Key facts
- Brand
- Analog Devices
- Model
- AD7228A
- Category
- Other Electronics
- Documents
- 2
- Languages
- EN
- Last added
- 2012-04-11
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Analog Devices AD7228A Octal 8‑Bit DAC Datasheet
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.
Analog Devices AD7228A specifications
| Resolution | 8 bits |
|---|---|
| Total Unadjusted Error | 42 LSB max |
| Differential Nonlinearity | Guaranteed monotonic |
| Supply Voltage Options | Single +5 V, +12 V, +15 V or dual supplies |
| Maximum Ipp (positive supply current) | 22 mA |
| Maximum Iss (negative supply current) | 20 mA |
| Output Slew Rate | 2 V/µs min |
| Output Settling Time (full‑scale change) | 5 ps max |
| Maximum Sink Capability (single supply) | 400 µA at 25 °C |
Source: Analog Devices AD7228A Datasheet
All Analog Devices AD7228A documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the maximum output sink current per channel?
In dual‑supply mode the output buffer can sink up to 400 µA at 25 °C.
What is the recommended decoupling capacitor on the reference input?
A decoupling capacitor of 0.1 µF or greater is recommended on the VREF input for DC applications.
What supply voltages can the AD7228A operate from?
It can operate with a single +5 V, +12 V, or +15 V supply, or with dual supplies.
How many DAC channels does the AD7228A contain?
The AD7228A contains eight independent 8‑bit DAC channels.