SONAR receiver path sub-system reference design using an 8 channel analog front end

The TIDA-00419 TI Design is a demonstration of a SONAR receive path sub-system using the integrated analog front end (AFE) AFE5809. The AFE5809 features 8 channels of analog signal conditioning  (LNA+VCAT+PGA) and Digital Processing (ADC+Digital Demodulator) that brings a high level of system receive path integration and enables high-performance echo-location imaging for high-end SONAR systems. This reference design demonstrates this SONAR sub-system with a schematic modified from the AFE5809EVM. The test data included is taken by combining the full AFE5809EVM with the TSW1400EVM FPGA Capture Card and their respective Software GUIs in order simulate a complete receive chain solution capable of high-performance measurement.

Features:

• Capable of measuring SONAR signals from 30kHz-32.5MHz
• Digital Demodulator for envelope detection and beamforming
• Variable Sample frequency 10-65MSPS with external clock capability
• Variable Gain settings with a -4dB to 54dB range
• Variable input impedance settings
• This design is tested and provides design reference materials including Schematics, and BOM.

Parts include:

AFE5809              Fully-Integrated, 8-Ch Ultrasound Analog Front End w/ Passive CW Mixer and Digital I/Q Demodulation 

LMH6629              Ultra-Low Noise, High-Speed Operational Amplifier with Shutdown 

OPA211                1.1nV/rtHz Noise, Low-Power, Precision Operational Amplifier 

SN74LVC1G06      Single Inverter Buffer/Driver With Open-Drain Output 

THS4131              Fully Differential Input/Output Low Noise Amplifier 

TPS796                 Ultralow-Noise, High PSRR, Fast, RF, 1-A Low-Dropout Linear Regulators 

Learn more by downloading the reference design below