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THS789

SLOS776A – SEPTEMBER 2012 – REVISED DECEMBER 2015

THS789 Quad-Channel Time Measurement Unit (TMU)

1 Features

3 Description

The THS789 device is a version of the THS788 with

1

•

Four Event Channels + Sync Channel

a reduced number of features.

•

Single-Shot Accuracy: 800 ps

The THS789 is a four-channel timing measurement

•

Precision: 100 ps

unit

(TMU)

that

incorporates

a

time-to-digital

•

Result Interface Range: –7 to 7 s

converter (TDC) architecture for fast and accurate

•

Event Input Rate: 200 MHz

measurements. The TMU can provide less than

800 ps of single-shot accuracy. The TDC has 13 ps

•

High-Speed Serial Host-Processor Bus Interface:

resolution (LSB), which is derived from an external

50 MHz

master clock of 200 MHz. It uses fast LVDS-

•

High-Speed LVDS-Compatible Serial-Result Bus

compatible interfaces for all of its event inputs and

per Channel

serial result outputs, which allows for fast and reliable

•

Temperature Sensor

data transfer. Each channel can process timestamps

at a maximum speed of 200 MSPS.

•

Single 3.3-V Supply

The THS789 has a 40-bit serial-result interface that is

2 Applications

operated at 300 MHz using single data rate clocking.

The event channels can be programmed to take

•

Automatic Test Equipment

timestamps on rising edges or falling edges. Host

•

Benchtop Time-Measurement Equipment

programming

is

achieved

through

a

50-MHz

•

Radar and Sonar

LVCMOS interface.

•

Medical Imaging

The THS789 is available in a HTQFP-100 with a heat

•

Mass Spectroscopy

slug on top for easy heat-sink access. The device is

built using TI's RF SiGe process technology, which

•

Nuclear and Particle Physics

allows for maximum timing accuracy with low power.

•

Laser Distance Measurement

•

Ultrasonic Flow Measurement

Device Information

PART NUMBER

PACKAGE

BODY SIZE (NOM)

THS789

HTQFP (100)

14.00 mm × 14.00 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

Simplified Schematic

1

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.