AD674B/AD774B is a complete monolithic 12-bit A/D converter with reference, clock, and three-state output buffers. It has an industry standard pinout and is a high speed upgrade for the AD574A. AD674B/AD774B features 8 μs (Max) conversion time (AD774B) and 15 μs (Max) conversion time (AD674B), -5 V, -10 V, 0 V–10 V, and 0 V–20 V input ranges. It complies with commercial, industrial, and military temperature range grades and offers MIL-STD-883-compliant versions.
The AD674B and AD774B are complete 12‑bit monolithic A/D converters that include an internal voltage reference, clock, and three‑state output buffers. They are pin‑compatible with the AD574A family but offer faster conversion times and lower power consumption. The devices support both unipolar (0 V to +10 V) and bipolar (‑5 V to +5 V) input ranges and operate from a variety of supply voltages.
The document provides full specifications, digital interface details, timing diagrams, absolute maximum ratings, ordering information, and pin configuration. It also includes definitions of key specifications such as linearity error, full‑scale calibration error, and power‑supply rejection, as well as recommended layout and ESD handling guidelines.
| Linearity Error @ 25°C | ±1 LSB (J, K, A, B grades) / ±0.5 LSB (T grade) |
|---|---|
| Input Voltage Range (Unipolar) | 0 V to +10 V |
They support a 0 V to +10 V unipolar range and a ±5 V bipolar range.