The AD7228A is an LC2MOS octal 8-bit digital-to-analog converter (DAC) with eight DACs and amplifiers. It can operate in single or dual supply mode, and features microprocessor compatibility and a small package size.
The AD7228A is an octal 8‑bit voltage‑mode digital‑to‑analog converter that integrates eight DACs and output amplifiers in a single chip. It supports single‑supply operation at +5 V, +12 V or +15 V, as well as dual‑supply configurations for enhanced performance. The device features a common 8‑bit data bus, level‑triggered latch enables, and is compatible with most 8‑bit microprocessors.
The datasheet provides detailed functional block diagrams, electrical specifications, absolute maximum ratings, pin configurations for various packages, and example circuits for unipolar, bipolar, and self‑programmable reference applications. It also includes timing diagrams for microprocessor interfacing and guidance on using the DACs for coarse/fine adjustment and timing deskew.
| Resolution | 8 bits |
|---|---|
| Output Sink Capability (dual supply) | 400 µA at 25 °C |
In dual‑supply mode the output buffer can sink up to 400 µA at 25 °C.
A decoupling capacitor of 0.1 µF or greater is recommended on the VREF input for DC applications.