Key Selection Information
| Selection Parameter | Confirmed Information |
|---|---|
| Resolution | 55 ps stated resolution |
| Precision | 35 ps standard deviation stated feature |
| Measurement Mode 1 | 12 ns to 500 ns |
| Measurement Mode 2 | 250 ns to 8 ms |
| Stops | Up to 5 STOP signals |
| Supply | 2 V to 3.6 V |
| Interface / Power | SPI; 0.5 µA at 2 SPS stated feature |
| Exact Package / Packing | TSSOP (PW), 14 pins; 2000-piece large tape and reel |
Product Overview
TDC7200PWR measures elapsed time between a START edge and up to five STOP edges, making it a digital timing front end for ultrasonic flow, LIDAR/SONAR and position systems rather than a voltage ADC. Two measurement modes cover short nanosecond intervals through millisecond-scale time of flight.
The 55 ps resolution headline must be distinguished from complete system distance accuracy. Comparator threshold variation, transducer/laser pulse shape, analog front-end delay, reference-clock stability and calibration can dominate the final ToF error even when the TDC quantization is much finer.
Multi-cycle averaging reduces host activity and power for slowly sampled metering applications, while SPI provides register/configuration access. The exact PWR order code is the 2000-piece TSSOP reel option.
For related devices, see HKEQGOO’s ADCs/DACs – Special Purpose category.
Technical Specifications
| Parameter | Verified Information |
|---|---|
| Manufacturer | Texas Instruments |
| Exact MPN | TDC7200PWR |
| Resolution | 55 ps stated resolution |
| Precision | 35 ps standard deviation stated feature |
| Measurement Mode 1 | 12 ns to 500 ns |
| Measurement Mode 2 | 250 ns to 8 ms |
| Stops | Up to 5 STOP signals |
| Supply | 2 V to 3.6 V |
| Interface / Power | SPI; 0.5 µA at 2 SPS stated feature |
| Exact Package / Packing | TSSOP (PW), 14 pins; 2000-piece large tape and reel |
| Manufacturer Status | Active / Production |
| Part Marking | T7200 |
Functional Highlights
Mode choice changes how the timing interval is measured
Mode 1 targets shorter intervals while Mode 2 handles longer time-of-flight windows. Firmware should choose the mode from expected minimum/maximum path delay rather than simply using the highest nominal resolution mode.
Multiple STOP inputs enable more than one echo/event per START
Up to five STOP events can support echo selection or repeated edge timing, but analog detection must prevent false/noise edges from consuming those events.
Design Considerations
- Budget analog-front-end and comparator timing uncertainty separately from the 55 ps converter resolution.
- Use a stable reference clock and calibrate system delay if absolute distance/time accuracy matters.
- Design START/STOP signal integrity to avoid ringing or threshold re-crossing that can create false timestamps.
Product Status and Exact Order Code
Manufacturer status: Active / Production
Texas Instruments lists TDC7200PWR as Active / Production; TSSOP (PW), 14 pins; 2000-piece large tape and reel; Level-1-260C-UNLIM; −40°C to +85°C; marking T7200.
Related Engineering Resources
Quality & Verification Support
Third-party inspection or testing can be arranged according to customer requirements. Testing fees are borne by the buyer. Additional verification requirements can be discussed before shipment. After an order is placed, physical product, label, packaging, and Date Code photos may be provided where appropriate.
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