参数资料
型号: 71M6521FE-IMR/F
厂商: Maxim Integrated
文件页数: 62/107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
Parameter
Condition
Min
Typ
VREF(T) deviation from VNOM(T)
VREF ( T ) ? VNOM ( T )
VNOM ( T )
10 6
max( T ? 22 , 40 )
-20
+20
PPM/oC
Table 62: VREF Definition for the High-Accuracy Parts
Figure 30 and Figure 31 show this concept graphically. The “box” from -18°C to +62°C reflects the fact that it is
impractical to measure the temperature coefficient of high-quality references at small temperature excursions. For
example, at +25°C, the expected error would be ±3°C * 40 PPM/°C, or just 0.012% for the regular-accuracy parts..
The maximum deviation of ±2520 PPM (or 0.252%) for the regular-accuracy parts is reached at the temperature
extremes. If the reference voltage is used to measure both voltage and current, the identical errors of ±0.252% add
up to a maximum Wh registration error of ±0.504%.
The maximum deviation of ±1260 PPM (or 0.126%) for the high-accuracy parts is reached at the temperature
extremes. If the reference voltage is used to measure both voltage and current, the identical errors of ±0.126% add
up to a maximum Wh registration error of ±0.252%.
Error Band (PPM) over Temperature (°C)
2800
2400
2000
1600
1200
800
400
0
-400
-800
-1200
-1600
-2000
-2400
-2800
±40 PPM/°C
±40 PPM/°C
-40
-20
0
20
40
60
80
Figure 30: Error Band for VREF over Temperature (Regular-Accuracy Parts)
Page: 62 of 107
Rev 3
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