8通道12位串行A/D转换器。其主要性能特征包括：A/D转换时间较快(9.5μs)（100k） 功耗较低(最大50 mW，体眠状态下75μW) 信噪比较高(大于70 dB) 总谐波失真小(不大于-78 dB) 内置跟踪/保持放大器，片上参考电压 具有高速、灵活的串行接口等。-8-Channel 12-Bit Serial A/D converter. Its main performance characteristics include: A/D conversion time fast (9.5μs) (100k)-power low (maximum 50 mW, body sleep state 75μW)　signal to noise ratio is high (greater than 70 dB)　the total harmonic wave distortion is small (less than-78 dB)　built-in track/hold amplifier on-chip reference voltage　with a high-speed, flexible serial interfaces.