4 layers101.6 × 101.6 mm
2 layers127 × 90 mm
Radio usb
SP8EBC/radio-usb-interface3USB <--> Land Mobile Radio interace with full ground isolation on 2way audio and PTT control
- Size
- 127 × 90 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 225
- Nets
- 229
- Pads
- 752
- Tracks, vias
- 3,475, 385
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 13 Feb 2024
- Updated
- 5 Mar 2025
Overview
Radio usb is an open-source printed circuit board by SP8EBC, from the SP8EBC/radio-usb-interface repository on GitHub. It is a 2-layer board of 127 × 90 mm with 225 parts on 229 nets, routed with 3,475 tracks and 385 vias.
It is built around the AP22814AW5, TLP2662(F) and 24LC04B/P, with the 74AHCT1G04GV, AP2171WG and AT93C46D-PU among its other parts. Its parts include 70 resistors, 63 capacitors, 16 ICs, 10 diodes and 10 connectors. It belongs with the radio and wireless boards of this library.
Main components
12
AP22814AW5
SOT-25-40℃~+85℃ 1 2.7V~5.5V 3A 50mΩ Active High、Active Low High Side Switch Output discharge function、Soft-start、Under-voltage lockout、Reverse voltage protection、Overcurrent Protection、Over temperature protection、Short-Circuit Protection、Reverse current blocking SOT-25 Power Distribution Switches ROHSDiodes IncorporatedPower Distribution Switches
TLP2662(F)
DIP-8-40℃~+125℃ 1.55V 10Mbps 2 2.7V~5.5V 20mA 25kV/us 25mA 5V 5kV 5mA 6V 75ns 75ns 85mW DC DIP-8 Logic Output Optoisolators ROHSToshibaLogic Output Optoisolators24LC04B/P
PDIP-8-40℃~+85℃ 1,000,000 cycles 2.5V~5.5V 200 Years 400kHz 4Kbit 5ms I2C PDIP-8 EEPROM ROHSMicrochip TechnologyEEPROM74AHCT1G04GV
SOT-23-5L-40℃~+125℃ 1 1uA 2V 3.7V 4.5V~5.5V 4ns@5V,50pF 550mV 74AHCT 800mV 8mA 8mA SOT-23-5L Inverters ROHSMDDInvertersAP2171WG
SOT-25-5-40℃~+85℃ 1 1A 2.7V~5.5V 95mΩ Active High High Side Switch Overcurrent Protection(OCP)、Overtemperature protection (OTP) SOT-25-5 Power Distribution Switches ROHSDiodes IncorporatedPower Distribution SwitchesAT93C46D-PU
PDIP-8-40℃~+85℃ 1,000,000 cycles 1.8V~5.5V 100 Years 1Kbit 2MHz 5ms Built-in power-on reset (POR)、Built-in write enable latch (WEL) SPI PDIP-8 EEPROM ROHSMicrochip TechnologyEEPROM
FT2232HL
QFP64Dual High Speed USB to Multipurpose UART/FIFO ICFTDIUncategorised
BC846C
SOT-23-55℃~+150℃ 1 NPN 100MHz 100mA 300mW 5uA 600mV 65V 6V 800 NPN SOT-23 Bipolar (BJT) ROHSFOSANBipolar (BJT)
RB751V40T1G
SOD-323-40℃~+125℃ 1 Independent 200mA 30mA 370mV@1mA 40V 500nA@30V SOD-323 Schottky Diodes ROHSFUXINSEMISchottky Diodes
A6H-4101
SMD-20℃~+70℃ 24V 25mA 4 SPST SMD DIP Switches ROHSOmronDIP Switches15EDGRC-3.5-03P-14
TH-3P,P=3.5mmTH-3P,P=3.5mm New Arrivals ROHSDEGSONUncategorised
1N4148W
SOD-123150mA 1A 1V@50mA 1uA@75V 400mW 4ns 75V Independent SOD-123 Switching Diodes ROHSSTMicroelectronicsSwitching Diodes
README
README.mdAn USB interface between PC/RPi/ThinClient and any Land Mobile 2way Radio
Features:
- Single USB connection to the PC.
