分享资料个
The AD7760 is a high performance， 24-bit Σ-Δ analog-to-digital converter （ADC）。 It combines wide input bandwidth and high speed with the benefits of Σ-Δ conversion to achieve a performance of 100 dB SNR at 2.5 MSPS， making it ideal for high speed data acquisition. Wide dynamic range combined with significantly reduced antialiasing requirements simplify the design process. An integrated buffer to drive the reference， a differential amplifier for signal buffering and level shifting， an overrange flag， internal gain and offset registers， and a low-pass digital FIR filter make the AD7760 a compact， highly integrated data acquisition device requiring minimal peripheral component selection. In addition， the device offers programmable decimation rates， and the digital FIR filter can be adjusted if the default characteristics are not appropriate for the application. The AD7760 is ideal for applications demanding high SNR without a complex front-end signal processing design. The differential input is sampled at up to 40 MSPS by an analog modulator. The modulator output is processed by a series of lowpass filters， with the final filter having default or user-programmable coefficients. The sample rate， filter corner frequencies， and output word rate are set by a combination of the external clock frequency and the configuration registers of the AD7760. The reference voltage supplied to the AD7760 determines the analog input range. With a 4 V reference， the analog input range is ±3.2 V differential biased around a common mode of 2 V. This common-mode biasing can be achieved using the on-chip differential amplifier， further reducing the external signal conditioning requirements. The AD7760 is available in an exposed paddle， 64-lead TQFP and is specified over the industrial temperature range from −40°C to +85°C.
声明：本文内容及配图由入驻作者撰写或者入驻合作网站授权转载。文章观点仅代表作者本人，不代表电子发烧友网立场。文章及其配图仅供工程师学习之用，如有内容侵权或者其他违规问题，请联系本站处理。 举报投诉
全部0条评论
快来发表一下你的评论吧 !
