Product Features

TDC-GP21 Ultrasonic Flow Converter

Time-to-digital converter with integrated analog front-end TDC-GP21 is a 2-channel TDC with additional analog elements like extended fire-pulse generator, zero-cross detection and analog switches for simplifying the use in ultrasonic flow meter applications. An optimized power managements of the various units brings down the operating current to a few µA at 2Hz measuring rate.

Features

• 2-channel TDC with 22ps resolution
• Analog frontend for ultrasonic flow meters
• Chopper-stabilized low-offset comparator for zero crossing detection
• Precise windowing for hit selection
• Temperature measuring unit for PT1000 sensors
• QFN32 package

Part Descriptions

Applications:

• Ultrasonic heat meters
• Ultrasonic gas meters
• Ultrasonic flow indicators
• Laser rangefinders
• Magnetostrictive sensors