参数资料
型号: 71M6521FE-DB
厂商: Maxim Integrated Products
文件页数: 63/107页
文件大小: 0K
描述: BOARD DEMO FOR 71M6521FE
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 1
主要目的: 电源管理,电度表/功率表
嵌入式:
已用 IC / 零件: 71M6521
已供物品: 2 个板,线缆,CD,电源
71M6521DE/DH/FE Data Sheet
Error Band (PPM) over Temperature (°C)
1400
1000
600
200
-200
-600
-1000
-1400
±20 PPM/°C
±20 PPM/°C
-40
-20
0
20
40
60
80
Figure 31: Error Band for VREF over Temperature (High-Accuracy Parts)
Temperature Compensation : The CE provides the bandgap temperature to the MPU, which then may digitally com-
pensate the power outputs for the temperature dependence of VREF, using the CE register GAIN_ADJ . Since the
band gap amplifier is chopper-stabilized via the CHOP_EN bits, the most significant long-term drift mechanism in the
voltage reference is removed.
The MPU, not the CE, is entirely in charge of providing temperature compensation. The MPU applies the following
formula to determine GAIN_ADJ (address 0x12) . In this formula TEMP_X is the deviation from nominal or calibration
temperature expressed in multiples of 0.1°C:
GAIN _ ADJ = 16385 +
TEMP _ X ? PPMC
2 14
+
TEMP _ X 2 ? PPMC 2
2 23
In a production electricity meter, the 71M6521DE/DH/FE is not the only component contributing to temperature de-
pendency. A whole range of components (e.g. current transformers, resistor dividers, power sources, filter capacitors)
will contribute temperature effects.
Since the output of the on-chip temperature sensor is accessible to the MPU, temperature-compensation
mechanisms with great flexibility are possible. MPU access to GAIN_ADJ permits a system-wide temperature
correction over the entire meter rather than local to the chip.
Rev 3
Page: 63 of 107
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参数描述
71M6521FE-IGT 制造商:Maxim Integrated Products 功能描述:Metering Systems on a Chip - SoC Residential Energy Meter IC
71M6521FE-IGT/F 功能描述:计量片上系统 - SoC Residential 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
71M6521FE-IGT/F1 功能描述:计量片上系统 - SoC 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
71M6521FE-IGTR 制造商:Maxim Integrated Products 功能描述:Metering Systems on a Chip - SoC Residential Energy Meter IC
71M6521FE-IGTR/F 功能描述:计量片上系统 - SoC Residential 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