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MCP3905: Energy-Metering ICs with Active (Real) Power Pulse Output
The MCP3905/06 devices are energy-metering ICs designed to support the IEC 62053 International Metering Standard Specification. They supply a frequency output proportional to the average active (real) power, as well as a higher-frequency output proportional to the instantaneous power for meter calibration. They include two 16-bit, delta-sigma ADCs for a wide range of IB and IMAX currents and/or small shunt (< 200 µΩ) meter designs. It includes an ultra-low drift voltage reference with < 15 ppm/°C through a specially designed band gap temperature curve for the minimum gradient across the industrial temperature range. A fixed-function DSP block is on-chip for active (real) power calculation. Strong output drive for mechanical counters are on-chip to reduce field failures and mechanical counter sticking.
http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1335&dDocName=en024153 -
MCP3909: Energy Metering IC with SPI Interface and Active Power Pulse Output
The MCP3909 device is an energy-metering IC designed to support the IEC 62053 international metering standard specification.
Features
- PGA for small signal inputs supports low value shunt current sensor
- Digital waveform data access through SPI
interface
- 16-bit Dual ADC output data words
- 20-bit Multiplier output data word - Dual functionality pins support serial interface access and simultaneous Active Power Pulse Output
- Supports IEC 62053 International Energy Metering Specification and legacy IEC 1036/ 61036/687 Specifications
- Two 16-bit second order delta-sigma Analog-to- Digital Converters (ADCs) with multi-bit DAC - 81 dB SINAD (typ.) both channels
- 0.1% typical active energy measurement error over 1000:1 dynamic range
- Industrial Temperature Range: -40°C to +85°C
- Ultra-low drift on-chip reference: 15 ppm/°C (typ.)
- Direct drive for electromagnetic mechanical counter and two-phase stepper motors
- Low IDD of 4 mA (max.)
- Tamper output pin for negative power indication
http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1335&dDocName=en520376
The ADE7566/ADE7569/ADE7166/ADE7169 integrate Analog Devices, Inc., energy (ADE) metering IC analog front end and fixed function DSP solution with an enhanced 8052 MCU core, an RTC, an LCD driver, and all the peripherals to make an electronic energy meter with an LCD display in a single part.
The ADE measurement core includes reactive, active, and apparent energy calculations, as well as voltage and current RMS measurements. This information is ready to use for energy billing by using built-in energy scalars. Many power line supervisory features such as SAG, peak, and zero crossing are included in the energy measurement DSP to simplify energy meter design.
The microprocessor functionality includes a single-cycle 8052 core, a real-time clock with a power supply backup pin, a UART, and an SPI or I²C® interface. The ready-to-use information from the ADE core reduces the program memory size requirement, making it easy to integrate complicated design into 16 kB of flash memory.
The ADE7566/ADE7569/ADE7166/ADE7169 also include a 108-/104-segment LCD driver. This driver generates voltages capable of driving LCDs up to 5 V.http://www.analog.com/en/prod/0,2877,ADE7569,00.html
The MCP3909 3-Phase Energy Meter Reference Design is a fully functional Flash MCU based 3-phase energy meter. The meter comes populated with components for a 220V, 5(10)A system complete with plastic IEC compliant energy meter case.
http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1406&dDocName=en520559
The MCP3905 Evaluation board is designed to test out a variety of energy meter designs. On the input side high voltage line and load AC-plug headers are included, along with mounting holes for shunts, current transformers, and screw-type connections for wiring. On the output side a large prototype area is included along with optical isolation and a standard PICtail header for experiment with a variety of PIC-based energy meter designs.
Features
- PIC demonstration board connections (PICtail) with optical isolator
- On-board power supply circuitry for power-supply evaluation and experimentation
- Jumpers for gain and frequency selection
- Evaluation system for a variety of energy meter designs
- Easy connection to line and load experiments with AC plug and screw-type connections
- Resistive network with mechanical potentiometer for calibration experimentation
http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1406&dDocName=en024092
