PRODUCT DESCRIPTION
The AD574A is a complete 12-bit successive-approximation analog-to-digital converter with 3-state output buffer circuitry for direct interface to an 8- or 16-bit microprocessor bus. A high precision voltage reference and clock are included on-chip, and the circuit guarantees full-rated performance without external circuitry or clock signals.

FEATURES
    Complete 12-Bit A/D Converter with Reference and Clock
    8- and 16-Bit Microprocessor Bus Interface
    Guaranteed Linearity Over Temperature
        0°C to +70°C – AD574AJ, K, L
        –55°C to +125°C – AD574AS, T, U
    No Missing Codes Over Temperature
    35 μs Maximum Conversion Time
    Buried Zener Reference for Long-Term Stability and Low Gain T.C. 10 ppm/°C max AD574AL 12.5 ppm/°C max AD574AU
    Ceramic DIP, Plastic DIP or PLCC Package
    Available in Higher Speed, Pinout-Compatible Versions (15 μs AD674B, 80 μs AD774B; 10 μs (with SHA) AD1674)
    Available in Versions Compliant with MIL-STD-883 and JAN QPL