This document introduces the LTC2631 series of 12-bit, 10-bit and 8-bit voltage output DACs, including their features, characteristics, and application scenarios.
The LTC2631 family provides single‑channel voltage‑output DACs available in 12‑, 10‑ and 8‑bit resolutions. Each device includes an integrated precision reference with 10 ppm/°C temperature coefficient and a rail‑to‑rail output buffer that is guaranteed monotonic. The parts support both internal and external reference modes and feature a 2‑wire I2C‑compatible serial interface.
The document lists electrical characteristics, timing parameters, package dimensions, ordering information and typical application circuits. It also includes a product selection guide, pin configuration diagrams, and a comparison of the different temperature‑grade options (C, I, H).
| Supply Voltage Range | 2.7 V to 5.5 V |
|---|---|
| Full‑Scale Output Options | 2.5 V (L) or 4.096 V (H) |
| Resolution | 12‑bit, 10‑bit, 8‑bit |
| I2C Interface Speed | Up to 400 kHz |
| Power‑Down Current (C‑Grade) | 1.8 µA maximum |
The LTC2631 supports an I2C clock rate up to 400 kHz.
The device provides nine selectable I2C addresses.
Typical supply current is about 180 µA at a 3 V supply.