Complete 12-Bit Successive Approximation Analog-to-Digital Converters With Three-State Output and 8 us Conversion Features: Complete Monolithic 12-Bit A/D Converters with Reference, Clock, and Three-State Output Buffers Industry Standard Pinout High Speed Upgrades for AD574A 15 µs (Max) Conversion Time (AD674B) 8 µs (Max) Conversion Time (AD774B) ±5 V, ±10 V, 0 V–10 V, 0 V–20 V Input Ranges See datasheet for additional features