參數(shù)資料
型號(hào): 71M6521DE-IMR/F
廠商: MAXIM INTEGRATED PRODUCTS INC
元件分類: 模擬信號(hào)調(diào)理
英文描述: SPECIALTY ANALOG CIRCUIT, QCC68
封裝: LEAD FREE, LQFN-68
文件頁數(shù): 61/103頁
文件大?。?/td> 1691K
代理商: 71M6521DE-IMR/F
71M6521DE/71M6521FE
Energy Meter IC
DATA SHEET
OCTOBER 2010
Page: 60 of 103
2005-2010 Teridian Semiconductor Corporation
v1.1
A Maxim Integrated Products Brand
19-5370; 10/10
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/FE.
VA = Vin * R
out/(Rout + Rin)
V
in
R
in
R
out
VA
Figure 28: Resistive Voltage Divider (Left), Current Transformer (Right)
Figure 29: Resistive Shunt
Temperature Measurement
Measurement of absolute temperature uses the on-chip temperature sensor while applying the following formula:
n
T
S
N
T
N
T
+
=
)
(
In the above formula T is the temperature in °C, N(T) is the ADC count at temperature T, Nn is the ADC count at 25°C, Sn is
the sensitivity in LSB/°C as stated in the Electrical Specifications, and Tn is +25°C.
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相關(guān)代理商/技術(shù)參數(shù)
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