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Ultrasonic Flow Converters description

Based on time-to-digital conversion technology for precision time-of-flight measurement, the ultrasonic flow converters operate the analog front end to drive and read transducers, detect the zero crossing in the receive signal and measure the travel time of the ultrasonic bursts. The whole front-end is optimized for ultra-low power operation. Besides pure front-end devices, ams also offers flow converters which integrate a low-power 32-bit CPU to calculate the flow. Some are supplied with the flow firmware on-chip. The devices communicate via SPI, but for stand-alone applications the output may be provided via a pulse interface.

Asset Publisher

PartNo Description Analog Frontend

First Wave Detection

Amplitude Measurement

Number of Hits

Resolution

ps

Operating Supply Range

Interface

CPU

Firmware

Memory

GPIO

Ambient Temperature Range

°C

Package

Datasheet Demo Buy
TDC-GP21

Time-to-digital converter with integrated analog front-end

Yes - - 3 22 2.5 to 3.6 SPI - - - - -40 to +125 QFN32
TDC-GP22

Next generation time-to-digital converter with integrated analog front-end

Yes Yes 3 22 2.5 to 3.6 SPI -40 to +125 QFN32
TDC-GP30

System on chip solution for ultrasonic flow metering

Yes Yes Yes 31 11 2.5 to 3.6 SPI, UART, Pulse 32-bit 4k NVRAM, 4k ROM 6 -40 to +125 QFN32, QFN40
TDC-GP30-F01

Firmware supported intelligent ultrasonic flow converter

Yes Yes Yes 31 11 2.5 to 3.6 SPI, UART, Pulse 32-bit Volume, flow, and temperature calculation 4k NVRAM, 4k ROM 6 -40 to +125 QFN32, QFN40