ADI AD9268系列16位125 MSPS模数转换方案

ADI公司的AD9268系列是16位80 MSPS/105 MSPS/125 MSPS 双路1.8V模数转换器(ADC),支持高性能低成本小尺寸和多样化的应用. 70 MHz 和125 MSPS时的SNR=78.2 dBFS, SFDR = 88 dBc,功耗为750mW,.8V模拟电压, 1.8 V CMOS或LVDS输出电源,IF取样频率高达300MHz,小信号输入噪音为−153.6 dBm/Hz,主要用于通信,多功能无线电系统,3G接收器, GSM, EDGE, W-CDMA, LTE, CDMA2000, WiMAX, TD-SCDMA以及智能天线系统,通用软件无线电,超声波设备以及宽带数据应用.本文介绍AD9268主要特性, 功能方框图以及评估板连接框图,电路图以及材料清单(BOM).

AD9268:16-Bit,80 MSPS/105 MSPS/125 MSPS, 1.8 V Dual Analog-to-Digital Converter (ADC)

The AD9268 is a dual, 16-bit, 80 MSPS/105 MSPS/125 MSPS analog-to-digital converter (ADC). The AD9268 is designed to support communications applications where high performance, combined with low cost, small size, and versatility, is desired.

The dual ADC core features a multistage, differential pipelined architecture with integrated output error correction logic. Each ADC features wide bandwidth, differential sample-and-hold analog input amplifiers that support a variety of user-selectable input ranges. An integrated voltage reference eases design consid-erations. A duty cycle stabilizer is provided to compensate for variations in the ADC clock duty cycle, allowing the converters to maintain excellent performance.
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