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rs485通讯 单片机为从机 PC机为主机 单片机模拟24路285

LTC1864 The LTC 1864/LTC1865 are 16-bit A/D converters that are offered in MSOP and SO-8 packages and operate on a single 5V supply. At 250ksps, the supply current is only 850µA. The supply current drops at lower speeds because the LTC1864/LTC1865 automatically power down between conversions.