TI HealthTech Engineering components for life. AFE5809: Analog Front End for Ultrasonic Applications Imaging Introduction Purpose − To introduce TI’s AFE5809 for Ultrasonic Rx path Objective − To discuss AFE5809’s features and benefits − − − − − Content Ultrasound vs Ultrasonic Sonar applications Non-destructive testing applications AFE5809 Analog Front End for Ultrasonic Rx Why is the AFE5809 so great? Ultrasonic vs Ultrasound Ultrasonic refers to more than just Medical Ultrasound. Sonar It refers to any application that uses high frequency sound pulses or electromagnetic waves to measure distance, velocity, or material characteristics. NDT Basic operation and electronic components are similar, but frequencies, distances, measurement environments, and total number of channels can vary greatly. Sonar Applications Sonar: − Uses sound waves to measure or detect objects on or under the surface of the water. − Similar to medical ultrasound, beamforming is used and an array of receivers produces spatial differentiation. − Unlike medical ultrasound, lower frequency's and higher gain ranges are sometimes needed to measure very far distances. − Typical Sonar applications include: • Fish finders – lower channel count, smaller size • Deep water survey – longest distances • Military and Stealth applications Non-Destructive Testing (NDT) NDT: − Refers to a wide group of analysis techniques used to evaluate the properties of a material, component or system without causing damage − One type of NDT test is ultrasonic testing • Uses ultrasonic pulse waves launched into materials to detect internal flaws or characterize materials. − Has higher frequency and dynamic range requirements compared to medical ultrasound. − Typical NDT ultrasonic applications include: • Thickness measurement • Flaw detection • Stud finders Ultrasonics: Sonar / NDT Embedded processing Analog signal chain FET Driver Tx Buffer Amp Front End Transducer HV MUX Passive LPF Transmit Beamformer DAC Receive Beamformer T/R Switch LNA PGA VCA Mid Analog Front End Amp Stage Low Pass Filter Beamformer Control Unit Preprocessing Clocking ADC Back End CW (analog) Beamformer ADC B Mode Processing Spectral Doppler Processing Color/Power Doppler Processing Scan Conversion Post Processing Plug AC/DC Supply With Green Mode Controller AC Line System Power Supply Voltage Super. OS/UI Main Power Supply Audio Amp Common Interfaces Power LPW RS232 USB 1394 802.11 Backlight Touchscreen Memory Interfaces MMC/SDIO IDE/ATA AFE5809: AFE with Passive CW Mixer & Digital I/Q Demod Features Benefits • 8 CH AFE with LNA, VCAT, PGA, LPF, ADC, CW Mixer and integrated: • Digital I/Q demodulator • Continuous wave Doppler (CWD) • 14 bit ADC w/ 77 dBFS SNR. • Selectable power/noise combo’s to optimize system • 158mW/ch at 0.75nV/rtHz, 65MSPS • 99mW/ch at 1.1nV/rtHz, 40MSPS • 80mW/ch at CW Mode • Package: 15 mm x 9 mm, 135-BGA • Complete AFE for Ultrasound and Ultrasonic systems • Lowers interface rate, cost of FPGA • Measures blood flow velocity in Spectral Doppler systems • Best in-class noise levels for crisp image qualities. • Ability to fine-tune power consumption for portable systems Applications • • • • Ultrasound Imaging Non-destructive Testing Sonar Military Radar Samples: Now EVM: Now Production: Released! Why is the AFE5809 so great? What it is: Complete 8 ch front end integrating all of the components of a typical Ultrasound Receiver. Features and Benefits: Complete front end solution = easier design and lowered BOM cost Digital I/Q demodulation = reduced FPGA processing requirements Lowest noise and lowest power = highest image quality at lowest power Summary Complete 8 ch front end integrating all of the components of a typical reciever for ultrasonic applications such as Sonar or NDT. Features and Benefits include • Complete front end solution = easier design and lowered BOM cost • Digital I/Q demodulation = reduced FPGA processing requirements • Lowest noise and lowest power = highest image quality at lowest power To learn more or order samples or evaluation module please visit www.ti.com/product/AFE5809