2 layers
BinauralMic
LeftistTachyon/BinauralMic
Design files I used to create my homemade binaural microphone
59 parts
4 layers45 × 34.2 mm
BinauralMic old
LeftistTachyon/BinauralMicDesign files I used to create my homemade binaural microphone
- Size
- 45 × 34.2 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 69
- Nets
- 41
- Pads
- 182
- Tracks, vias
- 269, 183
- Pours
- 29
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 13 Sep 2024
- Updated
- 8 Jul 2025
Overview
BinauralMic old is an open-source printed circuit board by LeftistTachyon, from the LeftistTachyon/BinauralMic repository on GitHub. It is a 4-layer board of 45 × 34.2 mm with 69 parts on 41 nets, routed with 269 tracks and 183 vias.
It is built around the TL972QDRQ1, 74LVC1G08Z and MIC5504-3.3YM5, with the PESD5V5C1BLYL, XFL2010-823MEC and LTST-C193KRKT-2A among its other parts. Its parts include 24 capacitors, 20 resistors, 4 ICs, 4 diodes and 3 connectors.
Main components
8
TL972QDRQ1
SOIC-8-40℃~+125℃ 1.4mA 12MHz 150nA 1mV 2 2.7V~12V 2.8mA 200nA 4nV/√Hz@100kHz 5V/us 5uV/℃ 85dB Rail-to-rail output SOIC-8 Operational Amplifier ROHSTexas InstrumentsOperational Amplifier
74LVC1G08Z
SOT-553-5-40℃~+125℃ 1 1.65V~5.5V 1.7V、2V 2 2.4V、3.8V 32mA 32mA 4ns@5V,50pF 550mV、800mV 700mV、800mV 74LVC Series AND Gate SOT-553-5 Logic Gates ROHSDiodes IncorporatedLogic Gates
MIC5504-3.3YM5
SOT-23-5-40℃~+125℃@(Tj) 1 120uVrms 15uA 180mV@(300mA) 3.3V 300mA 5.5V 75dB@(1kHz) Fixed Over Temperature Protection、Enable Positive SOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTECH PUBLICVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
PESD5V5C1BLYL
DFN1006-20.245pF 1nA 5.4V 5.5V 6.5A@8/20us 8V Bidirectional ESD IEC 61000-4-2、IEC 61000-4-5 DFN1006-2 ESD and Surge Protection (TVS/ESD) ROHSNexperiaUncategorisedXFL2010-823MEC
SMD,2x1.9mm160mA 185mA 5.81Ω 82uH AEC-Q200 Magnetic Shielded Inductor ±20% SMD,2x1.9mm Power Inductors ROHSCoilcraftPower Inductors
LTST-C193KRKT-2A
0603-55℃~+85℃ 1.6V~2.2V 1.8mcd~11.2mcd 130° 629nm 639nm Red Water Clear 0603 LED Indication - Discrete ROHSLite-OnLED Indication - Discrete
PESD2USB3UVT-QR
SOT-23ESD And Surge Protection (TVS/ESD)Nexperia
USB4105-GF-A-120
SMD-40℃~+85℃ 1 16P 48V 5A Black Female Type-C USB 2.0 SMD USB Connectors ROHSGlobal Connector Technology (GCT)USB Connectors
README
README.mdTachi's Homemade Binaural Mic
More to come soon!
(I barely have a schematic atm lol)
Parts
69| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | LOGO | LOGO | G***, G***, G***, G***, G***, G***, G***, G*** |
| 6 | 10u | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C17, C18, C19, C20, C23, C24 |
| 5 | 4.7u | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C8, C9, C12, C14, C15 |
| 4 | 100k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R8, R9, R10, R15 |
| 4 | 1M | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R4, R11, R17, R21 |
| 4 | 22u | Capacitor_SMD:C_1210_3225Metric_Pad1.33x2.70mm_HandSolder | C1, C2, C5, C6 |
| 3 | 1u | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C3, C4, C11 |
| 2 | 0.1u | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C10, C16 |
| 2 | 16p | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C21, C22 |
| 2 | 18k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R6, R13 |
| 2 | 22 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R19, R20 |
| 2 | 49.9 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R7, R14 |
| 2 | 5.1k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R2, R3 |
| 2 | 5.9k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R5, R12 |
| 2 | 68p | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C7, C13 |
| 2 | Conn_01x02_Pin | Connector_PinHeader_2.00mm:PinHeader_1x02_P2.00mm_Vertical | J3, J4 |
| 2 | PESD5V5C1BL | Diode_SMD:D_SOD-882 | D2, D5 |
| 2 | XFL2010-823ME | Inductor_SMD:L_Coilcraft_XFL2010 | L1, L2 |
| 1 | 1.5k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R16 |
| 1 | 5.6k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R18 |
| 1 | 74LVC1G08 | Package_TO_SOT_SMD:SOT-23-5_HandSoldering | U3 |
| 1 | ABLS-12.000MHZ-20-D-3-H-T | binauralmic:ABLS | Y1 |
| 1 | LTST-C193KRKT-2A | LED_SMD:LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D4 |
| 1 | MIC5504-3.3YM5 | Package_TO_SOT_SMD:SOT-23-5_HandSoldering | U1 |
| 1 | PCM2903CDBR | binauralmic:SOP65P780X200-28N | IC1 |
| 1 | PESD2USB3UVT-QR | Package_TO_SOT_SMD:SOT-23-3 | D3 |
| 1 | TL972QDRQ1 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U2 |
| 1 | USB4105-GF-A-120 | Connector_USB:USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J2 |
The 66 most common of 69 parts.
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Questions
How big is the BinauralMic old PCB?
It measures 45 × 34.2 mm and has 4 copper layers, 1.6 mm thick.
What parts does the BinauralMic old use?
69 parts, built around the TL972QDRQ1, 74LVC1G08Z, MIC5504-3.3YM5 and PESD5V5C1BLYL. 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 BinauralMic old KiCad files?
From the LeftistTachyon/BinauralMic repository on GitHub, at the commit this page was made from: the board is BinauralMic_old.kicad_pcb and its schematic BinauralMic.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the BinauralMic old design in my own project?
Its repository states no licence, so its author keeps all rights: ask LeftistTachyon before reusing the design.