参数资料
| 型号： | 71M6521FE-DB |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 61/107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： | 否 |
| 已用 IC / 零件： | 71M6521 |
| 已供物品： | 2 个板，线缆，CD，电源 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页当前第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页第89页第90页第91页第92页第93页第94页第95页第96页第97页第98页第99页第100页第101页第102页第103页第104页第105页第106页第107页
71M6521DE/DH/FE Data Sheet
Temperature Measurement
Measurement of absolute temperature uses the on-chip temperature sensor while applying the following formula:
T =
( N ( T ) ? N n )
S n
+ T n
In the above formula T is the temperature in °C, N(T) is the ADC count at temperature T, N n is the ADC count at
25°C, S n is the sensitivity in LSB/°C as stated in the Electrical Specifications, and T n is +25°C.
Example: At 25°C a temperature sensor value of 518,203,584 (N n ) is read by the ADC by a 71M6521FE in the 64-pin
LQFP package. At an unknown temperature T the value 449.648.000 is read at (N(T)). The absolute temperature is
then determined by dividing both N n and N(T) by 512 to account for the 9-bit shift of the ADC value and then inserting
the results into the above formula, using –2220 for LSB/°C:
T =
449.648.00 0 - 518,203,58 4
512 ? ( ? 2220 )
+ 25 C = 85 . 3 ° C
component behavior (in μV/°C and μV/°C , respectively).
to be taken into account when transitioning to PPM/°C and PPM/°C . This means that PPMC =
It is recommended to base temperature measurements on TEMP_RAW_X which is the sum of two consecutive
temperature readings thus being higher by a factor of two than the raw sensor readings.
Temperature Compensation
Temperature Coefficients: The internal voltage reference is calibrated during device manufacture.
For the 71M6521DE/FE, the temperature coefficients TC1 and TC2 are given as constants that represent typical
2
For the 71M6521DH, the temperature characteristics of the chip are measured during production and then stored in
the fuse registers TRIMBGA, TRIMBGB , TRIMT and TRIMM[2:0] . TC1 and TC2 can be derived from the fuses by using
the relations given in the Electrical Specifications section.
Since TC1 and TC2 are given in μV/°C and μV/°C 2 , respectively, the value of the VREF voltage (1.195 V) has
2
26.84*TC1/1.195, and PPMC2 = 1374*TC2/1.195.
Close examination of the electrical specification (see Table 61) for the parts with regular accuracy reveals that the
achievable deviation is not strictly ±40 PPM/°C over the whole temperature range: Only for temperatures for which T-
22 > 40 (i.e. T > 62°C) or for which T-22 < -40 (i.e. T < -18°C), the data sheet states ±40 PPM/°C. For temperatures
between -18°C and +62°C, the error should be considered constant at ±1,600 PPM, or ±0.16%.
Similar considerations apply to the high-accuracy parts (see Table 62), where the error around the calibration
temperature should be considered constant at ±800 PPM, or ±0.08%.
Parameter
Condition
Min
Typ
VREF(T) deviation from VNOM(T)
VREF ( T ) ? VNOM ( T )
VNOM ( T )
10 6
max( T ? 22 , 40 )
-40
+40
PPM/oC
Table 61: VREF Definition for the Regular Accuracy Parts
Rev 3
Page: 61 of 107
相关PDF资料 |
PDF描述 |
|---|---|
| 71M6531F-DB | BOARD DEMO 71M6531F |
| 71M6533-DB | BOARD DEMO 71M6533 |
| 71M6534H-DB | BOARD DEMO 71M6534H |
| 71M6541F-DB | DEMO BOARD 71M6541F |
| 71M6543F-DB-CT | DEMO BOARD 71M6543F-DB-CT |
相关代理商/技术参数 |
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 |
发布紧急采购，3分钟左右您将得到回复。