Support software
Data sheet
TUSS4440
- Integrated driver for transformer driven transducers and receiver stage with analog output for ultrasound applications
- 86-dB input dynamic range analog front-end
- First stage low noise amplifier adjustable to 10, 12.5, 15 and 20 V/V
- Configurable bandpass filter from 40 KHz to 500 KHz
- Wide-band logarithmic amplifier
- Supported transducer frequencies (controlled by external clock)
- 40 KHz to 400 KHz
- For low-power applications
- Standby mode: 1.7 mA (typical)
- Sleep mode: 220 µA (typical)
- Configurable drive stage:
- Complimentary low-side drivers with current limit for transformer based transducer excitation
- Configurable burst patterns using IO1 and IO2 pins
- Outputs:
- Voltage output of the demodulated echo envelope on VOUT
- Input signal zero crossing comparator output on OUT3 pin
- Programmable VOUT threshold crossing on OUT4 pin
- Serial Peripheral Interface (SPI) for configuration by microcontroller (MCU)
The TUSS4440 is a highly integrated transformer drive analog front end for industrial ultrasonic applications. The transducer drive stage consists of low-side complementary drivers that can be configured to drive an ultrasonic transducer through a step-up transformer. The device delivers constant current to the primary side of the transformer.
The receive signal path includes a low-noise linear amplifier, a bandpass filter, followed by a logarithmic gain amplifier for input dependent amplification. The logarithmic amplifier allows for high sensitivity for weak echo signals and offers excellent input dynamic range over full range of reflected echoes.
The drivers can be controlled directly through the microcontroller for complete customization of the burst signal, or can be programmed through SPI with a customizable burst length. The TUSS4440 can support a single transducer to send and receive burst signals, or can set up two transducers to split the send and receive functions.
Technical documentation
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View all 8 | Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | TUSS4440 Transformer Drive Ultrasonic Sensor IC With Logarithmic Amplifier datasheet (Rev. A) | PDF | HTML | 19 May 2022 |
| Application note | Ultrasonic Sensing Basics (Rev. D) | PDF | HTML | 02 Dec 2021 | |
| Technical article | Shrink your solution size with transformer-less ultrasonic ICs | PDF | HTML | 15 Jun 2020 | |
| User guide | TUSS44x0 EVM for Ultrasonic Sensors User's Guide (Rev. A) | 02 Apr 2020 | ||
| E-book | Ein Techniker-Leitfaden für Industrieroboter-Designs | 25 Mar 2020 | ||
| Application note | TUSS44x0 Software Development Guide | PDF | HTML | 17 Mar 2020 | |
| Application note | Logarithmic Amplifier for Ultrasonic Sensor Signal Conditioning | 13 Mar 2020 | ||
| E-book | E-book: An engineer’s guide to industrial robot designs | 12 Feb 2020 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
Evaluation board
BOOSTXL-TUSS4440 — TUSS4440 transformer driven ultrasonic transducer with LDO evaluation module
The TUSS4440 EVM is a collective of the BOOSTXL-TUSS4440 and MSP-EXP430F5529LP, which enables users to fully evaluate the TUSS4440 ultrasonic sensor signal conditioner and transformer driver. Transducer compatibility is expanded to open- or closed-top transducers operating between 30 to 500 kHz. (...)
User guide: PDF
Support software
SLDC023 — TUSS44x0 Energia Library and Code Example
Gerber file
Transformer-Drive Ultrasonic Proximity Sensing Module Design Files (TUSS4440PSM)
SLDC024.ZIP (4505 KB)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| WQFN (RTJ) | 20 | Ultra Librarian |
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