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电子发烧友网>电子资料下载>电源技术>数字电源监控和alertb转换引脚输出ADM1191数据表

数字电源监控和alertb转换引脚输出ADM1191数据表

2017-10-25 | rar | 0.37 MB | 次下载 | 免费

资料介绍

  The ADM1191 is an integrated current sense amplifier that offers digital current and voltage monitoring via an on-chip 12-bit analog-to-digital converter (ADC), communicated through an I2 C® interface. An internal current sense amplifier measures voltage across the sense resistor in the power path via the VCC pin and the SENSE pin. A 12-bit ADC can measure the current seen in the sense resistor, as well as the supply voltage on the VCC pin. An industry-standard I 2 C interface allows a controller to read current and voltage data from the ADC. Measurements can be initiated by an I 2 C command or via the convert (CONV) pin. The CONV pin is especially useful for synchronizing reads on multiple ADM1191 devices. Alternatively, the ADC can run continuously, and the user can read the latest conversion data whenever it is required. Up to 16 unique I 2 C addresses can be created, depending on the way the A0 pin and the A1 pin are connected. A SETV pin is also included. A voltage applied to this pin is internally compared with the output voltage on the current sense amplifier. The output of the SETV comparator asserts when the current sense amplifier output exceeds the SETV voltage. When this event occurs, the ALERTB output asserts.The ALERTB output can be used as a flag to warn a microcontroller or field programmable gate array (FPGA) of an overcurrent condition. ALERTB outputs of multiple ADM1191 devices can be tied together and used as a combined alert. The ADM1191 is packaged in a 10-lead MSOP.
数字电源监控和alertb转换引脚输出ADM1191数据表

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