ams – TDC-GP30-F01: Single-Chip Hardware and Software Solution for Ultrasonic Water Flow Metering


TDC-GP30-F01 is a complete ultrasonic flow metering solution, including the flow calculation. It drastically simplifies the design of ultrasonic heat and water meters and is the necessary step for compact energy-saving ultrasonic water meters. The ultra-low current capabilities allow the use of standard 2/3 AA or AA lithium thionyl chloride batteries at 6-8 Hz measuring frequency even in the water meter version. The TDC-GP30-F01 firmware does the linearization and temperature compensation based on spool-piece specific calibration data and completes the system-on-chip approach.

• High performance + ultra-low power 32-bit CPU
• Transducers can be connected directly to GP30 with no external components required
• Firmware adopts automatically to zero flow (2Hz) or flow (8Hz) condition
• Error handling, bubble detection
• SPI, UART and pulse interface
• Advanced high-precision analog part
• Firmware for calculation of flow, volume and temperature, including linearization and two-point calibration
• -40°C to +125°C ambient temperature range
• QFN32, QFN40 packages
• 1k MSRP: $9.50 US