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说明

MCP3914是一个3V八通道模拟前端（AFE，包含八个同时采样德尔塔-西格玛ADC、八个PGA、相位延迟补偿块、低漂移内部参考电压、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。MCP3914 ADC完全可配置，具有以下功能：16/24位分辨率、32至4096的过采样率（OSR），增益从1x到32x，独立的关闭和重置，抖动和自动归零。MCP3914包括高级安全功能，以确保通信和配置设置的安全，例如串行数据输出和静态寄存器映射配置上的CRC-16校验和。它还包括一个通过8位安全密钥的寄存器映射锁，以阻止处理不需要的写入命令。MCP3914能够与各种电压和电流传感器接口，包括分流器、电流互感器、Rogowski线圈和霍尔效应传感器。

请联系jeff.keip@microchip.com如果你需要在本页找不到的东西

特性

• Eight Simultaneous Sampling 24-bit Delta-Sigma ADCs
• 94.5 dB SINAD, -107 dBc Total Harmonic Distortion (THD) (up to 35th Harmonic), 112 dBFS SFDR for Each Channel
• Enables 0.1% Typical Active Power Measurement Error over a 10,000:1 Dynamic Range
• Advanced Security Features: - 16-bit Cyclic Redundancy Check (CRC) checksum - 16-bit CRC checksum and interrupt alert for register map configuration - Register map lock with 8-bit secure key
• Programmable Data Rate up to 125 ksps
• Oversampling Ratio up to 4096
• Ultra-Low Power Shutdown Mode with < 10 µA
• -122 dB Crosstalk between Channels
• Differential Voltage Reference Input Pins
• High Gain Programmable-Gain Amplifier (PGA) on Each Channel (up to 32 V/V)
• Phase Delay Compensation with 1 µs Time Resolution
• Separate Data Ready Pin for Easy Synchronization
• Individual 24-bit Digital Offset and Gain Error Correction for Each Channel
• High-Speed 20 MHz Serial Peripheral Interface (SPI) with Mode 0,0 and 1,1 Compatibility
• Continuous Read/Write Modes for Minimum Communication Time
• Available in a 40-lead UQFN Package
• AEC-Q100 Grade 1

参数