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Product details

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Package | Pins | Size

NFBGA (ZAX) 25 16 mm² 4 x 4 open-in-new Find other Ultrasonic sensor AFEs

Features

  • Resolution: 55 ps
  • Standard Deviation: 35 ps
  • Measurement Range:
    • Individual Mode 1: 12 ns to 2000 ns
    • Individual Mode 2: 250 ns to 8 ms
    • Combined Operation: 0.25 ns to 8 ms
  • Low Active Power Consumption: 2.7 mA
  • Supports up to 10 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 Interface for Register Access
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Description

The TDC7201 is designed for use with ultrasonic, laser and radar range finding equipment using time-of-flight technique. The TDC7201 has two built-in Time-to-Digital Converters (TDCs) that can be used to measure distance down to 4 cm and up to several kilometers using a simple architecture, which eliminates the need to use expensive FPGAs or processors.

Each 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 simultaneously and individually on two pairs of START and STOP pins using two built-in TDCs offers high flexibility in time measurement design.

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 TDC7201 ideal for range finder applications.

When placed in the Autonomous Multi-Cycle Averaging Mode, the TDC7201 device can be optimized for low system power consumption, which is ideal for battery-powered flow meters. In this mode, the host can go to sleep to save power and wake up when interrupted by the TDC upon completion of the measurement sequence.

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Technical documentation

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Type Title Date
* Datasheet TDC7201 Time-to-Digital Converter for Time-of-Flight Applications in LIDAR, Range Finders, and ADAS datasheet May 19, 2016
Application notes Time of Flight and LIDAR - Optical Front End Design Feb. 04, 2020
Technical articles How ultrasonic technology improves convenience and performance in home automation Oct. 05, 2017
Technical articles Power naps: saving energy using ultrasonic sensing Aug. 16, 2016
Application notes Short Time Measurement Using TDC7201 Jun. 30, 2016
User guides TDC7201-ZAX-EVM User’s Guide (Rev. A) May 24, 2016

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARDS Download
document-generic User guide
$75.00
Description
The TDC7201-ZAX-EVM is an evaluation module that allows users to test and evaluate the TDC7201 Time-to-Digital Converter. The TDC7201 can be used for accurate time measurements in LIDAR applications. The EVM is a BoosterPack plug-in module for the MSP430F5529 LaunchPad. The TDC7201-ZAX-EVM has two (...)
Features
  • EVM connects with MSP430 LaunchPad (MSP-EXP430F5529LP)
  • User friendly GUI for quick evaluation and data capture
  • SMA connectors for START and STOP inputs
  • Powered by MSP430 LaunchPad USB interface (no external power needed)

Note: MSP430 LaunchPad has to be ordered separately and is not part of the (...)

Design tools & simulation

SIMULATION MODELS Download
SNAM198.ZIP (37 KB) - IBIS Model

Reference designs

REFERENCE DESIGNS Download
Reference design maximizing transimpedance bandwidth for LIDAR and time-of-flight (ToF) applications
TIDA-060025 — This design demonstrates a high-speed optical front-end with a Time of Flight (ToF) distance measurement circuit using a fiber-optic transmission medium, which can be adapted to any type of ToF measurement such as through free space. This design features an industry-leading 2.5-V output linear (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
NFBGA (ZAX) 25 View options

Ordering & quality

Support & training

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Videos

Time of Flight & LIDAR - Optical Front End Reference Design

Reference design overview that showcases TI high speed amplifiers, comparators, and time-to-digital converters in a optical time of flight (ToF) system.

Posted: 13-Jan-2018
Duration: 04:45

More information about TI's OPA858 high speed transimpedance amplifier (TIA)

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