BL0955

BL0955 Single-Phase Energy MeteringIC (compatible with AD7755) GENERAL DESCRIPTION: The BL0955 is a high accuracy electrical energy measurement IC. The part specifications surpass the accuracy requirements as quoted in the IEC1036 standard. See Analog Devices’ Application Note AN-559 for a description of an IEC1036 watt-hour meter reference design. The only analog circuitry used in the BL0955 is in the ADCs and reference circuit. All other signal processing (e.g., multiplication and filtering) is carried out in the digital domain. This approach provides superior stability and accuracy over extremes in environmental conditions and over time. The BL0955 supplies average real power information on the low frequency outputs F1 and F2. These logic outputs may be used to directly drive an electromechanical counter or interface to an MCU. The CF logic output gives instantaneous real power information. This output is intended to be used for calibration purposes, or interfacing to an MCU. The BL0955 includes a power supply monitoring circuit on the AVDD supply pin. The BL0955 will remain in a reset condition until the supply voltage on AVDD reaches 4 V. If the supply falls below 4 V, the BL0955 will also be reset and no pulses will be issued on F1, F2 and CF. w w w a d . h s ta 4 t ee . u m o c The BL0955 is available in 24-lead DIP and SSOP packages. SSOP24 DIP24 Address£º No.810, YiShan Road ShangHai China Tel£º 86-021-64850700 Fax£º 86-64852222 Zip.200233 ww.DataShe...