AD9912 PDF Datasheet


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Description

This is 1 GSPS Direct Digital Synthesizer. FEATURES 1 GSPS internal clock speed (up to 400 MH- output directly) Integrated 1 GSPS 14-bit DAC 48-bit frequency tuning word with 4 μH- resolution Differential HSTL comparator Flexible system clock input accepts either crystal or external reference clock On-chip low noise PLL REFCLK multiplier 2 SpurKiller channels Low jitter clock doubler for frequencies up to 750 MH- Single-ended CMOS comparator; frequencies of <150 MH- Programmable output divider for CMOS output Serial I, O control Excellent dynamic performance Software controlled power-down Available in two 64-lead LFCSP packages Residual phase noise @ 250 MHz 10 H- offset: 113 dBc, H- 1 kH- offset: 133 dBc, H- 100 kH- offset: 153 dBc, H- 40 MH- offset: 161 dBc, Hz 1 GSPS Direct Digital Synthesizer with 14-Bit DAC AD9912 APPLICATIONS Agile LO frequency synthesis Low jitter, fine tune clock generation Test and measurement equipment Wireless base stations and controllers Secure communications Fast frequency hopping GENERAL.