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说明

Microchip Technology股份有限公司的MCP355X设备为2.7V至5.5V低功耗、22位delta-sigma A/D转换器。该设备的输出噪声低至2.5µVRMS，未经调整的总误差小于10 ppm。该系列显示出小于6 ppm的积分非线性（INL）误差、3µV偏移误差和2 ppm的满刻度误差。MCP355X设备为执行压力、温度和湿度等传感器测量的应用提供了高精度和低噪声性能。通过内部振荡器和高过采样率，高精度应用需要最小的外部组件。全差分模拟输入使其与各种传感器和测量应用兼容。MCP355X器件的工作温度为-40°C至+125°C，可采用节省空间的8引脚MSOP和SOIC封装。

特性

• 22-bit ADC with automatic internal offset and gain calibration
• Low output noise 2.5 µVrms
• 3 µV offset error
• 2 ppm typical full-scale error
• 6 ppm maximum INL error
• Total unadjusted error less than 10 ppm
• Sample rate 55 sps
• No digital filter settling time, single command conversions through 3-wire SPI™ interface
• 120 µA typical (VDD = 2.7V)
• 140 µA typical (VDD = 5.0V)
• 8-pin MSOP and SOIC packages
• Differential inputs with VSS to VDD common mode range
• 2.7V to 5.5V single supply operation
• Extended temperature range: -40°C to +125°C
• Recommended for Automotive Designs (Q100)

参数