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TUSS4470

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Ultraschallsensor-IC mit Direktantrieb und logarithmischem Verstärker

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TUSS4470

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Produktdetails

Type Analog front-end (AFE) Features Direct drive Gain (min) (dB) 19 Gain (max) (dB) 113 Number of input channels 1 Operating temperature range (°C) -25 to 105 Interface type SPI Rating Catalog
Type Analog front-end (AFE) Features Direct drive Gain (min) (dB) 19 Gain (max) (dB) 113 Number of input channels 1 Operating temperature range (°C) -25 to 105 Interface type SPI Rating Catalog
WQFN (RTJ) 20 16 mm² (4 mm × 4 mm)
  • Integrated driver for directly driving 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 1 MHz
    • Pre-driver mode: 40 KHz to 440 KHz
  • For low-power applications
    • Standby mode: 1.7 mA (typical)
    • Sleep mode: 220 µA (typical)
  • Configurable drive stage:
    • Direct drive using internal H-Bridge for transducer excitation
    • Pre-driver configuration to use internal H-bridge to drive external Field Effect Transistors (FETs) for higher current drive
    • 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)
  • Integrated driver for directly driving 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 1 MHz
    • Pre-driver mode: 40 KHz to 440 KHz
  • For low-power applications
    • Standby mode: 1.7 mA (typical)
    • Sleep mode: 220 µA (typical)
  • Configurable drive stage:
    • Direct drive using internal H-Bridge for transducer excitation
    • Pre-driver configuration to use internal H-bridge to drive external Field Effect Transistors (FETs) for higher current drive
    • 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 TUSS4470 is a highly integrated direct drive analog front end for industrial ultrasonic applications. The transducer drive stage is an internal H-bridge that can be configured to drive the transducer in direct-drive mode to achieve maximum voltage across the transducer. The internal H-bridge can also be configured as a pre-driver for external FETs, enabling higher current and voltage drive for larger transducers.

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 TUSS4470 can support a single transducer to send and receive burst signals, or can set up two transducers to split the send and receive functions.

The TUSS4470 is a highly integrated direct drive analog front end for industrial ultrasonic applications. The transducer drive stage is an internal H-bridge that can be configured to drive the transducer in direct-drive mode to achieve maximum voltage across the transducer. The internal H-bridge can also be configured as a pre-driver for external FETs, enabling higher current and voltage drive for larger transducers.

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 TUSS4470 can support a single transducer to send and receive burst signals, or can set up two transducers to split the send and receive functions.
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Top-Dokumentation Typ Titel Format-Optionen Neueste englische Version herunterladen Datum
* Datenblatt TUSS4470 Transformer Drive Ultrasonic Sensor IC With Logarithmic Amplifier datasheet (Rev. A) PDF | HTML 19.05.2022
Anwendungshinweis Ultrasonic Sensing Basics (Rev. D) PDF | HTML 02.12.2021
Anwendungshinweis Ultrasonic Application Optimization and Usage Guide: TUSS4470 and TDC1000 PDF | HTML 18.01.2021
Technischer Artikel Shrink your solution size with transformer-less ultrasonic ICs PDF | HTML 15.06.2020
Benutzerhandbuch TUSS44x0 EVM for Ultrasonic Sensors User's Guide (Rev. A) 02.04.2020
E-book Ein Techniker-Leitfaden für Industrieroboter-Designs Download English Version 25.03.2020
Anwendungshinweis TUSS44x0 Software Development Guide PDF | HTML 17.03.2020
Anwendungshinweis Logarithmic Amplifier for Ultrasonic Sensor Signal Conditioning 13.03.2020

Design und Entwicklung

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Evaluierungsplatine

BOOSTXL-TUSS4470 — TUSS4470-Ultraschallwandler mit Direktantrieb und LDO-Evaluierungsmodul

Das TUSS4470-EVM ist eine Kombination aus BOOSTXL-TUSS4470 und MSP-EXP430F5529LP, mit der Benutzer den TUSS4470-Ultraschallsensor-Signalumformer und H-Brückentreiber vollständig evaluieren können. Die Messwandler-Kompatibilität wurde auf Wandler mit offenem oder geschlossenem Gehäuse für den (...)
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Support-Software

SLDC021 — TUSS Generation III EVM GUI

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Support-Software

SLDC023 — TUSS44x0 Energia Library and Code Example

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Gehäuse Pins CAD-Symbole, Footprints und 3D-Modelle
WQFN (RTJ) 20 Ultra Librarian
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