参数资料
型号: 71M6113-IL/F
厂商: Maxim Integrated
文件页数: 9/19页
文件大小: 0K
描述: IC ENERGY METER 3PHASE 8SOIC
标准包装: 280
系列: *
71M6xxx Data Sheet
C
NEUTRAL
Shunt Current Sensors
LOAD
B
A
POWER SUPPLY
NEUTRAL
Note: This system is referenced to Neutral
3x 71M6xx3
IADC1 } IN*
IADC7 } IC
IADC5 } IB
IADC3 } IA
TEMPERATURE
SENSOR
Pulse Transformers
MUX and ADC
IADC0
VADC10 (VC)
IADC6
VADC9 (VB)
IADC4
VADC8 (VA)
IADC2
V3P3A V3P3SYS GNDA GNDD
PWR MODE
CONTROL
71M6543F/ WAKE-UP
71M6543H REGULATOR
VBAT
VBAT_RTC
BATTERY
MONITOR
BATTERY
RTC
BATTERY
TX
PLL
AMR
IR
HOST
VREF
SERIAL PORTS
TX
RX
MODUL- RX
ATOR
POWER FAULT
COMPARATOR
SPI INTERFACE
RAM
COMPUTE
ENGINE
FLASH
MEMORY
MPU
RTC
TIMERS
ICE
COM0...5
SEG
SEG/DIO
LCD DRIVER
DIO, PULSES
DIO
V3P3D
OSCILLATOR/
XIN
XOUT
LCD DISPLAY
8888.8888
PULSES,
DIO
I 2 C or μWire
EEPROM
32 kHz
*IN = Neutral Current
9/17/2010
Figure 4: Current Sensors Connected to the 71M6543F/H or 71M6545/H with Three 71M6xx3
3.4
PCB Layout Considerations
To limit emissions and susceptibility to electromagnetic and magnetic fields, the signal wiring between the
shunt resistors and the 71M6xxx should be as short as possible and should consist of tightly twisted pair
cable. Similarly, the PCB traces between the 71M6xxx and the 71M654x should be routed as short as
possible and should be surrounded by grounded copper structures. The trace pairs should be routed as
close to each other as permitted by the PCB manufacturer.
The copper separation (gap) between the shunt side and the 71M654x side of the signal transformer
should be as wide as permitted by the footprint of the transformer, as shown in Figure 5.
9
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