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Ultrasonic Receiver . Preliminary Design Review Team F : Zach Garber, Jason Jonas, Scott Clausen, and Jonathan Gabler. Functional Decomposition. Interface Document. Tech Specs. Amplifier – Burr-Brown OPA228

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ultrasonic receiver
Ultrasonic Receiver

Preliminary Design Review

Team F : Zach Garber, Jason Jonas, Scott Clausen, and Jonathan Gabler

tech specs
Tech Specs

Amplifier – Burr-Brown OPA228

  • Gain – The high open-loop gain of this amplifier is 160 dB and a minimum closed-loop gain of 5 V/V.
  • Gain Flatness – The gain flatness is ± 1 dB.
  • Bandwidth – The bandwidth of this amplifier is 33 MHz.
  • DC Voltage – This amplifier can operate within a range of ±2.5 V to  ±18 V input.
  • CMRR – The amplifier has a CMRR of 138 dB.

Microwave Mixer – Philips SA602A

  • 3rd Order Intercept – The 3rd order intercept point is -13 dBm.
  • Noise Figure – The mixer has a noise figure of less than 4.7 dB.
  • Supply Voltage – This mixer operates on a supply voltage between 4.5 V to 8 V.
  • Bandwidth – The mixer can operate up to 200 MHz.

Local Oscillator – Linear Technology LTC6903

  • Carrier Frequency – The carrier frequency of this local oscillator is 1 kHz to 68 MHz.
  • Supply Voltage – This oscillator operates on a supply voltage between 2.7 V to 5.5 V.
  • Output Resistance – The oscillator has an output resistance of 45 Ω.
  • Output Voltage – The oscillator has an output voltage of 5.3 V.

Low-pass Filter – Maxim MAX7400

  • Kind – This filter is a low-pass filter.
  • Type – This type of filter is an 5th-order low-pass butterworth filter.
  • Input Power – The operating DC supply voltage is 5 V.
  • Corner Frequency – The filter has a corner frequency of up to 15 kHz.
  • Distortion – This filter has a total harmonic distortion plus noise of less than -82 dB.
  • Supply Voltage – The filter operates on a supply voltage of 4.5 V to 5.5 V.
testing and evaluation
Testing and Evaluation
  • Each functional element first implemented on PCB
  • Connect whole system piece by piece
arduino
Arduino
  • Program variable resistor
  • Program local oscillator
  • Generate a 35 kHz sine wave
  • GPS clock
  • Data storage
  • Output to USB
risk mitigation
Risk Mitigation

Signal compatibility

  • Read all datasheets carefully

Arduino coding

    • Watch tutorials and start coding
      • Reach out for help from classmates with more experience

Custom PCB

    • Start the acclimation process soon
    • Submit design early
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