- Integrated USB 2.0 hub.
- Integrated USB audio codec IC (Texas Instruments PCM2900) detected as a regular sound card.
- Integrated double USB-UART controller (ftdi FT2232H) to control PTT and CarrierSense/COR/ChannelBusy lines.
- Ground Separated RS232 for communication with the radio using CAT/IV-C or simmilar protocol
- Ground Separated audio lines
- Spare 2 USB ports exposed from the hub for connecting external devices.
Parts
225| Qty | Value | Footprint | References |
|---|---|---|---|
| 18 | 100n | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C4, C10, C12, C14, C17, C21, C22, C25, C26, C34, C35, C36, C39, C41, C47 +2 |
| 13 | 10k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R16, R18, R19, R23, R38, R39, R49, R51, R52, R61, R62, R67, R68 |
| 12 | 10u | Capacitor_Tantalum_SMD:CP_EIA-3216-18_Kemet-A_Pad1.58x1.35mm_HandSolder | C8, C11, C13, C37, C38, C48, C49, C50, C54, C56, C60, C61 |
| 7 | 2k2 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R29, R31, R40, R41, R50, R56, R63 |
| 6 | 100k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R4, R6, R8, R13, R14, R15 |
| 6 | 18p | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C2, C5, C30, C31, C51, C52 |
| 6 | 1u | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C6, C9, C27, C43, C45, C46 |
| 6 | 22 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R11, R12, R42, R43, R46, R48 |
| 6 | 680 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R27, R28, R32, R33, R79, R80 |
| 5 | 22u | Capacitor_Tantalum_SMD:CP_EIA-3216-18_Kemet-A_Pad1.58x1.35mm_HandSolder | C16, C18, C20, C23, C42 |
| 4 | 100n | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C24, C29, C32, C33 |
| 4 | 33 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R22, R24, R26, R30 |
| 4 | 620 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R2, R5, R57, R59 |
| 4 | BC846C | Package_TO_SOT_SMD:SOT-23 | Q1, Q2, Q3, Q4 |
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3 | H1, H2, H3, H4 |
| 4 | RB751V40T1G | Diode_SMD:D_SOD-323_HandSoldering | D17, D18, D19, D20 |
| 3 | 1u | Inductor_SMD:L_0805_2012Metric_Pad1.15x1.40mm_HandSolder | L1, L4, L6 |
| 3 | 4u7 | Inductor_SMD:L_1210_3225Metric_Pad1.42x2.65mm_HandSolder | L2, L3, L5 |
| 3 | 620 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R35, R36, R37 |
| 3 | DNP | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R3, R7 |
| 3 | PC817 | Package_DIP:SMDIP-4_W7.62mm | U18, U20, U21 |
| 2 | 10k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R17, R78 |
| 2 | 12MHz | Crystal:Crystal_SMD_Abracon_ABM8G-4Pin_3.2x2.5mm | Y2, Y3 |
| 2 | 12k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R10, R44 |
| 2 | 16R | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R58, R60 |
| 2 | 220u | Capacitor_THT:CP_Radial_D6.3mm_P2.50mm | C63, C64 |
| 2 | 22n | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C55, C57 |
| 2 | 330 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R65, R66 |
| 2 | 4u7 | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C58, C59 |
