一种16位高速数模转换器(DAC)的设计与实现
Design and Implementation of a 16-Bit High Speed Digital to Analog Converter (DAC)
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摘要: 基于Mixed-Signal CMOS工艺, 设计了一种采用分段式电流舵结构的高速高精度DAC.电路设计中同时在该DAC的内部电路中采用了一种新的电流校准技术, 既保证了DAC电路的高精度, 又减小了梯度误差的影响.电路流片后的实际测试结果表明, 该16位DAC在400MSPS转换速率下仍具有良好的性能.Abstract: A high speed and high resolution DAC with segmented current-steering is presented here by using mixed-signal CMOS technology.Meanwhile, with a novel current calibration technique, it can guarantee the high resolution and reduce the effect of gradient mismatch.The tape-out circuit test results show that the 16-bit DAC achieve favorable performance at conversion rates up to 400MSPS.
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