Transformer drive ultrasonic sensor IC with logarithmic amplifier
Product details
Parameters
Package | Pins | Size
Features
- 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)
All trademarks are the property of their respective owners.
Description
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
Type | Title | Date | |
---|---|---|---|
* | Datasheet | TUSS4440 Transformer Drive Ultrasonic Sensor IC With Logarithmic Amplifier datasheet | Dec. 17, 2017 |
Technical articles | Shrink your solution size with transformer-less ultrasonic ICs | Jun. 15, 2020 | |
User guide | TUSS44x0 EVM for Ultrasonic Sensors User's Guide (Rev. A) | Apr. 02, 2020 | |
Application note | Ultrasonic Sensing Basics (Rev. C) | Mar. 26, 2020 | |
E-book | Ein Techniker-Leitfaden für Industrieroboter-Designs | Mar. 25, 2020 | |
Application note | TUSS44x0 Software Development Guide | Mar. 17, 2020 | |
Application note | Logarithmic Amplifier for Ultrasonic Sensor Signal Conditioning | Mar. 13, 2020 | |
E-book | E-book: An engineer’s guide to industrial robot designs | Feb. 12, 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 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
Features
- Compatible with ultrasonic transducers operating at frequencies between 30 to 500 kHz.
- Able to generate maximum sound pressure level using a transformer driver.
- Compatible with microcontrollers operating at 3.3 or 5 V for SPI communication.
- Modular receive path filter value selector to support entire (...)
Software development
Design tools & simulation
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
QFN (RTJ) | 20 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
Support & training
TI E2E™ forums with technical support from TI engineers
Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.
If you have questions about quality, packaging or ordering TI products, see TI support.