THS789

The THS789 device is a version of the THS788 with a reduced number of features.

The THS789 is a four-channel timing measurement unit (TMU) that incorporates a time-to-digital converter (TDC) architecture for fast and accurate measurements. The TMU can provide less than 800 ps of single-shot accuracy. The TDC has 13 ps resolution (LSB), which is derived from an external master clock of 200 MHz. It uses fast LVDS-compatible interfaces for all of its event inputs and serial result outputs, which allows for fast and reliable data transfer. Each channel can process timestamps at a maximum speed of 200 MSPS.

The THS789 has a 40-bit serial-result interface that is operated at 300 MHz using single data rate clocking. The event channels can be programmed to take timestamps on rising edges or falling edges. Host programming is achieved through a 50-MHz LVCMOS interface.

The THS789 is available in a HTQFP-100 with a heat slug on top for easy heat-sink access. The device is built using TI’s RF SiGe process technology, which allows for maximum timing accuracy with low power.