71M6515H-IGT/F Maxim Integrated Products, 71M6515H-IGT/F Datasheet
71M6515H-IGT/F
Manufacturer Part Number
71M6515H-IGT/F
Description
IC ENERGY METER AFE 3PH 64-LQFP
Manufacturer
Maxim Integrated Products
Datasheet
1.71M6515H-IGTF.pdf
(60 pages)
Specifications of 71M6515H-IGT/F
Mounting Style
SMD/SMT
Package / Case
LQFP-64
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
71M6515H-IGT/F
Manufacturer:
Maxim Integrated
Quantity:
10 000
GENERAL DESCRIPTION
The 71M6515H is a high-accuracy analog front-end
(AFE) IC that provides measurements for 3-quadrant
3-phase metering. The combination of a 21-bit
sigma-delta A/D converter with a six-input analog
front-end, a thermally compensated high-precision
reference, and a compute engine results in high
accuracy and wide dynamic range. Our Single
Converter Technology® reduces cross talk and cost.
This IC also provides RTC and battery backup for
time-of-use (TOU) metering.
Figure 1: Meter Block Diagram
As shown in the block diagram (Figure 1), the host
processor
through a UART interface using the programmable
IRQZ interrupt. The 71M6515H calculates and accu-
mulates meter measurements for each accumulation
interval. A high-speed synchronous serial port (SSI)
is provided to facilitate high-end metering. Integrated
rectifying functions on the battery-backup circuit
enable minimal external component usage and
minimum back-up current. Also, eight multipurpose
pins are provided for control of peripherals.
Page: 1 of 60
Single Converter Technology is a registered trademark of
Maxim Integrated Products, Inc.
REFERENCE
TERIDIAN 71M6515H
COMPUTE
VOLTAGE
ENGINE
RTC
A Maxim Integrated Products Brand
communicates
CONTROL
RAM
Battery
with
UART, IRQZ
DIO
the
SSI
© 20052011 Teridian Semiconductor Corporation
71M6515H
CESSOR
HOST
PRO-
FEATURES
High Accuracy
< 0.1% Wh accuracy over 2000:1 range
Exceeds IEC 62053/ANSIC 12.20 specifications
Up to 10ppm/C precision ultra-stable voltage
Single Converter Technology reduces cross talk
Six sensor inputs—referenced to V3P3
Compatible with CTs, resistive shunts and
Digital temperature compensation
Sag detection
Measures Wh, VARh, VAh, Vrms, Irms, V-to-V
Four-quadrant metering.
Four low-jitter pulse outputs from selectable
Four pulse count registers
Selectable default status for pulse pins
Same calibration data for 46Hz to 64Hz line
Broad CT phase compensation (±7deg)
Battery Backup
Powers real-time clock during power supply
Compatible with Li-ion, NiCd, or super capacitor
Battery backup current 2µA typical at 25°C
External Data Interface
UART control interface, two selectable data rates
8 general-purpose I/O pins with alarm capability
5 or 10MHz selectable high-speed synchronous
IRQ output signal for alarms and end of
Alarms on voltage sag, overvoltage, overcurrent
Low System Cost
Power consumption 30mW at 3.3V typical
Real-time clock with temperature compensation
Built-in power-fault detection
Single 32kHz crystal time base
Single-supply operation (3.3V)
64-lead LQFP package
reference
and power consumption
Rogowski Coil sensors
phase and load angle on each phase
measurements
frequency
outage
serial output for DSP interface
measurement intervals
Energy Meter IC
DATA SHEET
71M6515H
19-5361; Rev 7/11
JULY 2011
1.6