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71M6515H Datasheet(PDF) 1 Page - Teridian Semiconductor Corporation |
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71M6515H Datasheet(HTML) 1 Page - Teridian Semiconductor Corporation |
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1 / 60 page  71M6515H Energy Meter IC DATA SHEET JULY 2011 Page: 1 of 60 © 2005 2011 Teridian Semiconductor Corporation 1.6 A Maxim Integrated Products Brand 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. HOST PRO- CESSOR SSI UART, IRQZ VOLTAGE REFERENCE COMPUTE ENGINE RTC Battery RAM TERIDIAN 71M6515H DIO CONTROL Figure 1: Meter Block Diagram As shown in the block diagram (Figure 1), the host processor communicates with the 71M6515H 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. 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 reference Single Converter Technology reduces cross talk and power consumption Six sensor inputs—referenced to V3P3 Compatible with CTs, resistive shunts and Rogowski Coil sensors Digital temperature compensation Sag detection Measures Wh, VARh, VAh, Vrms, Irms, V-to-V phase and load angle on each phase Four-quadrant metering. Four low-jitter pulse outputs from selectable measurements Four pulse count registers Selectable default status for pulse pins Same calibration data for 46Hz to 64Hz line frequency Broad CT phase compensation (±7deg) Battery Backup Powers real-time clock during power supply outage 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 serial output for DSP interface IRQ output signal for alarms and end of measurement intervals 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 Single Converter Technology is a registered trademark of Maxim Integrated Products, Inc. 19-5361; Rev 7/11 |
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Similar Description - 71M6515H_11 |
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