2 layers43.9 × 27.7 mm
2 layers27.2 × 40.8 mm
Deringöz TUSS4470
hasankn/TUSS4470This repository contains the hardware design, firmware, and documentation for a high-performance ultrasonic sonar system built around the Texas Instruments TUSS4470 ultrasonic transducer driver and signal conditioner.
- Size
- 27.2 × 40.8 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 19
- Nets
- 21
- Pads
- 65
- Tracks, vias
- 141, 2
- Pours
- 5
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 24 Jul 2026
- Updated
- 24 Jul 2026
Overview
Deringöz TUSS4470 is an open-source printed circuit board by hasankn, from the hasankn/TUSS4470 repository on GitHub. It is a 2-layer board of 27.2 × 40.8 mm with 19 parts on 21 nets, routed with 141 tracks and 2 vias.
It is built around the TJ7550AGF. Its parts include 8 capacitors, 3 connectors, 2 ICs and 1 diode.
Main components
1README
Hardware/README.md🌊 TUSS4470 Based Ultrasonic Sonar & Distance Measurement System
This repository contains the hardware design, firmware, and documentation for a high-performance ultrasonic sonar system built around the Texas Instruments TUSS4470 ultrasonic transducer driver and signal conditioner.
📌 Project Overview
The TUSS4470 is a highly integrated ultrasonic sensor driver and analog front-end (AFE) designed for time-of-flight (ToF) measurement applications. This project utilizes the TUSS4470 to drive ultrasonic transducers in transformer/direct-drive modes, process weak incoming echo signals via its internal Variable Gain Amplifier (VGA) and Logarithmic Amplifier, and output an analog envelope or digital threshold detection for distance processing.
Targeted for underwater navigation, obstacle avoidance (AUV/ROV), and precise echo-ranging systems.
✨ Key Features
- Flexible Transducer Drive: Supports active driving with adjustable burst frequencies (e.g., 40 kHz – 400 kHz) and programmable pulse counts.
- Integrated Analog Front-End (AFE):
- Variable Gain Amplifier (VGA) with programmable gain profiles via SPI.
- Bandpass filtering and logarithmic envelope detection for wide dynamic range.
- SPI Communication: Complete run-time control over internal registers, diagnostic readouts, threshold settings, and gain curves.
- Dual Echo Detection:
- Analog Mode: Raw envelope signal output for high-precision ADC sampling / FFT processing.
- Digital Mode: Interrupt-driven threshold comparator output (
OUT4/ zero-crossing) for direct ToF microsecond timing.
- Low Noise & Compact Design: Optimized PCB layout to minimize high-frequency switching noise on weak echo signals.
📐 System Architecture
+-------------------+ SPI / GPIO +-------------------+
| | <--------------------> | |
| Microcontroller | Burst Trigger (IO) | TUSS4470 | <===> Ultrasonic Transducer
| (STM32 / ESP32) | ---------------------> | Driver / AFE IC | (Water / Air)
| | <--------------------- | |
+-------------------+ Echo Envelope / OUT +-------------------+Parts
19| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | >5V 4.7nF | Capacitor_SMD:C_0805_2012Metric | C1, C2, C5 |
| 2 | 1uF | Capacitor_SMD:C_0805_2012Metric | C7, C8 |
| 1 | 10Ω | Resistor_SMD:R_1206_3216Metric | RPWR1 |
| 1 | 1N4001 | Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal | D1 |
| 1 | 200Ω , 1/4W min | Resistor_SMD:R_1206_3216Metric | RINP1 |
| 1 | 40V 2uF | Capacitor_SMD:C_0805_2012Metric | CPWR2 |
| 1 | 40V, 330pF | Capacitor_SMD:C_0805_2012Metric | C6 |
| 1 | 50V 100nF | Capacitor_SMD:C_0805_2012Metric | CPWR1 |
| 1 | 5V 100pF | Capacitor_SMD:C_0805_2012Metric | C4 |
| 1 | 5V 2nF | Capacitor_SMD:C_0805_2012Metric | C3 |
| 1 | >5V 10nF | Capacitor_SMD:C_0805_2012Metric | CVDD1 |
| 1 | Configration Conn | Connector_PinHeader_2.54mm:PinHeader_1x09_P2.54mm_Horizontal | J3 |
| 1 | Main Power Conn | Connector_AMASS:AMASS_XT60-M_1x02_P7.20mm_Vertical | J2 |
| 1 | TJ7550AGF | Package_TO_SOT_SMD:SOT-89-3 | U2 |
| 1 | TUSS4470TRTJR | TUSS4470TRTJR:QFN-20_L4.0-W4.0-P0.50-TL-EP2.7 | U1 |
| 1 | ULSTRASONIC Sens. Conn | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Horizontal | J1 |
Questions
How big is the Deringöz TUSS4470 PCB?
It measures 27.2 × 40.8 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Deringöz TUSS4470 use?
19 parts, built around the TJ7550AGF. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Deringöz TUSS4470 KiCad files?
From the hasankn/TUSS4470 repository on GitHub, at the commit this page was made from: the board is Hardware/Deringöz_TUSS4470.kicad_pcb and its schematic Hardware/Deringöz_TUSS4470.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Deringöz TUSS4470 design in my own project?
Its repository states no licence, so its author keeps all rights: ask hasankn before reusing the design.
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