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e2v新出了12bit, 4.5Gsps的DAC EV12DS400A,
12-bit DAC (EV12DS400A) provides high levels of spectral purity from 0 to 7GHz
This ground breaking DAC provides an analog bandwidth extending beyond 7GHz facilitating multi-band, direct digital synthesis in the L, C and S-bands. Furthermore 30ps rise/fall times also makes this part ideal in time domain applications. A flexible 4:1 or 2:1 input multiplexer enables sampling rates up to 4.5 GSPS.
Four output coding modes (NRZ, RTZ, NRTZ and RF) offer design flexibility and helps simplify frequency planning. This unique part can deliver spectral power up to and beyond the fourth Nyquist zone (see charts below). The DAC achieves > 50dB NPR and high spectral purity with an SFDR of 65dBc@2240MHz.
The EV12DS400 offers features to simplify design-in for many sophisticated RF systems.
12bit DAC(EV12DS400A)提供從0到7GHz的高等級(jí)的純凈的頻譜。
這個(gè)開創(chuàng)性的DAC提供超過7GHz的模擬帶寬，方便用戶在L, C和S波段跨多個(gè)頻段進(jìn)行直接數(shù)字合成。另外，30ps的上升/下降時(shí)間也使得這個(gè)器件非常適合用在時(shí)域的應(yīng)用上。靈活的4:1或2:1的輸入多路復(fù)用器使其采樣率高達(dá)4.5Gsps。
4種輸出編碼模式(NRZ, RTZ, NRTZ和RF)為用戶提供設(shè)計(jì)的靈活性，幫助簡(jiǎn)化頻率方案設(shè)計(jì)。這個(gè)獨(dú)一無二的器件可以傳遞頻譜能量超過第4奈奎斯特區(qū)間。這個(gè)DAC能達(dá)到超過50dB的NPR，和在2240MHz時(shí)65dBc SFDR的高純凈頻譜。
EV12DS400的特性可以簡(jiǎn)化眾多復(fù)雜的RF系統(tǒng)的設(shè)計(jì)。
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