(t)
X
X
X
X
N-1
n=0
N-1
n=0
N-1
n=0
N-1
n=0
VSINE
VCOS
ISINE
ICOS
N
N
N
N
X
Y
X
Y
X 2 + Y 2
X 2 + Y 2
Irms
X
YI
X 2 - YI 2
Vfund
Iharm
Ifund
Figure 8: Voltage and Current Fundamental and Harmonic Calculations
Fundamental and Harmonic Selection
The 78M6610+PSU allows extraction and calculation of a single selected harmonic. By default, the
fundamental (first harmonic) is selected for voltage, current, active, reactive real and apparent power
calculations. The HARM register is used to select the single harmonic to extract.
By setting the value in the HARM register to a higher harmonic, the fundamental result registers will
contain amplitudes of the selected harmonic. In this case the harmonic result register will contain the
balance of the voltage, current, or power.
2.5
Accumulation Interval
The accumulation interval mode is configurable by the user through the Accum and AccumCyc registers
and the status of the line lock bit.
The ACCUM register contains an unsigned integer values representing the accumulation interval (time)
expressed in number of high-rate samples.
The accumulation interval can also be locked to the incoming line voltage cycles. The LINELOCK bit
in the command register allows the accumulation interval to be determined by the ACCUM register or
to be locked to the line cycle.
Once locked to the line cycle the accumulation interval will end after the first low-to-high zero
crossing of the Reference AC Voltage (see Zero-Crossing Detection) input occurs once the Minimum
Accumulation time has elapsed. The Actual Accumulation Interval will span an integer number of line
cycles. When LINELOCK is not set, the Accumulation Interval will equal the value set by the ACCUM
register.
The effective sample rate for each input of the 78M6610+PSU is 4KS/s. The DIVISOR register
reports the actual number of samples within any given accumulation interval.
12
Rev 1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 78M6611-EVM | 制造商:Maxim Integrated Products 功能描述:78M6611 EVAL BOARD - Boxed Product (Development Kits) |
| 78M6611-IVT/F | 功能描述:IC POWER MEASUREMENT AC 24-TSSOP 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:* |
| 78M6611-IVT/F/P | 制造商:Maxim Integrated Products 功能描述:PROGRAMMED - LEAD FREE - Rail/Tube |
| 78M6611-IVTR/F | 功能描述:IC POWER MEASUREMENT AC 24-TSSOP 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:* |
| 78M6611-IVTR/F/P | 制造商:Maxim Integrated Products 功能描述:PROGRAMMED - LEAD FREE/TAPE & REEL - Tape and Reel |
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