Overview
The THS788PFDT, produced by Texas Instruments, is a four-channel timing measurement unit (TMU) that incorporates a time-to-digital converter (TDC) architecture. This device is designed for fast and accurate time measurements, offering 8 ps of single-shot accuracy and a 13-ps resolution derived from an external master clock of 200 MHz. The TMU uses LVDS-compatible interfaces for event inputs and serial result outputs, enabling fast and reliable data transfer. Each channel can process timestamps at a maximum speed of 200 MSPS. The device is highly programmable, allowing for various configurations such as data length, frequency, and data-rate mode (DDR and normal), and it supports event management with programmable wait times before measurements.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Single-Shot Accuracy | 8 | ps |
| TDC Resolution (LSB) | 13 | ps |
| Master Clock Frequency | 200 | MHz |
| Event Input Rate | 200 | MHz |
| Supply Voltage | 3.135 - 3.465 | V |
| Operating Temperature | 0 - 70 | °C |
| Package Type | HTQFP-100 | |
| Power Consumption per Channel | 675 | mW |
| Serial-Result Interface Speed | 75 - 300 | MHz |
| High-Speed Serial Host-Processor Bus Interface | 50 | MHz |
Key Features
- Four independent event channels plus one sync channel
- High-speed LVDS-compatible serial-result bus and event inputs
- Programmable serial-result interface speed (75 MHz to 300 MHz)
- Programmable data length, frequency, and data-rate mode (DDR and normal)
- Event channels can be programmed to take timestamps on rising or falling edges
- Event management mode with programmable wait times before measurements
- Single 3.3-V supply and low power consumption
- Temperature sensor and overtemperature alarm
- High-speed serial host-processor bus interface (50 MHz)
Applications
- Automatic Test Equipment
- Benchtop Time-Measurement Equipment
- Radar and Sonar
- Medical Imaging
- Mass Spectroscopy
- Nuclear and Particle Physics
- Laser Distance Measurement
- Ultrasonic Flow Measurement
Q & A
- What is the single-shot accuracy of the THS788PFDT?
The THS788PFDT offers 8 ps of single-shot accuracy.
- What is the resolution of the TDC in the THS788PFDT?
The TDC has a 13-ps resolution (LSB).
- What is the maximum event input rate of the THS788PFDT?
The maximum event input rate is 200 MHz.
- What is the supply voltage range for the THS788PFDT?
The supply voltage range is 3.135V to 3.465V.
- What is the operating temperature range for the THS788PFDT?
The operating temperature range is 0°C to 70°C.
- What type of package is the THS788PFDT available in?
The THS788PFDT is available in an HTQFP-100 package.
- What is the power consumption per channel for the THS788PFDT?
The power consumption per channel is approximately 675 mW.
- What are the programmable serial-result interface speeds for the THS788PFDT?
The serial-result interface speed can be programmed from 75 MHz to 300 MHz.
- Can the event channels be programmed to take timestamps on different edges?
- What are some of the typical applications of the THS788PFDT?
The THS788PFDT is used in applications such as automatic test equipment, benchtop time-measurement equipment, radar and sonar, medical imaging, and more.
