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.
技术文档
| 顶层文档 | 类型 | 标题 | 格式选项 | 下载最新的英语版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 数据表 | TDC7200 Time-to-Digital Converter for Time-of-Flight Applications in LIDAR, Magnetostrictive and Flow Meters 数据表 (Rev. D) | PDF | HTML | 2016-3-7 | ||
| 应用手册 | Interleaved Short Time Measurements Using TDC7200 | 2015-10-30 | ||||
| 技术文章 | Time-of-flight measurements using high-performance time-to-digital converters | PDF | HTML | 2015-7-31 | |||
| 技术文章 | Why are flow meter manufacturers switching from mechanical to ultrasonic? | PDF | HTML | 2015-6-11 | |||
| 应用手册 | Measuring an RTD Sensor with the TDC1000 and TDC7200 for Ultrasonic Sensing | 2015-4-9 |
设计与开发
如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。
TDC7200EVM — TDC7200 评估模块
TDC7200EVM 是一个评估模块，允许用户评估 TDC7200 时间-数字转换器的操作和性能。一个示例是计算飞行时间，无论是用于 LIDAR 还是超声波应用。TDC7200EVM 具有两个用于 START 脉冲和 STOP 脉冲的 SMA 连接器，并与 MSP430 LaunchPad 评估套件相连以捕获数据。 EVM 配备了一个用户友好的图形用户界面 (GUI)，以修改寄存器和显示数据。
TIDA-00663 — LIDAR 脉冲飞行时间参考设计
TIDM-ULTRASONIC-FLOW-TDC — 采用时数转换的超声波流量计设计
TIDM-ULTRASONIC-FLOW-TDC 参考设计适用于配备 LCD 的超声波流量计（水表、燃气表或热量计），使用时数转换器和超低功耗 MCU 构建而成。解决方案包括优化的泄漏检测、低功耗和小外形尺寸，这些特性对于水表、热量计和燃气表应用很重要。此设计还包括用于系统电源的高效直流/直流转换器。
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| TSSOP (PW) | 14 | Ultra Librarian |
订购和质量
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