GENERAL DESCRIPTION
The AD7854/AD7854L is a high speed, low power, 12-bit ADC that operates from a single 3 V or 5 V power supply, the AD7854 being optimized for speed and the AD7854L for low power. The ADC powers up with a set of default conditions at which time it can be operated as a read-only ADC. The ADC contains self-calibration and system calibration options to ensure accurate operation over time and temperature and has a number of power-down options for low power applications.

FEATURES
    Specified for VDD of 3 V to 5.5 V
    Read-Only Operation
    AD7854–200 kSPS; AD7854L–100 kSPS
    System and Self-Calibration
    Low Power
        Normal Operation
            AD7854: 15 mW (VDD = 3 V)
            AD7854L: 5.5 mW (VDD = 3 V)
        Automatic Power-Down After Conversion (25 μW)
            AD7854: 1.3 mW 10 kSPS
            AD7854L: 650 μW 10 kSPS
    Flexible Parallel Interface
        12-Bit Parallel/8-Bit Parallel (AD7854)
    28-Lead DIP, SOIC and SSOP Packages (AD7854)

APPLICATIONS
    Battery-Powered Systems (Personal Digital Assistants, Medical Instruments, Mobile Communications)
    Pen Computers
    Instrumentation and Control Systems
    High Speed Modems