Microchip微芯 MCP3911 产品介绍
说明
MCP3911是一款2.7V至3.6V双通道模拟前端(AFE),包含两个同时采样的德尔塔-西格玛模数转换器(ADC)、两个PGA、相位延迟补偿块(1µs分辨率)、低漂移(9ppm/°C)1.2V内部电压参考、调制器输出块和高速20MHz SPI兼容串行接口。MCP3911能够连接各种电压和电流传感器,包括分流器、电流互感器、Rogowski线圈和霍尔效应传感器。它支持10000:1的动态范围。
请联系jeff.keip@microchip.com如果你需要在本页找不到的东西
特性
Flexible serial interface that includes both SPI and a simple 2-wire interface ideal for polyphase shunt energy metersProgrammable Data Rate up to 125 ksps- 4 MHz Maximum Sampling FrequencyOversampling Ratio up to 4096Ultra Low Power Shutdown Mode with <2 µA-122 dB Crosstalk between the Two ChannelsDifferential Voltage Reference Input PinsHigh Gain PGA on Each Channel (up to 32V/V)Separate Modulator Output Pins for Each ChannelSeparate Data Ready Pin for Easy SynchronizationIndividual 24-bit Digital Offset and Gain Error Correction for Each ChannelContinuous Read/Write Modes for Minimum CommunicationAvailable in Small 20-lead QFN and SSOP PackagesSpecifications valid down to -45°C operationAEC-Q100 Grade 1参数
类型 | 描述 |
Resolution | 24 |
Sample Rate kSPS Max | 125 |
Input Channels Differential | 2 |
SNRTyp | 95 |
SFDRTyp | 111 |
ENOB | 15.4 |
INLTypLSB | 5 |