The MCP4921/4922 are 2.7 – 5.5V, low-power, low DNL, 12-Bit Digital-to-Analog Con- verters (DACs) with optional 2x buffered output and SPI interface.
The MCP4921 and MCP4922 are low‑power 12‑bit digital‑to‑analog converters from Microchip. They feature a SPI interface supporting up to 20 MHz clock, rail‑to‑rail output, selectable unity or 2× gain, and operation over an extended temperature range of –40 °C to +125 °C. The devices are offered in PDIP, SOIC, MSOP and TSSOP packages.
The datasheet provides detailed electrical characteristics, including typical settling time of 4.5 µs, output swing accuracy better than 1 LSB, and input current specifications. It also covers timing diagrams, temperature specifications, and code‑protection information, along with worldwide sales and service contacts.
| Resolution | 12 bits |
|---|---|
| Output Swing Accuracy | ≥ 0.010 V (better than 1 LSB) |
| Gain Options | Unity (1×) or 2× |
| Maximum SPI Clock | 20 MHz |
| Operating Temperature Range | –40 °C to +125 °C |
Both devices provide a 12‑bit resolution.
The SPI interface supports up to 20 MHz clock frequency.