原标题：ADI ADE51xx单相电表解决方案

　　ADI公司的ADE5166/ADE5169/ADE5566/ADE55691集成了电表模拟前端(AFE)和具有8052 MCU核,RTC和LCD驱动器以及外设的固定功能DSP解决方案. 工作电压2.4V-3.7V,25度C时动态范围1000:1时的有功功率误差小于0.1%,无功功率误差小于0.5%,微处理器采用基于8052内核,8052兼容的指令集,单周期4MIps特性.本文介绍了ADE5166/ADE5169/ADE5566/ADE5569主要特性,方框图, ADE5566/ADE5569电表框图以及采用8052 MCU,RTC和LCD驱动器的单相电表评估板主要特性,电路图,材料清单和PCB布局图.

　　The ADE5166/ADE5169/ADE5566/ADE55691 integrate the 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 measurements. This information is accessible for energy billing by using the 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 RTC with a power supply backup pin, an SPI or I2C interface, and two independent UART interfaces. The ready-to-use information from the ADE core reduces the requirement for program memory size, making it easy to integrate complicated design into 62 kB of flash memory.

　　The ADE5166/ADE5169 include a 104-segment LCD driver and the ADE5566/ADE5569 include a 108-segment LCD driver, each with the capability to store up to four LCD screens in memory. This driver generates voltages capable of driving LCDs up to 5 V.

　　ADE5166/ADE5169/ADE5566/ADE5569主要特性:

　　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: 4.4 mA to 1.6 mA (PLL clock dependent)

　　Battery mode: 3.3 mA to 400 μA (PLL clock dependent)

　　Sleep mode

　　Real-time clock (RTC) mode: 1.7 μA

　　RTC and LCD mode: 38 μA (LCD charge pump enabled)

　　Reference: 1.2 V ± 0.1% (10 ppm/°C drift)

　　64-lead, low profile quad flat, RoHS-compliant package (LQFP)

　　Operating temperature range: −40℃ to +85℃

　　能量测量特性:

　　Proprietary analog-to-digital converters (ADCs) and digital signal processing (DSP) provide high accuracy active (watt), reactive (var), and apparent energy (volt-ampere (VA)) measurement

　　<0.1% error on active energy over a dynamic range of 1000 to 1 @ 25℃

　　<0.5% error on reactive energy over a dynamic range of 1000 to 1 @ 25℃ (ADE5169 and ADE5569 only)

　　<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℃

　　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 (ADE5169 and ADE5569 only) 2 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

　　2 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 (RTC)

　　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: 1.7 μA

　　Selectable output frequency: 1 Hz to 16 kHz

　　Embedded digital crystal frequency compensation for calibration and temperature variation of 2 ppm resolution

　　Integrated LCD driver

　　108-segment driver for the ADE5566 and ADE5569

　　104-segment driver for the ADE5166 and ADE5169

　　2×, 3×, or 4× multiplexing

　　4 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

　　2 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

　　ADE5166/ADE5169 Functional Block Diagram

　　图1.ADE5566/ADE5569功能框图

　　图2.ADE5566/ADE5569电表框图

　　采用8052 MCU,RTC和LCD驱动器的单相电表评估板

　　(ADE71xx/ADE75xx/ADE51xx/ADE55xx 系列)

　　The EVAL-ADE7169EBZ-2/ADE5169EBZ-2 kit includes an isolated USB-to-UART converter (ADE8052Z-DWDL1) for communication and debugging purposes. The ADE7116/ADE7166/ADE7169/ADE7566/ADE7569/ADE5166/ADE5169/ADE5566/ADE5569 (hereafter referred to as ADE71xx/ADE75xx/ ADE51xx/ADE55xx) family is supported by the IAR develop-ment environment. Evaluation software developed in LabVIEW™ provides the means to evaluate the performance of the ADE71xx/ ADE75xx/ADE51xx/ADE55xx.

　　The evaluation kit includes a CD that provides all of the asso-ciated documentation, tools, and drivers to set up and use the evaluation board for the ADE71xx/ADE75xx/ADE51xx/ADE55xx.

　　评估板主要特性:

　　Full evaluation kit including evaluation board hardware, evaluation software, and development tools

　　Supported by IAR development tools for assembly and C code development Isolated USB-to-UART communication

　　LabVIEW evaluation software for evaluation of meter performance LabVIEW download tools for user firmware download

　　Single evaluation board supports ADE7116/ADE7166/ADE7169/ADE7566/ADE7569 and ADE5166/ADE5169/ADE5566/ADE5569

　　EVAL-ADE7169EBZ-2 comes with ADE7169 IC installed

　　EVAL-ADE5169EBZ-2 comes with ADE5169 IC installed

　　图3.ADE71xx/ADE75xx/ADE51xx/ADE55xx评估板外形图

　　图4.CT传感器连接到电流通道

　　图5.连接两个CT到电流通道

　　图6.连接一个分流器和一个CT到电流通道

　　图7.分流器用作电流传感器

　　图8.评估板电路图

　　评估板材料清单(BOM):

　　图9.评估板PCB布局图