NS SolarMagic SM73201 DC Arc参考设计方案
NS公司的M73201是16位50-250kSPS取样差分输入微功耗的ADC,在温度−40℃到+85℃的范围内信号精度优于± 0.003%,共模信号抑制比(CMRR)为85dB,主要用于太阳能电池PV DC Arc检测系统,传感器接口,I/O模块,太阳能数据采集,马达控制和仪表和控制系统.本文介绍了SM73201主要特性, 方框图和典型应用电路图,以及低功耗低成本数据采集系统框图,SolarMagic SM73201 DC Arc 检测评估板主要特性,框图,模拟前端以及材料清单(BOM).
SM73201:16-Bit, 50 to 250 kSPS, Differential Input, MicroPower ADC
The SM73201 is a 16-bit successive-approximation register (SAR) Analog-to-Digital converter (ADC) with a maximum sampling rate of 250 kSPS. The SM73201 has a minimum signal span accuracy of ± 0.003% over the temperate range of −40℃ to +85℃. The converter features a differential analog input with an excellent common-mode signal rejection ratio of 85 dB, making the SM73201 suitable for noisy environments.
The SM73201 operates with a single analog supply (VA) and a separate digital input/output (VIO) supply. VA can range from +4.5V to +5.5V and VIO can range from +2.7V to +5.5V. This allows a system designer to maximize performance and minimize power consumption by operating the analog portion of the ADC at a VA of +5V while interfacing with a +3.3V controller.
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