This document describes the features and characteristics of the 16-bit, 400 MSPS Digital-to-Analog Converter AD9726 Rev. B, including dynamic performance, precision calibrated linearity, LVDS inputs, and differential current outputs.
The AD9726 is a 16‑bit DAC capable of conversion rates up to 400 MSPS. It uses low‑voltage differential signaling (LVDS) inputs with built‑in 100 Ω terminations and provides both single‑ended and differential current outputs. An internal precision reference and programmable full‑scale output current (20 mA) are included, and the device operates from 2.5 V and 3.3 V supplies.
Key features include high dynamic performance (SFDR ≥ 78 dBc at 20 MHz, THD ≤ ‑95 dB at 1 MHz), wide temperature range (‑40 °C to +85 °C), and extensive timing and synchronization logic for SDR and DDR operation. The AD9726 is suited for instrumentation, test equipment, waveform synthesis, and communications systems.
| Resolution | 16‑bit |
|---|---|
| Maximum Update Rate | 400 MSPS |
| Full‑Scale Output Current | 20 mA |
| Supply Voltages | 2.5 V and 3.3 V |
| Operating Temperature Range | ‑40 °C to +85 °C |
| Spurious‑Free Dynamic Range (SFDR) | ≥ 78 dBc at 20 MHz |
| Total Harmonic Distortion (THD) | ≤ ‑95 dB at 1 MHz |
| Input Type | LVDS with internal 100 Ω termination |
| Power Dissipation | 575 mW (typical) |
The AD9726 can operate at up to 400 MSPS conversion rate.
It runs from 2.5 V and 3.3 V supplies.
The device provides a programmable full‑scale output current of 20 mA.
It is rated for operation from –40 °C to +85 °C.