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| 型号： | 71M6515H-IGTR/F |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PQFP64 |
| 封装： | LEAD FREE, LQFP-64 |
| 文件页数： | 17/60页 |
| 文件大小： | 826K |
| 代理商： | 71M6515H-IGTR/F |
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71M6515H
Energy Meter IC
DATA SHEET
JULY 2011
Page: 24 of 60
2005
2011 Teridian Semiconductor Corporation
1.6
A Maxim Integrated Products Brand
Name
Description
CAL_IA
Gain factors for current and voltage of each phase.
CAL_VA
CAL_IB
CAL_VB
CAL_IC
CAL_VC
TEMP_NOM
The value of TEMP_RAW at nominal temperature.
PHADJ_A
Phase compensation for each current. If phase compensation is 0 or if
current sensors have predictable phase, PHADJ may not need to be
measured on every meter.
PHADJ_B
PHADJ_C
Table 4: Typical Calibration Parameters (CT)
Gain adjustment (CAL_Xn parameters) is used to compensate for tolerances of components used for signal conditioning,
especially the resistive components. A 1% increase in CAL_Xn will cause a 1% increase in the channel gain.
The phase compensation circuit in the TERIDIAN 71M6515H is optimized for operation with current transformers (CT’s).
These devices have a low frequency pole and therefore have a slight amount of phase lead at 50 or 60Hz—more at 50Hz than
at 60Hz. The phase lead diminishes at higher harmonics. When PHADJ_n is calibrated as shown below at either 50Hz or
60Hz, the CT will be correctly compensated from below 25Hz to beyond 1100Hz.
This phase compensator is markedly superior to the more common technique of programming a time delay to compensate for
CT phase. The time delay technique results in phase compensation that is correct at only one frequency, and actually
amplifies the phase error at harmonics of the frequency.
Calibration Factors for Rogowski Coil Sensors
If IMAGE is set to 01, i.e. the 71M6515H can be operated with Rogowski Coil sensors. In this case, one more calibration factor
per phase is needed. The PHADJ parameters have non-zero defaults and do not obey the same formula used for CT
calibration. The feedthrough parameter has to be determined by a separate crosstalk measurement. Table 5 shows the
parameters involved in the calibration procedure for the Rogowski sensor.
Name
Description
CAL_IA
Gain constants for current and voltage of each phase.
CAL_VA
CAL_IB
CAL_VB
CAL_IC
CAL_VC
TEMP_NOM
The value of TEMP_RAW at nominal temperature.
PHADJ_A
Phase compensation for each current. If phase compensation is 0 or if
current sensors have predictable phase, PHADJ may not need to be
measured on every meter.
PHADJ_B
PHADJ_C
VFEED_A
Feedthrough compensation for each current.
VFEED_B
VFEED_C
Table 5: Typical Calibration Parameters (Rogowski)
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 71M6515H-IGTW/F | 功能描述:计量片上系统 - SoC Energy Meter IC RoHS:否 制造商:Maxim Integrated 核心:80515 MPU 处理器系列:71M6511 类型:Metering SoC 最大时钟频率:70 Hz 程序存储器大小:64 KB 数据 RAM 大小:7 KB 接口类型:UART 可编程输入/输出端数量:12 片上 ADC: 安装风格:SMD/SMT 封装 / 箱体:LQFP-64 封装:Reel |
| 71M6515H-IGTW1 | 制造商:TERIDIAN 制造商全称:TERIDIAN 功能描述:Up to 10ppmC precision ultra-stable voltage reference Digital temperature compensation |
| 71M6515H-IGTWR1 | 制造商:TERIDIAN 制造商全称:TERIDIAN 功能描述:Up to 10ppmC precision ultra-stable voltage reference Digital temperature compensation |
| 71M6521BE | 制造商:TERIDIAN 制造商全称:TERIDIAN 功能描述:Energy Meter IC |
| 71M6521BE-DB | 制造商:Maxim Integrated Products 功能描述:Development Boards & Kits - 8051 71M6521BE Demo Brd |
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