The AD7549 is a dual 12‑bit DAC offered in 20‑pin DIP and surface‑mount packages. It provides two buffered DAC channels with matched performance, suitable for programmable filters, audio systems, and test equipment. The device uses a linear CMOS process and accepts TTL, 74HC, or 5 V CMOS logic levels.
The datasheet includes functional block diagrams, detailed specifications, pin configurations, operation modes (unipolar and bipolar), application hints, and interface circuits for common microprocessors such as the 8085A, 8048, and MC6809.
| Resolution | 12 bits |
|---|---|
| Relative Accuracy | +1 LSB max |
| Differential Nonlinearity | +1 LSB max |
| Full Scale Error | +6 LSB max |
| Input Resistance (per channel) | 7 kΩ min |
| Power Supply Current (Ipp) | 5 mA max |
The AD7549 provides a 12‑bit resolution.
The device draws up to 5 mA from the supply.
Commercial versions operate from –40 °C to +85 °C.