Quad 12-bit voltage output with R-2R architecture
The DAC7614UB: Four independent 12-bit DACs in a single 16-SOIC package, each with a buffered voltage output. The R-2R ladder architecture gives a 10 µs settling time to ±0.5 LSB — fast enough for closed-loop setpoint updates in industrial control loops or multi-channel data acquisition systems where the update rate is below 100 kHz per channel. INL and DNL are both specified at ±1 LSB maximum over the full operating temperature range. This guarantees monotonicity — no missing codes — which is the practical floor for any precision trim or servo application where the output must move monotonically with the digital code.
Split-rail supply and SPI interface
The analog section requires a bipolar ±5V supply, while the digital interface runs on a separate 5V rail. This split-rail architecture is the single most important integration constraint — the board must carry a negative rail generator or an existing bipolar supply, which adds cost and board area compared to single-supply DACs. The digital supply can share a 5V rail with the host microcontroller or FPGA. Data is written via a standard SPI interface. The reference is external, so the output full-scale range is set by the applied reference voltage — a precision reference like the REF50xx series is typical to keep the overall accuracy from being limited by the reference drift.
Industrial temperature range and package
It does not extend to the automotive under-hood band (125°C) — for that, a different grade would be needed. The tube shipping format means the part arrives in a plastic tube rather than tape-and-reel — pick-and-place lines need a tube feeder or a manual tube-to-tape conversion step.
Sourcing and compliance
ROHS3 compliant with no exemptions — the part passes directly into RoHS-regulated markets without additional documentation.