参数资料
型号: 71M6541F-DB
厂商: Maxim Integrated Products
文件页数: 93/166页
文件大小: 0K
描述: DEMO BOARD 71M6541F
标准包装: 1
系列: *
71M6541D/F/G and 71M6542F/G Data Sheet
4.3
71M6541D/F/G Using Local Sensors
Figure 35 shows a 71M6541D/F/G configuration using locally connected current sensors. The IAP-IAN
current channel may be directly connected to either a shunt resistor or a CT, while the IBP-IBN channel is
connected to a CT and is therefore isolated. This configuration implements a single-phase measurement
with tamper-detection using one current sensor to measure the neutral current. This configuration can
also be used to create a split phase meter (e.g., ANSI Form 2S). For best performance, both the IAP-IAN
and IBP-IBN current sensor inputs are configured for differential mode (i.e., DIFFA_E = 1 and DIFFB_E =
1, I/O RAM 0x210C[4] and 0x210C[5] ). The IBP-IBN input must be configured as an analog differential
input disabling the remote sensor interface (i.e., RMT_E = 0, I/O RAM 0x2709[3] ). See Figure 2 for the AFE
configuration corresponding to Figure 35 .
NEUTRAL
CT
CT or
LOAD
Note:
LINE
Shunt
NEUTRAL
LINE
MUX and ADC
IAP
IAN
This system is referenced to LINE
POWER SUPPLY
V3P3A V3P3SYS GNDA GNDD
PWR MODE
CONTROL
WAKE-UP
71M6541D/F/G
REGULATOR
BATTERY
VBAT
VA
IBP
IBN
TEMPERATURE
SENSOR
VBAT_RTC
BATTERY
MONITOR
RTC
BATTERY
TX
AMR
IR
HOST
VREF
SERIAL PORTS
TX
RX
MODUL- RX
ATOR
POWER FAULT
COMPARATOR
SPI INTERFACE
RAM
COMPUTE
ENGINE
FLASH
MEMORY
MPU
RTC
TIMERS
COM0...5
SEG
SEG/DIO
LCD DRIVER
DIO, PULSES
DIO
V3P3D
OSCILLATOR/
PLL
XIN
LCD DISPLAY
8888.8888
PULSES,
DIO
I 2 C or μWire
EEPROM
32 kHz
ICE
XOUT
11/5/2010
Figure 35. 71M6541D/F/G with Local Sensors
Rev 4
93
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