Microchip微芯 MCP3912 产品介绍
说明
MCP3912是一款3V四通道模拟前端(AFE),包含四个同时采样的德尔塔-西格玛模数转换器(ADC)、四个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。MCP3912 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
Four Simultaneous Sampling 24-bit Delta-Sigma A/D Converters93.5 dB SINAD, -107 dBc THD, 112 dBFS SFDREnables 0.1% Typical Active Power Measurement Error over a 10,000:1 Dynamic Range2.7V - 3.6V AVDD, DVDD16-Bit CRC Checksum and Interrupt AlertOversampling Ratio up to 4096Register Map LockUltra Low Power Shutdown Mode with <10 µA-122 dB Crosstalk between the Two ChannelsDifferential Voltage Reference Input PinsHigh Gain PGA on Each Channel (up to 32V/V)Separate Data Ready Pin for Easy SynchronizationIndividual 24-bit Digital Offset and Gain Error Correction for Each ChannelContinuous Read/Write Modes for Minimum CommunicationAvailable in 28-Lead QFN and SSOP PackagesExtended Temperature Range: -40°C to +125°CAEC-Q100 Grade 1参数
类型 | 描述 |
Resolution | 24 |
Sample Rate kSPS Max | 125 |
Input Channels Differential | 4 |
SNRTyp | 94 |
SFDRTyp | 112 |
ENOB | 15.2 |
INLTypLSB | 5 |