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首页 > Products > MCU Memory ADC Clock  > MCU > Energy Measurement ASIC >Cxem2304e integrated circuit is the core metering chip of electronic watt hour meter It adopts over sampling and digital signal processing technology in its design
Cxem2304e integrated circuit is the core metering chip of electronic watt hour meter It adopts over sampling and digital signal processing technology in its design

This technology greatly improves the measurement accuracy of the chip. At the same time, the data after a / D conversion are all calculated and processed by digital circuit, which ensures that
Long term stability of the chip. The electronic watt hour meter based on this chip has the characteristics of simple peripheral circuit, high precision and good stability, which is suitable for
Electric energy metering for single-phase two wire power users

Cxem2304e integrated circuit is the core metering chip of electronic watt hour meter It adopts over sampling and digital signal processing technology in its design
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目录Ttn嘉泰姆

    1.产品概述           2.产品特点         3.应用范围         4.技术规格书下载(PDF文档)Ttn嘉泰姆

    5.产品封装图         6.电路原理图      7.相关产品Ttn嘉泰姆

一.产品概述  Ttn嘉泰姆


CXEM2304E 集成电路是电子式电度表的核心计量芯片,它在设计上采用了过采样和数字信号处理技Ttn嘉泰姆

术‚从而大大地提高了芯片的测量准确度,同时,在A/D 转换后的数据均由数字电路进行运算和处理,保证了Ttn嘉泰姆

芯片的长期稳定性。基于此芯片设计的电子式电度表具有外围电路简单、精度高、稳定性好等特点,适用Ttn嘉泰姆

于单相两线电力用户的电能计量。Ttn嘉泰姆

CXEM2304E 对正、反向有功功率均可测量,且可将反向有功功率转换成与正向有功功率方向一致的Ttn嘉泰姆

脉冲输出,同时在芯片引脚(Pin12)上给出了反向用电指示。因此, 用 CXEM2304E 制成的电子式电度表具Ttn嘉泰姆

有很强的防窃电能力。Ttn嘉泰姆

CXEM2304E 具有两种不同频率的脉冲输出。Pin14输出以较高频率的脉冲,用于校验和计算机数据处Ttn嘉泰姆

理,而 Pin15 和 Pin16 输出一组较低频率的脉冲,用于直接驱动步进电机,以推动计度器进行电量累Ttn嘉泰姆

积。Ttn嘉泰姆

在 CXEM2304E 中充分考虑到兼顾电度表潜动和起动性能的不同要求,采用了合理的数字化的防潜动Ttn嘉泰姆

阀值设计,在保证可靠地防止潜动的前提下,使起动电流远低于标准要求。Ttn嘉泰姆

二.产品特点Ttn嘉泰姆


 高精度,在输入动态工作范围(500:1)内,非线性测量误差小于 0.1%Ttn嘉泰姆

 校表过程中高稳定性,输出频率波动小于 0.1%Ttn嘉泰姆

精确测量正、负两个方向的有功功率,且以同一方向计算电能Ttn嘉泰姆

慢速输出脉冲能直接驱动电机工作,快速输出脉冲可用于计算机数据处理Ttn嘉泰姆

防窃电功能,逻辑输出脚 REVP 用于显示反向用电或者错误用电状况Ttn嘉泰姆

芯片上有电压检测电路,检测掉电状况具有防潜动功能Ttn嘉泰姆

芯片上带参考电压源 2.5V±8%(温度系数典型值 30ppm/℃),也可以使用外部电压源Ttn嘉泰姆

芯片上带晶振时钟(芯片内置晶振)单工作电源 5VTtn嘉泰姆

低功耗 15mW(典型值)Ttn嘉泰姆

采用 0.35um CMOS 工艺,批量的一致性和产品可靠性得到进一步提高。Ttn嘉泰姆

三.应用范围    Ttn嘉泰姆


   电表Ttn嘉泰姆

四.技术规格书(产品PDF)    Ttn嘉泰姆


需要详细的PDF规格书请扫一扫微信联系我们Ttn嘉泰姆

 QQ截图20160419174301.jpgTtn嘉泰姆

五.产品封装图Ttn嘉泰姆


 image.pngTtn嘉泰姆

六.电路原理图   Ttn嘉泰姆


 QQ截图20160420124718.jpgTtn嘉泰姆

七.相关芯片选择指南Ttn嘉泰姆


电能计量专用电路(Energy Measurement ASIC)
Part No. Meter Measurement Power Consumption Anti-Tamper Output Clock VDD Package
CXEM2303 Single Active 20mW 2 Channels Pulse Internal 5V SOP16
CXEM2304E Single Active 3000:1 15mW Reverse Indication Pulse Internal 5V SOP16
CXEM2305 Single Multifunction (Active, I, V, P.) 6mW   Pulse Internal 3.3V SOP8
CXEM2306A Single Active 15mW 2 Channels Pulse 3.58MHz 5V SSOP24
CXEM2307E Single Active 15mW Reverse Indication Pulse 3.58MHz 5V SSOP24
CXEM2308B Single Multifunction (Active   5000:1, I, V, P, S, PF, Freq.) 25mW 3 Channels Pulse, SPI 3.58MHz 5V SSOP24
CXEM2308GX Single Multifunction (Active 6000:1, I, V,   P, S, PF, Freq.) 20mW 3 Channels Pulse, UART 3.58MHz 5V SOP16
CXEM2309B Single Multifunction (Active 5000:1, I, V, P, S, PF, Freq.) 25mW Reverse Indication Pulse, SPI 3.58MHz 5V SOP16
CXEM2310A Single Multifunction (Active 3000:1, Reactive 3000:1, I, V, P,   S, PF, Freq.) 25mW 2 Channels Pulse, SPI/UART 3.58MHz 5V SSOP24
CXEM2310B Single Multifunction (Active 3000:1, Reactive 3000:1, I, V, P,   S, PF, Freq.) 25mW 2 Channels Pulse, SPI 3.58MHz 5V SSOP20
CXEM2311 Three Active 3000:1 25mW Reverse Indication By Any Pulse 2.5~4MHz 5V SOP24
CXEM2312C Three Active 3000:1 25mW Reverse Indication By Any Pulse 2.5~4MHz 5V SOP24
CXEM2313B Three Multifunction (Active   3000:1, Reactive 3000:1, I, V, P, Q, S, PF, Freq ) 30mW Reverse Indication By   Any 2Pulse,SPI 3.58MHz 3.3V LQFP44