[原创] ADI AD9680双路14位1GSPS模数转换方案

ADI公司的AD9680是双路14位1GSPS模数转换器(ADC),IF取样频率高达2GHz, JESD204B (Subclass 1)码串行数字输出,1GSPS时每路总功耗1.65W,340MHz时的SFDR=dBFS,1GHz时为80dBFS,1GSPS时的噪音密度=-154dBFS/Hz, DNL = ±0.5 LSB INL = ±2.5 LSB, 1.25 V, 2.5 V和3.3 V工作电压,主要用在通信,多频带多模式数字接收器如3G/4G, TD-SCDMA, W-CDMA, GSM, LTE,通用软件无线电,超宽带卫星接收器,仪表,雷达,HFC数字反向通路接收器等.本文介绍了AD9680产品亮点和主要特性,框图, 评估板AD9680-1000EBZ主要特性,测试连接图,电路图,材料清单和PCB设计文件.

The AD9680 is a dual, 14-bit, 1 GSPS analog-to-digital converter (ADC). The device has an on-chip buffer and sample-and-hold circuit designed for low power, small size, and ease of use. This device is designed for sampling wide bandwidth analog signals of up to 2 GHz. The AD9680 is optimized for wide input bandwidth, high sampling rate, excellent linearity, and low power in a small package.

The dual ADC cores feature a multistage, differential pipelined architecture with integrated output error correction logic. Each ADC features wide bandwidth inputs supporting a variety of user-selectable input ranges. An integrated voltage reference eases design considerations.
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