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AFE sensores ultrasónicos

TUSS4470

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IC de sensor ultrasónico de accionamiento directo con amplificador logarítmico

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TUSS4470

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Detalles del producto

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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Documentación técnica

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Documentación principal Tipo Título Opciones de formato Descargar la versión más reciente en inglés Fecha
* Hoja de datos TUSS4470 Transformer Drive Ultrasonic Sensor IC With Logarithmic Amplifier datasheet (Rev. A) PDF | HTML 19/05/2022
Nota sobre la aplicación Ultrasonic Sensing Basics (Rev. D) PDF | HTML 2/12/2021
Nota sobre la aplicación Ultrasonic Application Optimization and Usage Guide: TUSS4470 and TDC1000 PDF | HTML 18/01/2021
Artículo técnico Shrink your solution size with transformer-less ultrasonic ICs PDF | HTML 15/06/2020
Guía del usuario TUSS44x0 EVM for Ultrasonic Sensors User's Guide (Rev. A) 2/04/2020
Nota sobre la aplicación TUSS44x0 Software Development Guide PDF | HTML 17/03/2020
Nota sobre la aplicación Logarithmic Amplifier for Ultrasonic Sensor Signal Conditioning 13/03/2020
Libro electrónico E-book: An engineer’s guide to industrial robot designs 12/02/2020

Diseño y desarrollo

Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.

Placa de evaluación

BOOSTXL-TUSS4470 — Transductor ultrasónico de accionamiento directo TUSS4470 con módulo de evaluación LDO

El TUSS4470 EVM es un colectivo de BOOSTXL-TUSS4470 y MSP-EXP430F5529LP, que permite a los usuarios evaluar completamente el acondicionador de señal del sensor ultrasónico TUSS4470 y el controlador de puente H. La compatibilidad de los transductores se amplía a transductores abiertos o cerrados que (...)
Productos y hardware compatibles
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Soporte de software

SLDC021 — TUSS Generation III EVM GUI

Productos y hardware compatibles
Soporte de software

SLDC023 — TUSS44x0 Energia Library and Code Example

Productos y hardware compatibles
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
WQFN (RTJ) 20 Ultra Librarian
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