TUSS4440 Datasheet | Texas Instruments

Product Folder Order Now Technical Documents Tools & Software Support & munity SLDS250 - DECEMBER 2019 TUSS4440 Transformer Drive Ultrasonic Sensor IC With Logarithmic Amplifier 1 Features - 1 Integrated driver for transformer driven transducers and receiver stage with analog output for ultrasound applications - 86-d B 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 m A (typical) - Sleep mode: 220 µA (typical) - Configurable drive stage: - plimentary 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 parator output on OUT3 pin - Programmable VOUT threshold crossing on OUT4 pin - Serial Peripheral Interface (SPI) for configuration by microcontroller (MCU) 2 Applications - Position sensor - Level...