The document describes the features and characteristics of the AD5301/AD5311/AD5321 series 8-/10-/12-bit DACs, including buffered voltage output, micropower operation, 2-wire interface, data readback capability, etc.
The AD5301/AD5311/AD5321 family provides single‑chip buffered voltage‑output DACs ranging from 8‑ to 12‑bit resolution. They operate from a 2.5 V to 5.5 V supply, consume only 120 µA at 3 V in normal mode, and feature a rail‑to‑rail output buffer with a 0.7 V/µs slew rate. Communication is via a 2‑wire I²C‑compatible serial interface that supports clock rates up to 400 kHz and allows multiple devices on the same bus.
The datasheet includes detailed specifications such as resolution, accuracy, power‑down modes, pin configurations, timing diagrams, and absolute maximum ratings. Typical applications include portable battery‑powered instruments, programmable voltage sources, and digital gain/offset adjustment circuits.
| Supply Voltage Range | 2.5 V to 5.5 V |
|---|---|
| Resolution (bits) | 8‑10‑12 (AD5301/AD5311/AD5321) |
| Power‑down Current | 50 nA @ 3 V |
| Maximum I²C Clock Frequency | 400 kHz |
| Short‑Circuit Output Current | 50 mA (5 V) |
The devices operate from a 2.5 V to 5.5 V supply.
The AD5311 provides 10‑bit resolution.
The serial interface supports clock rates up to 400 kHz.
In power‑down mode the current drops to 50 nA at 3 V.