摘要
A/D转换器是电力系统微机保护电路、RTU模拟量遥测信息采集电路中的关键部件。并行比较型、逐次逼近型、双积分型A/D转换方案的转换电路不同 ,它们的主要技术指标、适用场合也有所差别。目前 ,在电力系统微机保护电路、模拟量遥测信息采集电路中采用的A/D转换芯片主要是AD5 74。
A/D converter is the key part of the circuit of computer protection in electric power system and of RTU analog telemetering. Simultaneous converter, successive approximation converter, double integral converter are three different types of A/D converters. Their converting methods are different from each other. They are also different in main technique index and in suitable fields. At present, AD574 is a main A/D converting chip used in the circuits.
