AD9851 is a 180MHz DDS/DAC synthesizer from Analog Devices
The AD9851 is a highly integrated CMOS device that combines direct‑digital‑synthesis (DDS) technology with an on‑chip 10‑bit DAC and a high‑speed comparator. It offers a 180 MHz system clock, selectable 6× REFCLK multiplier, 5‑bit phase modulation, and low‑power operation from a single +2.7 V to +5.25 V supply.
The datasheet provides detailed specifications, pin descriptions, timing characteristics, absolute maximum ratings, and ordering information for the 28‑lead SSOP package. It also outlines typical applications such as agile sine‑wave synthesis, clock recovery, and RF modulation.
| Comparator Jitter (typical) | <80 ps p‑p @ 20 MHz |
|---|---|
| Supply Voltage Range | +2.7 V to +5.25 V (single supply) |
The AD9851 is available in a 28‑lead SSOP surface‑mount package.