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71M6103 Datasheet, PDF (1/19 Pages) Maxim Integrated Products – On-Chip Temperature Sensor Enables Localized Digital Temperature On-Chip Power Monitoring
A Maxim Integrated Products Brand
19-5704; Rev 6/11
71M6103/71M6113/
71M6201/71M6203/
71M6601/71M6603
Isolated Sensor ICs
DATA SHEET
GENERAL DESCRIPTION
The 71M6103/71M6113/71M6201/71M6203/71M6601/71M6603
(71M6xxx) isolated sensor ICs enable Teridian’s 4th-generation
polyphase-metering 71M654x systems-on-chips (SoCs) to use
nonisolating sensors such as resistive shunts without the need
for costly and nonlinear isolation transformers or CTs. Isolation is
provided by low-cost pulse transformers that form a bidirectional
digital communication link between the 71M654x and the
isolated sensor ICs.
The 71M6xxx isolated sensor ICs contain a 22-bit delta-sigma
ADC, an amplifier with differential inputs, a precision voltage
reference, a temperature sensor, and a supply voltage generator
that is energized by power pulses provided by the 71M654x.
In conjunction with the 71M654x metering SoCs, the isolated
sensor ICs offer unprecedented BOM cost reduction, immunity to
magnetic tampering, and enhanced reliability for single-phase
and polyphase applications.
June 2011
FEATURES
• 0.1% Accuracy Over 2000:1 Current
Range
• Exceeds IEC 62053/ANSI C12.20
Standards
• Compatible with Shunt Resistors as Low
as 50µΩ
• On-Chip Temperature Sensor Enables
Localized Digital Temperature
Compensation by the 71M654x
• 22-Bit ADC
• Powered from the 71M654x Using Pulses
Sent Through the Transformer
• 3.3mW Typical Consumption
• On-Chip Power Monitoring
• Industrial Temperature Range
• 8-Pin Lead(Pb)-Free SO Package
Shunt Current Sensors
C
NEUTRAL
B
A
LOAD
POWER SUPPLY
NEUTRAL
Note: This system is referenced to Neutral
3x TERIDIAN
71M6xx3
Pulse Transformers
AMR
IR
HOST
MUX and ADC
IADC0
IADC1
}IN*
VADC10 (VC)
IAD
IAD
C6
C7
}IC
VADC9 (VB)
IADC4
IADC5
}IB
VADC8 (VA)
IADC2
IADC3
}IA
V3P3A V3P3SYS GNDA GNDD
TERIDIAN
71M6543F/
71M6543H
PWR MODE
CONTROL
WAKE-UP
REGULATOR
VBAT
VBAT_RTC
TEMPERATURE BATTERY
SENSOR
MONITOR
VREF
SERIAL PORTS
TX
RX
MODUL- RX
ATOR TX
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/
PLL XIN
XOUT
*IN = Neutral Current
9/17/2010
BATTERY
RTC
BATTERY
LCD DISPLAY
8888.8888
PULSES,
DIO
I2C or µWire
EEPROM
32 kHz
v1.2
© 2008–2011 Teridian Semiconductor Corporation
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