高性能低功耗模数转换器ADS4249的介绍及其应用

现代信息处理应用中,对模数转换器的速度、精度、功耗和动态性能等关键性能指标不断提出更高的要求。针对模数转换的实际应用,提出并设计了一种基于TI公司生产的双通道14位250MSPS低功耗A/D转换器ADS4249的RGB视频编码器电路设计。这款A/D转换器的技术创新点在于其完美的实现高动态性能的同时又能拥有1.8 V超低功耗。这一特性使得ADS4249非常适合多载波,宽带通信的信号处理应用。

Introduction and application of a low power high performance ADC ADS4249

A/D converter used in information processing applications, is required with the higher performance such as the speed, accuracy, power and the dynamic performance. In the light of practical application, the RGB video encoder circuit is desighed based on ADS424,a member of the ADS42xx ultralow-power family of dual-channel, 12-bit/14-bit analog-to-digital converters （ADCs）. Innovative design techniques are used to achieve high dynamic performance, while consuming extremely low power with a 1.8 V supply. This topology makes the ADS4249 well-suited for multi-carrier, wide-bandwidth communications applications.