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本文提出了一款车规级4通道ΔΣ ADC，用于汽车娱乐系统的低成本可重构音频接口。该ADC支持多种音频采样率，在性能、面积、功耗和外部元件数量上具有竞争力，解决了多标准音频接口需求增加带来的成本压力问题。
multistandard radio, parallel-channel radio reception [1], noise cancellation, HD audio and more audio interfacing possibilities. This asks for more signal processing, and therefore, a move to more expensive deep-submicron technologies. This puts pressure on the area that can be spent on the increasing number of audio interfaces to enable competitive application costs. In this paper an automotivegrade, 4-channel ∆Σ ADC is presented that has a large feature set, and is very competitive in performance, area, power and external component count. It supports 44.1/48/96/192kHz audio, in rail-to-rail, single-ended, pseudo differential (floating source) and differential configurations. The ADC can be reconfigured as a rail-to-rail low-impedance DAC line output, to directly drive the speaker drivers
Robert van Veldhoven, Marco Lammers, Leon van der dussen, Khalid Mabtoul
NXP Semiconductors, Eindhoven, The Netherlands A trend in today’s car entertainment systems is the increase of features like