This document is about the technical information of AD9854, introducing its functions and features. AD9854 is a CMOS 300 MHz Quadrature Complete-DDS (Direct Digital Synthesizer), with an internal clock rate of 300 MHz. It includes digital multipliers, a system clock, control DAC, data DAC, phase/offset modulation, inverse sinc filter, phase accumulator, frequency accumulator, and other functional blocks. The product has high performance and high precision.
The AD9854 is a highly integrated CMOS 300 MHz quadrature DDS chip featuring dual 12‑bit DACs, programmable frequency, phase and amplitude control, and a variety of clocking options. It is intended for use as an agile local oscillator in communications, radar, test equipment, and other RF applications.
The document includes detailed specifications, pin function tables, programming interface information, ordering guide with package options, and mechanical drawings of the 80‑lead LQFP package. It also presents performance graphs such as wideband and narrowband SFDR across the operating frequency range.
| Internal Clock Frequency Range | 300 MHz (Full VI) |
|---|---|
| Output Update Speed | 300 MSPS |
| DAC Resolution | 12 bits |
| Supply Current (VS) Typical | 1050 mA |
| Operating Temperature Range | –40 °C to +85 °C |
| Package Options | 80‑Lead LQFP (SQ‑80) and 80‑Lead LQFP (ST‑80) |
The AD9854 can operate up to 300 MHz clock frequency.
The device operates from a single 3.3 V supply.
Both I and Q DACs have 12‑bit resolution.