The AD9859 is a 10-bit direct digital synthesizer (DDS) featuring a 10-bit DAC operating at 400 MSPS with phase noise of –120 dBc/Hz at 1 kHz offset, excellent dynamic performance and support for 5 V input levels.
The AD9859 Direct Digital Synthesizer from Analog Devices provides a high‑speed 400 MSPS internal clock and a 10‑bit DAC, enabling agile frequency synthesis up to 200 MHz. It features serial I/O control, phase‑modulation capability, multichip synchronization, and operates over an extended industrial temperature range.
The device is supplied in a 48‑lead thin‑plastic QFP/EP package, requires a 1.8 V supply (±5%), and offers specifications such as 162 mW power consumption in single‑tone mode and a maximum clock rise/fall time of 2 ns. Typical applications include programmable clock generators, test and measurement equipment, and radio exciter designs.
| Maximum internal clock speed | 400 MSPS |
|---|---|
| Resolution | 10 bits |
| Supply voltage (AVDD, DVDD) | 1.8 V ±5% |
| Operating temperature range | -40 °C to +105 °C |
The AD9859 can operate at up to 400 MSPS internal clock speed.
It requires a 1.8 V supply (±5%) for AVDD and DVDD.
The device is rated for operation from –40 °C to +105 °C.
The AD9859 is supplied in a 48‑lead TQFP/EP package.