11-/14-Bit, 2.5 GSPS, RF Digital-to-Analog Converters Data Sheet AD9737A/AD9739A Rev. Describes the features of AD9737A/AD9739A, including direct RF synthesis, DC to 1.25 GHz bandwidth, 1.25 GHz to 3.0 GHz mixed mode, single/multicarrier IF or RF synthesis, dual port LVDS data interface, up to 1.25 GSPS operation, source synchronous DDR clocking, pin compatible with AD9739, programmable output current, low power consumption, etc.
The AD9737A and AD9739A are high‑performance 11‑bit and 14‑bit RF digital‑to‑analog converters capable of up to 2.5 GSPS conversion rates. They provide direct RF synthesis, dual‑port LVDS data interfaces, and programmable output currents, making them suitable for broadband communications, DOCSIS CMTS, military jammers, test equipment, radar, and avionics.
The datasheet includes detailed electrical specifications, pin configurations, LVDS and serial port parameters, absolute maximum ratings, and ordering information. It also outlines functional block diagrams, revision history, and thermal characteristics to aid system designers in integration and calibration.
| Resolution | 11 bits (AD9737A) / 14 bits (AD9739A) |
|---|---|
| Full‑Scale Output Current | 8.66 mA – 31.66 mA |
| Clock Rate | 1.6 GSPS – 2.5 GSPS |
| Power Dissipation (2.0 GSPS) | 0.770 W |
The device supports a maximum conversion rate of 2.5 GSPS (2500 MSPS).
The DAC operates from VDDA = VDD33 = 3.3 V and VDDC = VDD = 1.8 V.
The output current can be programmed from 8.7 mA up to 31.7 mA.
Typical applications include broadband communications systems, DOCSIS CMTS, military jammers, instrumentation, automatic test equipment, radar, and avionics.