features and benefits

　　?accurate power monitoring for ac and dc applications

　　?ul 62368-1 (edition 2) certified for reinforced isolation

　　?accurate measurements of active, reactive, and apparent power, as well as power factor

　　?separate rms and instantaneous measurements for both voltage and current channels

　　?two programmable averaging blocks

　　?low primary conductor resistance for low power loss and high inrush current withstand capability

　　?compatible with floating and non-floating gnd

　　?dedicated voltage or current zero crossing pin

　　?fast, user-programmable overcurrent fault pin (5 μs typ.)

　　?user-programmable undervoltage and overvoltage rms thresholds

　　?1 khz bandwidth

　　?current sensing range up to 90 a

　　?options for i2c or spi digital interface protocols

　　deion

　　the allegro acs37800 power monitoring ic greatly simplifiesthe addition ofpower monitoring to many ac or dc poweredsystems. the sensor may be powered from the same supplyas the system mcu, eliminating the need for multiple powersupplies. the device construction includes a copper conductionpath that generates a magnetic field proportional to appliedcurrent. the magnetic field is sensed differentially to rejecterrors introduced by common mode fields.allegro hall-effect-based, galvanically isolated current sensingtechnology achieves reinforced isolation ratings in a small pcbfootprint. these features enable isolated current sensing withoutexpensive rogowski coils, oversized current transformers.isolated operational amplifiers, or the power loss of shuntresistors.

　　the acs37800 power monitoring ic offers key powermeasurement parameters that can easily be accessed through itsspi or 12c digital protocol interfaces. dedicated and configurablei/o pins for voltage/current zero crossing, undervoltage andovervoltage reporting, and fast overcurrent fault detection areavailable in 12c mode. user configuration ofthe ic is availablethrough on-chip eeprom.

　　the acs37800 is provided in the soic16 wide-body package,is lead (pb) free, and is fully calibrated prior to shipment fromthe allegro factory, customer calibration can further increaseaccuracy in application.

　　? 李 进

　　? 深圳博瑞图电子科技有限公司

　　?mob :

　　?qq : 52519094

　　?add :深圳市福田区中航路都会轩3305

　　?email : lijin810230@163.com

　　?网 址：