TDC7200
- Resolution: 55 ps
- Standard Deviation: 35 ps
- Measurement Range:
- Mode 1: 12 ns to 500 ns
- Mode 2: 250 ns to 8 ms
- Low Power Consumption: 0.5 µA (2 SPS)
- Supports up to 5 STOP Signals
- Autonomous Multi-Cycle Averaging Mode for Low
Power Consumption - Supply Voltage: 2 V to 3.6 V
- Operating Temperature –40°C to 85°C
- SPI Host Interface for Configuration and Register
Access
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.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | TDC7200 Time-to-Digital Converter for Time-of-Flight Applications in LIDAR, Magnetostrictive and Flow Meters datasheet (Rev. D) | PDF | HTML | 2016年 3月 7日 |
| Application note | Interleaved Short Time Measurements Using TDC7200 | 2015年 10月 30日 | ||
| Technical article | Time-of-flight measurements using high-performance time-to-digital converters | PDF | HTML | 2015年 7月 31日 | |
| Technical article | Why are flow meter manufacturers switching from mechanical to ultrasonic? | PDF | HTML | 2015年 6月 11日 | |
| Application note | Measuring an RTD Sensor with the TDC1000 and TDC7200 for Ultrasonic Sensing | 2015年 4月 9日 | ||
| EVM User's guide | TDC7200EVM User’s Guide | 2015年 1月 8日 |
設計與開發
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TDC7200EVM — TDC7200 評估模組
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 (...)
TIDM-ULTRASONIC-FLOW-TDC — 使用時間轉數位轉換器進行超音波水錶設計
TIDA-00663 — 光達脈衝飛時測距參考設計
| 封裝 | 引腳 | 下載 |
|---|---|---|
| TSSOP (PW) | 14 | 檢視選項 |
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