ADE7953是一款高精度电能计量IC,主要用于单相应用。它能够测量线路电压和电流,并计算有功、无功、视在功率以及瞬时均方根电压和电流。该器件内置三个Σ-Δ型ADC和一个高精度电能计量内核。第三输入通道可同时测量零线电流,支持窃电检测和零线电流计费。附加通道集成了完整的信号路径,允许执行各种测量。各输入通道均支持独立且灵活的增益级,因此该器件适合与各种电流传感器一起使用,如电流变压器(CT)和低阻值分流电阻等。两个片内积分器为使用罗氏线圈传感器提供了便利。ADE7953可以通过多种通信接口访问片内计量寄存器,包括SPI、I2C和UART。两个可配置的低抖动脉冲输出引脚提供与有功、无功或视在功率及电流和电压均方根值成比例的输出。通过外部IRQ引脚可以获得全面的电能质量信息,如过流、过压、峰值和骤降检测等。该器件包括独立的有功、无功和视在空载检测功能,用以防止电表“爬电”。此外还提供了专用反向电源(REVP)、过零电压(ZX)和过零电流(ZX-I)引脚。ADE7953电能计量IC采用3.3V电源供电,提供28引脚LFCSP封装。
The ADE7953 is a high accuracy, 3-phase electrical energy measurement IC with serial interfaces and three flexible pulse outputs. The ADE7953 incorporates second-order Σ-Δ ADCs, a digital integrator, reference circuitry, and all the signal processing required to perform total (fundamental and harmonic) active, reactive and apparent energy measurement, fundamental active and reactive energy measurement and rms calculations. A fixed function digital signal processor (DSP) executes this signal processing.The ADE7953 is suitable to measure active, reactive, and apparent energy in various 3-phase configurations, such as WYE or DELTA services, with both three and four wires. The ADE7953 provides system calibration features for each phase, that is, rms offset correction, phase calibration, and gain calibration. The CF1, CF2 and CF3 logic outputs provide a wide choice of power information: total/fundamental active/reactive power, total apparent power, or sum of current rms values.The ADE7953 has waveform sample registers that allow access to all ADC outputs. The device also incorporates power quality measurements such as short duration low or high voltage detections, short duration high current variations, line voltage period measurement and angles between phase voltages and currents. Two serial interfaces can used to communicate with the ADE7953 : SPI or I²C while a dedicated high speed interface, HSDC (High Speed Data Capture) port, can be used in conjunction with I²C to provide access to the ADC outputs and real time power information. The ADE7953 has also two interrupt request pins, IRQ0 and IRQ1, to indicate that an enabled interrupt event has occurred.Three specially designed low power modes ensure the continuity of the energy accumulation when the ADE7953 is in tampering situation.The ADE7953 is available in 40-lead LFCSP lead free package.
ADE7953 特点
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ADE7953 技术指标
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产品型号 | 封装 | 引脚 | 温度范围 | 包装和数量 | 报价*(100-499) | 报价*1000 pcs |
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ADE7953ACPZ 产品状态: 量产 | 28 ld LFCSP (5x5mm w/3.40mm EP) | 28 | 工业 | Tray, 490 | $ 2.38 | $ 2.29 |
ADE7953ACPZ-RL 产品状态: 量产 | 28 ld LFCSP (5x5mm w/3.40mm EP) | 28 | 工业 | Reel, 5000 | - | $ 2.29 |