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GENERAL DESCRIPTION

The AD7859/AD7859L are high speed, low power, 8-channel, 12-bit ADCs which operate from a single 3 V or 5 V power supply, the AD7859 being optimized for speed and the AD7859L for low power. The ADC contains self-calibration and system calibration options to ensure accurate operation over time and temperature and have a number of power-down options for low power applications.

FEATURES

Specified for VDD of 3 V to 5.5 V

AD7859–200 kSPS; AD7859L–100 kSPS

System and Self-Calibration

Low Power

Normal Operation

AD7859: 15 mW (VDD = 3 V)

AD7859L: 5.5 mW (VDD = 3 V)

Using Automatic Power-Down After Conversion (25 μW)

AD7859: 1.3 mW (VDD = 3 V 10 kSPS)

AD7859L: 650 μW (VDD = 3 V 10 kSPS)

Flexible Parallel Interface:

16-Bit Parallel/8-Bit Parallel

44-Pin PQFP and PLCC Packages

APPLICATIONS

Battery-Powered Systems (Personal Digital Assistants,

Medical Instruments, Mobile Communications)

Pen Computers

Instrumentation and Control Systems

High Speed Modems