The AD7302 is a dual, 8-bit voltage out DAC that operates from a single +2.7 V to +5.5 V supply. Its on-chip precision output buffers allow the DAC outputs to swing rail to rail. The AD7302 has features such as parallel microprocessor interface, low power operation, internal and external reference capability, and DAC power-down function.
The AD7302 is a dual 8‑bit voltage‑output digital‑to‑analog converter that operates from a single +2.7 V to +5.5 V supply. It features two DACs in one package, internal and external reference capability, rail‑to‑rail output buffers, and a parallel microprocessor‑compatible interface. The device is optimized for portable, battery‑powered equipment and offers low power consumption (less than 10 mW at 3.3 V, down to 1 µA in power‑down mode).
The datasheet provides detailed specifications such as 8‑bit resolution, ±1 LSB differential non‑linearity, typical 1.2 µs settling time, 7.5 V/µs slew rate, and a 14 mA short‑circuit current. Pin functions, timing diagrams, ordering information, and application examples (e.g., bipolar operation and multi‑DAC decoding) are also included.
| Resolution | 8 bits |
|---|---|
| Supply Voltage Range | +2.7 V to +5.5 V |
| Output Voltage Range | 0 V to VDD (rail‑to‑rail) |
| Typical Settling Time | 1.2 µs |
| Slew Rate | 7.5 V/µs |
| Short‑Circuit Output Current | 14 mA |
| Input Impedance | 10 MΩ |
The AD7302 operates from a single supply of +2.7 V to +5.5 V.
Typical settling time is about 1.2 µs for a full‑scale step.
Yes, an external reference can be applied to the REFIN pin (1 V to VDD/2).