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TSSOP (PW) 28 62 mm² 9.7 x 6.4 open-in-new Find other Ultrasonic sensor AFEs


  • Measurement Range: Up to 8 ms
  • Operating Current: 1.8 µA (2 SPS)
  • Transmitter Channel TX
    • Supports Single Transducer Applications
    • Programmable Excitation: 31.25 kHz to 4 MHz,
      Up to 31 Pulses
  • Receiver Channel RX
    • STOP Cycle-to-Cycle Jitter: 50 psRMS
    • Low-Noise and Programmable Gain Amplifiers
    • Access to Signal Chain for External Filter
    • Programmable Threshold Comparator for Echo
    • Programmable Low Power Mode for Long TOF
  • Temperature Measurement
    • Interface to Two PT1000/500 RTDs
    • RTD-to-RTD Matching Accuracy 0.02°CRMS
  • Operating Temperature Range: –40°C to 125°C
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The TDC1011 is a fully integrated analog front-end (AFE) for ultrasonic sensing measurements of liquid level, fluid identification/concentration, and proximity/ distance applications common in automotive, industrial, medical, and consumer markets. When paired with an MSP430/C2000 MCU, power, wireless, and source code, TI provides the complete ultrasonic sensing solution.

TI’s Ultrasonic AFE offers programmability and flexibility to accommodate a wide-range of applications and end equipment. The TDC1011 can be configured for multiple transmit pulses and frequencies, gain, and signal thresholds for use with a wide-range of transducer frequencies (31.25kHz to 4MHz) and Q-factors. Similarly, the programmability of the receive path allows ultrasonic waves to be detected over a wider range of distances/tank sizes and through various mediums.

Selecting different modes of operation, the TDC1011 can be optimized for low power consumption, making it ideal for battery powered applications. The low noise amplifiers and comparators provide extremely low jitter, enabling picosecond resolution and accuracy.

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Technical documentation

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Type Title Date
* Data sheet TDC1011 Single Channel Ultrasonic Sensing Analog Front End (AFE) for Level Sensing, Concentration Sensing Applications datasheet Jul. 07, 2015
Application note Ultrasonic Sensing Basics (Rev. C) Mar. 26, 2020
Technical article How ultrasonic technology improves convenience and performance in home automation Oct. 05, 2017
Technical article Power naps: saving energy using ultrasonic sensing Aug. 16, 2016
Application note How to Select and Mount Transducers in Ultrasonic Sensing for Level Sensing and (Rev. A) Nov. 25, 2015
Application note Using Ultrasonic Sensing to Monitor Level in Tanks Jul. 25, 2015
Application note Ultrasonic Sensing Basics for Liquid Level Sensing, Flow Sensing, and Fluid Iden (Rev. A) Jun. 11, 2015
Application note Ultrasonic Sensing for Fluid Identification and Contamination Apr. 30, 2015
User guide TDC1000-C2000EVM User’s Guide Dec. 09, 2014

Design & development

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Hardware development

document-generic User guide
Recommended alternative products

  • For evaluation of TUSS4470, a device with SIMILAR FUNCTIONALITY but not functionally equivalent to TDC1000 for direct-drive ultrasonic systems up to 1 MHz, please use the BOOST-TUSS4470.
  • For evaluation of TUSS4440, a device with SIMILAR FUNCTIONALITY but not (...)
  • TDC1000-C2000 GUI interface to customize, configure and control the ultrasonic setup, and monitor the performance of the resulting ultrasonic activity.
  • On-board C2000-TMS320F28305PAG microcontroller to process data.
  • Connectors for two ultrasonic transducers that operate at a frequency between 31.25 (...)

Design tools & simulation

SLAC787.ZIP (21 KB)

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