16-Bit, Dual Voltage Output DIGITAL-TO-ANALOG CONVERTER DATA SHEET
The DAC7642 and DAC7643 are dual‑channel, 16‑bit digital‑to‑analog converters offering 15‑bit monotonic performance over a –40 °C to +85 °C temperature range. They accept 16‑bit parallel data, provide double‑buffered inputs, data read‑back, and can be reset to mid‑scale (DAC7642) or zero‑scale (DAC7643). Low power consumption (4 mW) and a compact LQFP‑32 package make them suitable for test equipment, DAC‑per‑pin programmers, data‑acquisition systems, and closed‑loop servo control.
The datasheet details absolute maximum ratings, supply options (single +5 V or dual ±5 V), output voltage ranges (0 to +2.5 V or –2.5 V to +2.5 V), settling time (10 µs to 0.003 % FSR), and pin assignments. Package drawing, ordering information and an important notice about warranty and availability are also included.
| Resolution | 16‑bit |
|---|---|
| Power consumption (low power) | 4 mW |
| Output voltage range | 0 to +2.5 V (unipolar) or –2.5 V to +2.5 V (bipolar) |
| Supply voltage options | Single +5 V or dual ±5 V |
| Package | LQFP‑32 |
| Operating temperature range | –40 °C to +85 °C |
| Settling time | 10 µs to 0.003 % FSR |
| Reset behavior | Mid‑scale for DAC7642, zero‑scale for DAC7643 |
The devices consume only 4 mW in low‑power mode.
They can be powered from a single +5 V supply or from dual ±5 V supplies.
The output can be 0 to +2.5 V in unipolar mode or –2.5 V to +2.5 V in bipolar mode.
The settling time is specified as 10 µs to reach 0.003 % of full‑scale.