The TDC7200 is a Time-to-Digital Converter (TDC) for ultrasonic sensing measurements such as water flow meter, gas flow meter, and heat flow meter. When paired with the TDC1000 (ultrasonic analog-front-end), the TDC7200 can be a part of a complete TI ultrasonic sensing solution that includes the MSP430, power, wireless, and source code.
The Time to Digital Converter (TDC) performs the function of a stopwatch and measures the elapsed time (time-of-flight or TOF) between a START pulse and up to five STOP pulses. The ability to measure from START to multiple STOPs gives users the flexibility to select which STOP pulse yields the best echo performance.
The device has an internal self-calibrated time base which compensates for drift over time and temperature. Self-calibration enables time-to-digital conversion accuracy in the order of picoseconds. This accuracy makes the TDC7200 ideal for flow meter applications, where zero and low flow measurements require high accuracy.
When placed in the Autonomous Multi-Cycle Averaging Mode, the TDC7200 can be optimized for low system power consumption, making it ideal for battery powered flow meters. In this mode, the host can go to sleep to save power, and it can wake up when interrupted by the TDC upon completion of the measurement sequence.
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | TDC7200 Time-to-Digital Converter for Time-of-Flight Applications in LIDAR, Magnetostrictive and Flow Meters datasheet (Rev. D) | PDF | HTML | Mar 7, 2016 |
| Application note | Interleaved Short Time Measurements Using TDC7200 | Oct 30, 2015 | ||
| Technical article | Time-of-flight measurements using high-performance time-to-digital converters | PDF | HTML | Jul 31, 2015 | |
| Technical article | Why are flow meter manufacturers switching from mechanical to ultrasonic? | PDF | HTML | Jun 11, 2015 | |
| Application note | Measuring an RTD Sensor with the TDC1000 and TDC7200 for Ultrasonic Sensing | Apr 9, 2015 |
For additional terms or required resources, click any title below to view the detail page where available.
The TDC7200EVM is an evaluation module that allows users to evaluate the operation and performance of the TDC7200 Time-to-Digital Converter. One example is calculating time of flight – whether it be for LIDAR or ultrasonic applications. The TDC7200EVM has two SMA connectors for the START and (...)
The TIDM-ULTRASONIC-FLOW-TDC is a reference design for an ultrasonic flow meter (water, gas or heat meter) with LCD built using a Time-to-Digital converter and an ultra-low power MCU. Solution includes optimized leakage detection, low power consumption, and a small form factor that are (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| TSSOP (PW) | 14 | Ultra Librarian |
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
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