Microchip微芯 MCP3919 产品介绍
说明
MCP3919是一款3V三通道模拟前端（AFE），包含三个同时采样的德尔塔-西格玛模数转换器（ADC）、三个PGA、相位延迟补偿块、内部参考电压、数字偏移和增益误差校准寄存器以及高速20 MHz SPI兼容串行接口。2线串行接口模式每相只需要一个双向隔离器，大大降低了系统成本。MCP3919 AFE能够连接到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。
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特性
Three Simultaneous Sampling A/D ConvertersEnables 0.1% Typical Active Power Measurement Error over a 10,000:1 Dynamic Range93.5 dB SINAD, -107 dBc THD2.7V - 3.6V AVDD, DVDD4 MHz Maximum Sampling FrequencyOversampling Ratio up to 4096Ultra Low Power Shutdown Mode with <10 µALow Drift 1.2V Internal Voltage Reference: 9 ppm/°CDifferential Voltage Reference Input PinsFlexible serial interface that includes both SPI and a simple 2-wire interface ideal for polyphase shunt energy metersPhase Delay Compensation with 1 µs Time ResolutionSeparate Data Ready Pin for Easy SynchronizationIndividual 24-bit Digital Offset and Gain Error Correction for Each ChannelHigh Gain PGA on Each Channel (up to 32V/V)16-Bit CRC Checksum and Interrupt AlertRegister Map Lock-122 dB Crosstalk between ChannelsContinuous Read/Write Modes for Minimum CommunicationAvailable in 28-Lead QFN and SSOP PackagesAEC-Q100 Grade 1参数
类型 | 描述 |
Resolution | 24 |
Sample Rate kSPS Max | 125 |
Input Channels Differential | 3 |
SNRTyp | 94 |
SFDRTyp | 112 |
ENOB | 15.2 |
INLTypLSB | 5 |
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