The AD9739A is a 14-bit, 2.5 GSPS, RF digital-to-analog converter with direct RF synthesis, DC to 1.25 GHz bandwidth, single/multicarrier IF or RF synthesis, dual-port LVDS data interface, programmable output current, and low power.
The AD9739A is a 14‑bit, 2.5 GSPS RF digital‑to‑analog converter capable of synthesizing wideband signals from DC up to 3 GHz. It is pin‑compatible with the AD9739, but does not support synchronization and operates between 1.6 GSPS and 2.5 GSPS. The device includes on‑chip controllers, a dual‑port LVDS interface, and a programmable output current range.
The document provides functional block diagrams, detailed pin‑out tables, electrical specifications, absolute maximum ratings, thermal resistance data, and recommended start‑up sequences. It also contains performance charts for various DOCSIS carrier configurations and guidance for SPI register programming.
| Resolution | 14 Bits |
|---|---|
| Maximum DAC Clock Rate | 2.5 GHz |
| Output Current Range | 8.66 mA to 31.66 mA |
| Power Dissipation (2.5 GSPS) | 0.960 W |
| Analog Supply Voltage (VDDA) | 3.3 V ±6% |
| Digital Supply Voltage (VDD) | 1.8 V ±6% |
The device supports a DAC clock rate up to 2.5 GHz (2.5 GSPS).
The programmable differential output current ranges from 8.66 mA to 31.66 mA.
Analog supply (VDDA) is 3.3 V ±6% and digital supply (VDD) is 1.8 V ±6%.
Power dissipation is 0.770 W at 2.0 GSPS.