Product details


Type Analog front-end (AFE) Features Direct drive Frequency (kHz) 31.25-4000 kHz Gain (Min) (dB) 20 Gain (Max) (dB) 41 Number of input channels 2 Supply voltage (Max) 5.5 Operating temperature range (C) -40 to 125 Supply voltage (Min) 2.7 Interface type SPI Rating Catalog open-in-new Find other Ultrasonic sensor AFEs

Package | Pins | Size

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


  • Automotive AEC-Q100 (TDC1000-Q1)
  • Measurement Range: Up to 8 ms
  • Operating Current: 1.8 µA (2 SPS)
  • Transmitter Channels TX1/TX2:
    • Supports Single or Dual-Transducer
    • Programmable Excitation: 31.25 kHz to 4 MHz,
      Up to 31 Pulses
  • Receiver Channels RX1/RX2:
    • 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
    • Automatic Channel Swapping for Differential
      Time-of-Flight (TOF) Measurement
    • 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 TDC1000 is a fully integrated analog front-end (AFE) for ultrasonic sensing measurements of level, fluid identification/concentration, flow, 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 TDC1000 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 TDC1000 can be optimized for low power consumption, making it ideal for battery powered flow meters, level instrumentation, and distance/proximity measurements. The low noise amplifiers and comparators provide extremely low jitter, enabling picosecond resolution and accuracy for zero and low flow measurements.

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Technical documentation

Design & development

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

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

SNAM173.ZIP (130 KB) - IBIS Model
SNAM193.TSC (458 KB) - TINA-TI Reference Design
SNAM194.ZIP (13 KB) - TINA-TI Spice Model
SLAC787.ZIP (21 KB)

Reference designs

参考设计 Download
Automotive Ultrasonic Fluid Level/Quality Measurement Reference Design
TIDA-00322 TI reference design TIDA-00322 is an automotive liquid level and fluid identification measurement system. It is based on the dual-channel TDC1000-Q1 ultrasonic AFE and the real-time microcontroller C2000. This reference design can also be used with the TDC1000 for industrial/consumer applications (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
TSSOP (PW) 28 View options

Ordering & quality

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