TDC7200PW

The TDC7200PW from Texas Instruments is a Time-to-Digital Converter (TDC) specifically designed for time-of-flight (ToF) applications, including LIDAR, magnetostrictive, and flow meters. It functions as a high-precision stopwatch, measuring the elapsed time between a START pulse and up to five STOP pulses, offering flexibility in selecting the optimal echo signal.

Key electrical specifications include a supply voltage range of 2 V to 3.6 V, an operating temperature range of -40°C to 85°C, and an SPI host interface for configuration. The device boasts a resolution of 55 ps and a standard deviation of 35 ps, with measurement ranges of 12 ns to 500 ns (Mode 1) and 250 ns to 8 ms (Mode 2). It consumes low power, drawing only 0.5 µA at 2 SPS, making it suitable for battery-powered devices. The TDC7200PW supports up to 5 STOP signals and features an Autonomous Multi-Cycle Averaging Mode for optimized low-power consumption.

Packaged in a 14-TSSOP, the TDC7200PW is designed for surface mount applications. Its self-calibrated time base ensures accuracy over time and temperature, making it ideal for applications requiring high precision, such as flow meters where accurate zero and low flow measurements are critical. When paired with components like the TDC1000, it can form a complete ultrasonic sensing solution.