AD9850 is a highly integrated device that uses advanced DDS technology coupled with an internal high speed, high performance, D/A converter and comparator, to form a com- plete digitally programmable frequency synthesizer and clock generator function. When referenced to an accurate clock source, the AD9850 generates a spectrally pure, frequency/ phase-programmable, analog output sine wave. This sine wave can be used directly as a frequency source or converted to a square wave for agile-clock generator applications. The AD9850’s innovative high speed DDS core provides a 32-bit frequency tuning word, which results in an output tuning resolution of 125 MHz.
The AD9850 is a highly integrated DDS device that combines a 10‑bit high‑speed DAC and a high‑speed comparator to provide a complete digitally programmable frequency synthesizer and clock generator. It supports parallel‑byte or serial loading of a 32‑bit frequency tuning word and offers phase‑modulation capability, operating from a single +3.3 V or +5 V supply.
The datasheet lists detailed electrical specifications, pin functions, typical performance graphs, absolute‑maximum ratings, and mechanical dimensions for the 28‑lead SSOP package. It also includes an ordering guide and application notes for clock‑generation and agile‑local‑oscillator uses.
| Power Consumption at 125 MHz (+5 V) | 380 mW |
|---|---|
| Spurious‑Free Dynamic Range (SFDR) | > 50 dB @ 40 MHz |
| Package Type | 28‑Lead SSOP |
It consumes 380 mW at 125 MHz with a +5 V supply.
It is supplied in a 28‑lead shrink small‑outline (SSOP) package.