Microchip微芯 MCP3910 产品介绍
说明
MCP3910是一款3V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内部参考电压、调制器输出块和高速20MHz SPI兼容串行接口。对于基于多相并联的电能表,MCP3910双线串行接口每相只需要一个双向隔离器,大大降低了系统成本。MCP3910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。它能够支持10000:1的动态范围
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 | 94 |
SFDRTyp | 112 |
ENOB | 15.2 |
INLTypLSB | 5 |