参数资料
型号: 71M6521FE-IMR/F
厂商: Maxim Integrated
文件页数: 60/107页
文件大小: 0K
描述: IC ENERGY METER 32K FLASH 68-QFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
系列: Single Converter Technology®
测量误差: 0.4%
电源电压: 3 V ~ 3.6 V
测量仪表类型: 单相,双相
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 64-VFQFN 裸露焊盘
供应商设备封装: 64-QFN(7.5x7.5)
包装: 带卷 (TR)

71M6521DE/DH/FE Data Sheet
APPLICATION INFORMATION
Connection of Sensors (CT, Resistive Shunt)
Figure 28 and Figure 29 show how resistive dividers, current transformers, and restive shunts are connected to the
voltage and current inputs of the 71M6521DE/DH/FE.
VA = Vin * R out /(R out + R in )
VA
V in
R in
R out
Figure 28: Resistive Voltage Divider (Left), Current Transformer (Right)
Figure 29: Resistive Shunt
Distinction between 71M6521DE/71M6521FE and 71M6521DH Parts
The 71M6521DH (high-accuracy) part go through an additional process of characterization during production which
makes them suitable to high-accuracy performance over temperature.
The first process, applied to all parts is the trimming of the reference voltage to the target value of 1.195 V.
The second process, which is applied only to the high-accuracy parts, is the characterization of the reference voltage
over temperature. The coefficients for the reference voltage are stored in trim fuses (I/O RAM registers TRIMBGA ,
TRIMBGB , TRIMM[2:0] . The MPU can read these trim fuses and calculate the correction coefficients PPM1 and
PPMC2 per the formulae given in VREF, VBIAS section. See Temperature Compensation section for additional
details.
The fuse TRIMBGB is non-zero for the high-accuracy parts and zero for the regular parts.
Page: 60 of 107
Rev 3
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