This datasheet details the Analog Devices AD9912, a 1 GSPS direct digital synthesizer featuring an integrated 14-bit DAC and flexible clock inputs.
The AD9912 is a direct digital synthesizer (DDS) that features an integrated 14-bit digital-to-analog converter (DAC). It utilizes a 48-bit frequency tuning word to synthesize frequencies with step sizes as small as 4 µHz. The device includes an on-chip low noise PLL REFCLK multiplier and supports differential HSTL or single-ended CMOS comparators for feedback inputs.
The AD9912 operates over an industrial temperature range from −40°C to +85°C. It is available in two 64-lead LFCSP packages and offers software-controlled power-down modes. Key applications include agile LO frequency synthesis, low jitter clock generation, test equipment, wireless base stations, and secure communications.
| Internal Clock Speed | 1 GSPS |
|---|---|
| Integrated DAC Resolution | 14-bit |
| Frequency Tuning Word (FTW) | 48-bit |
| Operating Temperature Range | -40°C to +85°C |
| Package Type | 64-lead LFCSP |
| DAC Full-Scale Output Current | 20 mA to 31.7 mA |
| Jitter (HSTL Driver) | 1.5 ps |
The device features a 48-bit frequency tuning word that can synthesize frequencies in step sizes no larger than 4 µHz.
The internal clock speed reaches up to 1 GSPS, with output directly available up to 400 MHz.
Yes, it is designed for use in wireless base stations and controllers as well as secure communications.