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SC7755S Datasheet(PDF) 1 Page - Silan Microelectronics Joint-stock |
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SC7755S Datasheet(HTML) 1 Page - Silan Microelectronics Joint-stock |
1 / 9 page SC7755 ELECTRICITY POWER METER CIRCUIT SSOP-24 SDIP-24 DESCRIPTION The SC7755 is a high accuracy electrical energy measurement IC that can provides superior stability and accuracy over extremes in environmental conditions and over time. The SC7755 does not exhibit any creep when there is no load. The SC7755 supplies average real power information on the low frequency outputs F1 and F2. This logic outputs may be used to directly drive an electromechanically 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 SC7755 includes a power supply monitoring circuit on the AVDD supply pin. If the supply falls below 4V, the SC7755 will be reset and F1, F2 will be set to logic high, CF will be set to logic low at the same time. The SC7755 provides synchronous frequency output for auto- reading meter system. The CF logic output is synchronous with the F1 and F2 logic output to ensure the show value of the meter is consonant with the real value. ORDERING INFORMATION Device Package SC7755S SSOP-24-300-0.65 SC7755 SDIP-24-300-2.54 FEATURES * Single 5V supply, low power. * On-chip power supply monitoring. * On-chip reference with external overdrive capability. * Supplies average real power on the frequency outputs F1 and F2, which can drive for electromechanical counters directly. * The high frequency output CF is intended for calibration and supplies instantaneous real power. * Less than 0.1% error over a dynamic range of 500 to 1. * On-chip creep protection (No load threshold). * The logic output REVP can be used to indicate a potential miswiring or negative power. * A PGA in the current channel make flexible to select the shunt and burden resistance. HANGZHOU SILAN MICROELECTRONICS CO.,LTD REV:2.2 2008.01.07 Http : www.silan.com.cn Page 1 of 10 |
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