Euvis DS856
The DS856 is a high-speed Direct Digital Synthesizer (DDS) with a frequency tuning resolution of 32 bits, ROM phase resolution of 13-bit and a DAC amplitude resolution of 11 bits. The initial phase can be reset to zero degrees to start with. The chip has a pair of complementary outputs with 50-Ω back terminations.DESCRIPTION
Sine waves in the 1st Nyquist band can be generated up to near 1.6 GHz (at a 3.2-GHz clock rate). The frequency of output waveforms can be controlled by thirty-two frequency control bits, Vi[0:31]. The DS856 accepts either differential clock inputs or a single-ended clock input and features 50-Ω on-chip back terminations with user-defined threshold. The frequency resolution bits accept LVTTL or CMOS input levels. Only a single – 5V power supply is required. KEYFEATURES
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● 32-bit frequency tuning word 13-bit ROM phase address resolution On chip DAC with 11 bit linearity Clock rate up to 3.2 GHz Sine wave generation up to 1.6 GHz Complementary analog waveform outputs with 50 Ω back terminations Carry bit RF output from phase accumulator for synchronization triggering of testing scope or system applications Worst SFDR > 45 dBc (DC to 1.6-GHz Bandwidth) at a 3.2 GHz clock rate LVTTL/CMOS digital pattern control input Reset (RST) pin to initiate phase...