产品概述 返回TOPdQW嘉泰姆

The CXEP2330 is a high-accuracy analog front-end (AFE) IC that provides measurements for four-quadrant 3-phase metering. The combination of a 21-bit sigma-delta analog-to-digital converter with a six-input AFE, a thermally compensated high-precision reference, and a compute engine results in high accuracy and wide dynamic range. Our Single Converter Technology reduces crosstalk and cost. This IC also provides a real-time clock (RTC) and battery backup for time-of-use (TOU) metering.The host processor communicates with the CXEP2330 through a UART interface using the programmable IRQZ interrupt. The CXEP2330 calculates and accumulates meter measurements for each accumulation interval. A high-speed synchronous serial port (SSI) is provided to facilitate high-end metering.  Integrated rectifying functions on the battery-backup circuit enable minimal external component usage and minimum backup current. Also, eight multipurpose pins are provided for control of peripherals.

   产品特点 返回TOPdQW嘉泰姆

High Accuracy dQW嘉泰姆

 < 0.1% Wh accuracy over 2000:1 range dQW嘉泰姆

 Exceeds IEC 62053/ANSIC 12.20 specifications dQW嘉泰姆

 Up to 10ppm/dQW嘉泰姆

C precision ultra-stable voltage reference dQW嘉泰姆

 Single Converter Technology reduces cross talk and power consumption dQW嘉泰姆

 Six sensor inputs—referenced to V3P3 dQW嘉泰姆

 Compatible with CTs, resistive shunts and Rogowski Coil sensors dQW嘉泰姆

 Digital temperature compensation dQW嘉泰姆

 Sag detection dQW嘉泰姆

 Measures Wh, VARh, VAh, Vrms, Irms, V-to-V phase and load angle on each phase dQW嘉泰姆

 Four-quadrant metering. dQW嘉泰姆

 Four low-jitter pulse outputs from selectable measurements dQW嘉泰姆

 Four pulse count registers dQW嘉泰姆

 Selectable default status for pulse pins dQW嘉泰姆

 Same calibration data for 46Hz to 64Hz line frequency dQW嘉泰姆

 Broad CT phase compensation (±7deg) Battery Backup dQW嘉泰姆

 Powers real-time clock during power supply outage dQW嘉泰姆

 Compatible with Li-ion, NiCd, or super capacitor dQW嘉泰姆

 Battery backup current 2μA typical at 25°CdQW嘉泰姆

External Data Interface dQW嘉泰姆

 UART control interface, two selectable data rates dQW嘉泰姆

 8 general-purpose I/O pins with alarm capability dQW嘉泰姆

 5 or 10MHz selectable high-speed synchronous serial output for DSP interface dQW嘉泰姆

 IRQ output signal for alarms and end of measurement intervals dQW嘉泰姆

 Alarms on voltage sag, overvoltage, overcurrent Low System Cost dQW嘉泰姆

 Power consumption 30mW at 3.3V typical dQW嘉泰姆

 Real-time clock with temperature compensation dQW嘉泰姆

 Built-in power-fault detection dQW嘉泰姆

 Single 32kHz crystal time base dQW嘉泰姆

 Single-supply operation (3.3V)dQW嘉泰姆

 64-lead LQFP packagedQW嘉泰姆

   应用范围 返回TOPdQW嘉泰姆

Industrial, Commercial, and Residential MetersdQW嘉泰姆

   技术规格书（产品PDF) 返回TOP dQW嘉泰姆

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