The AD7249 DACPORT is an integrated device that includes a pair of 12-bit voltage output DACs, output amplifiers, and a Zener voltage reference. It features high accuracy, no external trimming required, and compact size.
The AD7249 DACPORT contains two 12‑bit voltage‑output DACs with on‑chip reference and output amplifiers. It supports single‑supply (0 V‑5 V or 0 V‑10 V) and dual‑supply (±5 V) operation, selectable via internal gain resistors. The serial interface requires only three wires, allowing easy connection to DSPs and microcontrollers, and supports data rates up to 2 MHz for a 125 kHz DAC update.
The device is offered in 16‑lead DIP and SOIC packages, draws low power (≈15 mA supply current), and includes ESD protection. Detailed specifications cover resolution, accuracy, timing, absolute maximum ratings, pin functions, and reference circuitry.
| Output Voltage Range (single supply) | 0 V to +5 V or 0 V to +10 V |
|---|---|
| DAC Update Rate | 125 kHz |
| Power Supply Range (VDD) | +10.8 V to +16.5 V |
| Package Options | 16‑lead DIP or 16‑lead SOIC |
The AD7249 can update its DAC outputs at up to 125 kHz.
The device is available in 16‑lead DIP and 16‑lead SOIC packages, each with 16 pins.
The on‑chip reference is a 5 V ±50 mV Zener reference provided at the REFOUT pin.