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PDF 71M6103 Data sheet ( Hoja de datos )

Número de pieza 71M6103
Descripción Isolated Sensor ICs
Fabricantes Maxim Integrated 
Logotipo Maxim Integrated Logotipo



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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 Maxim Integrated’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.
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 71M6xx3
Pulse Transformers
AMR
IR
HOST
MUX and ADC
IADC0
IADC1
}IN*
VADC10 (VC)
I
I
ADC
ADC
6
7
}IC
VADC9 (VB)
IADC4
IADC5
}IB
VADC8 (VA)
IADC2
IADC3
}IA
V3P3A V3P3SYS GNDA GNDD
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
For pricing, delivery, and ordering information, please contact Maxim Direct at
19-5704; Rev 3; 12/12
1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.

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71M6103 pdf
71M6xxx Data Sheet
The 71M6xxx isolated sensors provide a continuous data stream of ADC data plus an independent data
stream that contains auxiliary information as requested by the 71M654x. The ADC data is processed by
CE code in the 71M654x and stored in CE RAM. Auxiliary information is processed by the MPU of the
71M654x using I/O RAM registers.
Basic settings and functions of the 71M6xxx can be controlled by various I/O RAM registers in the
71M654x. The command sent towards the 71M6xxx is placed in the RCMD[4:2] register of the 71M654x,
with further specification contained in the TMUXRn[2:0] register. Refer to the 71M654x data sheets for
details.
Table 1 shows the allowable combinations of values in RCMD[4:2] and TMUXRn[2:0] , and the achieved
operation along with the type and format of data sent back by the 71M6xxx isolated sensors.
Table 1: Remote Interface Commands
RCMD[4:2] TMUXRn[2:0]
Read
Operation/Command
R6K_RD [15:0]
001 00X
TRIMT (see note), use bits [8:1]
001 01X Chip-characteristic TRIMBGC (see note), use bits [15:6]
001
10X
temperature data
TRIMBGA (see note), use bits [15:8]
001 11X
TRIMBGB bits [15:8], TRIMBGD bits [7:0]
(see note)
010 00X
Temperature
Output of the temperature sensor, bits [10:0]
010 01X
Supply voltage
Supply voltage measurement , bits [7:0]
010 10X
Chip version
Chip version code, use bits [15:8]
110 111
Reset
Note: TRIMBGA to TRIMBGD and TRIMT are values used for characterizing the individual 71M6xxx over temperature. Availability
of TRIMBGA to TRIMBGD and TRIMT depends on the part number (see Table 10 for details).
The remote interface commands listed in Table 1 enable the 71M654x to gather the following information
from the 71M6xxx:
Output of the temperature sensor
Information on how the device is characterized over temperature
Supply voltage
Chip version code
The control commands listed in Table 1 enable the 71M654x to initiate the following actions in the
71M6xxx:
Read the 71M6xxx temperature sensor
Read the 71M6xxx VCC sensor
Hardware reset
With hardware and temperature characterization information on each connected 71M6xxx isolated sensor
available to the 71M654x host MPU, temperature compensation of the energy measurement can be
implemented based on the individual temperature characteristics of the 71M6xxx isolated sensors. For
example, when the 71M6xxx are used in a polyphase meter containing three shunt resistors, the
temperature increase in each 71M6xxx can be monitored and used to compensate for the temperature
coefficient of the 71M6xxx VREF and the corresponding shunt resistor.
3 APPLICATIONS INFORMATION
3.1 Product Selection
A low-noise differential-input preamplifier applies gain to the signal from the current sensor to the optimal
input range of the ADC. The current sensor is connected to the inputs of the preamplifier through INP and
INN. The output of the preamplifier connects directly to the input of the ADC. See 5 Ordering Information
for available part types. Shunt resistances from 736µΩ to as low as 50µΩ can be accommodated,
depending on desired current range and part type.
5

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71M6103 arduino
71M6xxx Data Sheet
4 SPECIFICATIONS
4.1 Absolute Maximum Ratings
Table 3 shows the absolute maximum ranges for the device. Stresses beyond Absolute Maximum
Ratings may cause permanent damage to the device. These are stress ratings only and functional
operation at these or any other conditions beyond those indicated under recommended operating
conditions (4.3 Recommended Operating Conditions) is not implied. Exposure to absolute maximum
ratings conditions for extended periods may affect device reliability. All voltages are with respect to GND.
SUPPLIES AND GROUND PINS:
VCC
GND
ANALOG INPUT PINS:
Table 3: Absolute Maximum Ratings
INP, INN, SP, SN
TEMPERATURE:
Operating Junction Temperature (Peak, 100ms)
Operating Junction Temperature (Continuous)
Storage Temperature Range
Soldering Temperature (10s duration)
-0.5V to 4.6V
-0.1V to +0.1V
-10mA to +10mA,
-0.5V to (VCC + 0.5V)
+140°C
+125°C
-45°C to +165°C
+250°C
4.2 Recommended External Components
Table 4: Recommended External Components
NAME
C1
FROM
VCC
TO
GND
FUNCTION
Bypass capacitor for supply
R1, R2 Sensor
GND To establish proper bias for INP/INN pins
VALUE
1.0
1
UNITS
µF
k
4.3 Recommended Operating Conditions
Table 5: Recommended Operating Conditions
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
VCC Supply Voltage
2.5 3.6 V
Operating Temperature Range
-40 +85 C
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