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| AD876JR资料 | |
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AD876JR PDF Download |
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File Size : 105 KB
Manufacturer:AD Description:The AD876JR provides different solutions to measure Active and Apparent Energy from the six analog inputs thus en- abling the use of the AD876JR in various Power meter services as 3-phase 4-wire, 3-phase 3-wire but also 4-wire delta. In addition to RMS calculation, Real and Apparent power informations, the AD876JR provides system calibration features for each phase, i.e., channel offset correction, phase calibration and gain calibration. The CF logic output gives instantaneous real power information. The AD876JR has a waveform sample register which enables access to ADC outputs. The part also incorporates a detec- tion circuit for short duration low or high voltage variations. The voltage threshold levels and the duration (no. of half line cycles) of the variation are user programmable. A zero crossing detection is synchronized which the zero crossing point of the line voltage of each of the three phases. This information is used to measure each lines Period. It is also used internally to the chip in the Line Active Energy and Line Apparent Energy accumulation modes. This permits faster and more accurate calibration of the power calcula- tions. This signal is also useful for synchronization of relay switching. Data is read from the AD876JR via the SPI serial interface. The interrupt request output (IRQ) is an open drain, active low logic output. The IRQ output will go active low when one or more interrupt events have occurred in the AD876JR. A status register will indicate the nature of the interrupt. The AD876JR is available in a 24-lead SOIC package. |
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| 1PCS | 100PCS | 1K | 10K | ||
| 价 格 | |||||
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型 号：AD876JR 厂 家：AD 封 装：07+ 批 号：81 数 量： 说 明： |
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运 费： 所在地： 新旧程度： |
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| 联系人：张小姐、 颜先生13661569158 |
| 电 话：400-878-9158,021-54286636 |
| 手 机：13661569158 |
| QQ：12230627,596815151,531081618 |
| MSN： |
| 传 真：021-54286636 |
| EMail：susumu@susumu.com.cn |
| 公司地址： 上海市古楼公路348弄25号 |
建议使用分辨率:1024*768