优势和特点

  1 GSPS internal clock speed (up to 400 MHz output directly)

  Integrated 1 GSPS 14-bit DAC

  48-bit frequency tuning word with 4 μHz 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

  See data sheet for additional information.

产品详情

The AD9912 is a direct digital synthesizer (DDS) that features an integrated 14-bit digital-to-analog converter (DAC). The AD9912 features a 48-bit frequency tuning word (FTW) that can synthesize frequencies in step sizes no larger than 4 μHz. Absolute frequency accuracy can be achieved by adjusting the DAC system clock.

The AD9912 also features an integrated system clock phase-locked loop (PLL) that allows for system clock inputs as low as 25 MHz.

The AD9912 operates over an industrial temperature range, spanning −40°C to +85°C.

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