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| ADI ADE51xx SOC单相电表方案 | |||||
作者：佚名 文章来源：Internet 点击数： 更新时间：2008-5-12  |
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ANALOG DEVICES EXPANDS ENERGY METERING PORTFOLIO TO ADDRESS ADVANCED, EMERGING MONITORING APPLICATIONS ADE51xx and ADE55xx system-on-chip energy metering solutions increase RAM and program memory to serve more demanding global metering communications protocols The ADE5166/ADE5169/ADE5566/ADE55691 integrate Analog Devices, Inc., energy (ADE) metering IC analog front end and fixed function DSP solution with an enhanced 8052 MCU core, a full 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 active, reactive, and apparent energy calculations, as well as voltage and current rms measure- ments. 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 full real-time clock with a power supply backup pin, two independent UART interfaces, 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 62 kB of flash memory. The ADE5166/ADE5169/ADE5566/ADE5569 also include a 108-/104-segment LCD driver with the capability to store up to 4 LCD screens in memory. This driver generates voltages capable of driving LCDs up to 5 V. 通用特性: Wide supply voltage operation: 2.4 V to 3.7 V Internal bipolar switch between regulated and battery inputs Ultralow power operation with power saving modes (PSM) Full operation: 4 mA to 1.6 mA (PLL clock dependent) Battery mode: 3.2 mA to 400 μA (PLL clock dependent) Sleep mode Real-time clock (RTC) mode: 1.5 μA RTC and LCD mode: 27 μA (LCD charge pump enabled) Reference: 1.2 V ± 0.1% (10 ppm/°C drift) 64-lead RoHS package options Low profile quad flat package (LQFP) Operating temperature range: −40°C to +85°C ENERGY MEASUREMENT FEATURES Proprietary analog-to-digital converters (ADCs) and digital signal processing (DSP) provide high accuracy active (WATT), reactive (VAR), and apparent energy (VA) measurement Less than 0.1% error on active energy over a dynamic range of 1000 to 1 @ 25°C Less than 0.5% error on reactive energy over a dynamic range of 1000 to 1 @ 25°C (ADE5569 and ADE5169 only) Less than 0.5% error on root mean square (rms) measurements over a dynamic range of 500 to 1 for current (Irms) and 100 to 1 for voltage (Vrms) @ 25°C Supports IEC 62053-21, IEC 62053-22, IEC 62053-23, EN 50470-3 Class A, Class B, and Class C, and ANSI C12-16 Differential input with programmable gain amplifiers (PGAs) supports shunts, current transformers, and di/dt current sensors (ADE5569 and ADE5169 only) Two current inputs for antitamper detection in the ADE5166/ADE5169 High frequency outputs proportional to Irms, active, reactive, or apparent power (AP) 微处理器特性: 8052-based core Single-cycle 4 MIPS 8052 core 8052-compatible instruction set 32.768 kHz external crystal with on-chip PLL Two external interrupt sources External reset pin Low power battery mode Wake-up from I/O, temperature change, alarm, and universal asynchronous receiver/transmitter (UART) LCD driver operation with automatic scrolling Temperature measurement Real-time clock Counter for seconds, minutes, hours, days, months, and years Date counter including leap year compensation Automatic battery switchover for RTC backup Operation down to 2.4 V Ultralow battery supply current: 1.5 μA Selectable output frequency: 1 Hz to 16.384 kHz Embedded digital crystal frequency compensation for calibration and temperature variation 2 ppm resolution Integrated LCD driver 108-segment driver for the ADE5566/ADE5569 and 104-segment driver for the ADE5166/ADE5169 2×, 3×, or 4× multiplexing Four LCD memory banks for screen scrolling LCD voltages generated internally or with external resistors Internal adjustable drive voltages up to 5 V independent of power supply level On-chip peripherals Two independent UART interfaces SPI or I2C Watchdog timer Power supply management with user-selectable levels Memory: 62 kB flash memory, 2.256 kB RAM Development tools Single-pin emulation IDE-based assembly and C-source debugging   图1.ADE5566/ADE5569功能方框图  图2.ADE5166/ADE5169功能方框图  图3.ADE5166和ADE5169电表方框图  图4. ADE5166 和ADE5169的ADC和信号处理框图 详情请见: http://www.analog.com/UploadedFiles/Data_Sheets/ADE5166_5169_5566_5569.pdf |
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