參數(shù)資料
型號(hào)： 71M6541F-IGT/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, PQFP64
封裝： LEAD FREE, LQFP-64
文件頁數(shù)： 158/165頁
文件大?。?/td> 2208K
代理商： 71M6541F-IGT/F
92
2008–2011 Teridian Semiconductor Corporation
v1.1
4
Application Information
4.1
Connecting 5 V Devices
All digital input pins of the 71M654x are compatible with external 5 V devices. I/O pins configured as
inputs do not require current-limiting resistors when they are connected to external 5 V devices.
4.2
Direct Connection of Sensors
Figure 31 through Figure 34 show voltage-sensing resistive dividers, current-sensing current transformers
(CTs) and current-sensing resistive shunts and how they are connected to the voltage and current inputs
of the 71M654x. All input signals to the 71M654x sensor inputs are voltage signals providing a scaled
representation of either a sensed voltage or current.
The analog input pins of the 71M654x are designed for sensors with low source impedance.
RC filters with resistance values higher than those implemented in the Teridian Demo Boards
must not be used. Please refer to the Demo Board schematics for complete sensor input
circuits and corresponding component values.
RIN
VIN
ROUT
V3P3A
VA
Figure 31: Resistive Voltage Divider (Voltage Sensing)
IIN
IAP
V3P3A
VOUT
IOUT
RBURDEN
CT
1:N
Noise Filter
Figure 32. CT with Single-Ended Input Connection (Current Sensing)
IIN
IAP
IAN
V3P3A
VOUT
IOUT
RBURDEN
CT
1:N
Bias Network and Noise Filter
Figure 33: CT with Differential Input Connection (Current Sensing)
IIN
RSHUNT
IAP
IAN
V3P3A
VOUT
Bias Network and Noise Filter
Figure 34: Differential Resistive Shunt Connections (Current Sensing)
相關(guān)PDF資料
PDF描述
71M6543F-IGT/F SPECIALTY ANALOG CIRCUIT, PQFP100
71M6543H-IGTR/F SPECIALTY ANALOG CIRCUIT, PQFP100
71M6543F-IGTR/F SPECIALTY ANALOG CIRCUIT, PQFP100
71M6543H-IGT/F SPECIALTY ANALOG CIRCUIT, PQFP100
71M6543G-IGTR/F SPECIALTY ANALOG CIRCUIT, PQFP100
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