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求推荐一款DAC,12、14、16位,电压输出型,用来进行产生50KHZ正弦信号,后接功率放大器

Other Parts Discussed in Thread: DAC8830

最近产品选型,要DSP+DAC+功率放大器的架构,用来做超声波调制解调器的发射部分,要能产生50KHZ的正弦波,最好是SPI接口,请问有没有合适的DAC?

另外,选DAC主要看哪个参数,是Settling Time 还是Sample / Update Rate (MSPS)?这两个参数有的没有都不知道怎么选了。

输出类型有Buffered Voltage  Unbuffered Voltage  Voltage这有什么区别?