Artix 7 based ultrasound microphone array Adapter

This is a small farewell project to my Ultrasound Microphone Array Adapter thesis project. To support a higher frequency bandwidth with high dynamic range an fpga is used.

Hardware features

• FPGA: XC7A100T-2CSG324I
• External memory: 125 MByte DDR2 RAM, 16 MByte QSPI Flash
• Digital Connections: 1x USB-C for programming and debugging, 1x USB-C up to 480 MBit/s for transfering data
• ADC: TAA3020 2 Channel Audio-ADC up to 768 kHz sampling Frequency
• Pre-amplifier stage: 36 dB
• Microphones: 2x STMicroelectronics IMP23ABSUTR 2.2 mm gap to each other

Applications:

• Microphone Arrays
• Ultrasound
• Bat detection and localisation

Absolute Maximum Ratings

• Supply Voltage: +5V0 to +5V5 (recommended: +5V0) USB feeded

Manufacturing Information

• Length = 50mm, Width = 50mm, Thickness = 1.2 mm
• Layers = 8
• Min. Via Hole diameter = 0.3 mm
• Via-Type: Epoxy Filled and Capped
• Impedance Control: JLC08121H-3313
• Surface Finish: ENIG
• Material Type: FR-4 TG155

Progress

• Schematic design: complete
• Layouting: complete
• Manufacturing & assembly: In progress
• Bring-Up: In progress

I make no guarantees as to device funtionality. Please review the components, schematics carefully before production.