MSKSEMI MTDC-GP22S

MTDC-GP22S is a high-precision time measurement circuit with integrated analog comparators, analog switches, and Schmitt triggers, significantly simplifying the peripheral circuitry. It also incorporates a first-wave detection function that substantially enhances noise immunity. By reading the relative width of the first echo pulse, users can obtain signal strength indicators to identify anomalies such as ultrasonic transducer faults, increased pipe wall deposits, and air bubbles in water. A single command completes one ultrasonic transit-time measurement (both upstream and downstream) along with data readout, greatly reducing software overhead and power consumption.

• Dual-channel single-precision mode 90ps, single-channel dual-precision mode 45ps
• Measurement range: 3.5ns (0ns) to 2.4μs
• 20ns minimum pulse interval, up to 4 pulses receivable
• First-wave detection function, capable of measuring pulse width of the first wave
• Integrated analog switch for input selection
• Single-channel single-precision mode 90ps, dual-precision mode 45ps, quad-precision mode 22.5ps
• Measurement range: 500ns to 4ms (at 4M high-speed clock)
• Capable of measuring 3 pulses with automatic processing of 3 data sets
• Supports 2 or 4 temperature sensors, PT500/PT1000 or higher
• Integrated Schmitt trigger
• Ultra-low power consumption (0.08μA at one measurement per 30 seconds)

• Ultrasonic heat meters, water meters
• Laser ranging