| 2 | A6H-4101 | Button_Switch_SMD:SW_DIP_SPSTx04_Slide_Copal_CHS-04B_W7.62mm_P1.27mm | SW4, SW5 |
| 2 | ACJS-MHDRM | AV:Jack_6.35mm_ACJS-MHDRM | J11, J12 |
| 2 | AP22814AW5 | Package_TO_SOT_SMD:SOT-23-5 | U4, U5 |
| 2 | CRIYCHLEY9000 | paratnc_cp:NORMAL | U19, U22 |
| 2 | Conn_Coaxial | AV:rca_cliff_F68371 | J9, J10 |
| 2 | LED | LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D15, D16 |
| 2 | SW_SPDT | switches_spdt_dpdt:Alps_SSSS213000 | SW2, SW7 |
| 2 | TLP2662 | Package_DIP:DIP-8_W7.62mm | U11, U12 |
| 1 | +12V | TestPoint:TestPoint_Pad_D2.0mm | TP16 |
| 1 | +12V_FLG | TestPoint:TestPoint_Pad_D1.0mm | TP1 |
| 1 | +2V5 | TestPoint:TestPoint_Pad_D2.0mm | TP17 |
| 1 | +5V | TestPoint:TestPoint_Pad_D2.0mm | TP18 |
| 1 | +5VP_OK | TestPoint:TestPoint_Pad_D2.0mm | TP3 |
| 1 | 0 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R54 |
| 1 | 0 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R69 |
| 1 | 0R68 | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R20 |
| 1 | 100u | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C15 |
| 1 | 100u | Capacitor_Tantalum_SMD:CP_EIA-3528-21_Kemet-B_Pad1.50x2.35mm_HandSolder | C19 |
| 1 | 10k | Resistor_THT:R_Array_SIP5 | RN1 |
| 1 | 10u | Capacitor_Tantalum_SMD:CP_EIA-6032-28_Kemet-C_Pad2.25x2.35mm_HandSolder | C3 |
| 1 | 10u | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C62 |
| 1 | 15EDGRC-3.5-03P-14 | Connector_Phoenix_MC:PhoenixContact_MC_1,5_3-G-3.5_1x03_P3.50mm_Horizontal | J3 |
| 1 | 1882.2781 | LED:LED_MENTOR_1882 | D12 |
| 1 | 1M | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R55 |
| 1 | 1N4148W | Diode_SMD:D_SOD-123 | D7 |
| 1 | 1k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R47 |
| 1 | 1k5 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R45 |
| 1 | 22k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R81 |
| 1 | 24LC04 | Package_DIP:DIP-8_W7.62mm | U2 |
| 1 | 24MHz | Crystal:Crystal_SMD_Abracon_ABM8G-4Pin_3.2x2.5mm | Y1 |
| 1 | 2R2 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R53 |
| 1 | 3u3 | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C28 |
| 1 | 4069 | Package_SO:TSSOP-14_4.4x5mm_P0.65mm | U9 |
| 1 | 470u | Capacitor_THT:CP_Radial_D8.0mm_P3.50mm | C40 |
| 1 | 4k7 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R9 |
| 1 | 74AHCT1G04 | Package_TO_SOT_SMD:SOT-23-5_HandSoldering | U16 |
| 1 | AP2171W | Package_TO_SOT_SMD:SOT-23-5 | U10 |
| 1 | APX809_810-xxSA | Package_TO_SOT_SMD:SOT-23_Handsoldering | U3 |
| 1 | AT93C46D | Package_DIP:DIP-8_W7.62mm | U14 |
| 1 | AUD_OUT_L | TestPoint:TestPoint_Pad_D2.0mm | TP10 |
| 1 | AUD_OUT_R | TestPoint:TestPoint_Pad_D2.0mm | TP11 |
| 1 | B130-13-F | Diode_SMD:D_SMA | D4 |
| 1 | BC856 | Package_TO_SOT_SMD:SOT-23 | Q5 |
| 1 | Barrel_Jack | Connector_BarrelJack:BarrelJack_GCT_DCJ200-10-A_Horizontal | J1 |
| 1 | DB9_Female | Connector_Dsub:DSUB-9_Female_Horizontal_P2.77x2.84mm_EdgePinOffset4.94mm_Housed_MountingHolesOffset7.48mm | J4 |
| 1 | DB9_Male | Connector_Dsub:DSUB-9_Male_Horizontal_P2.77x2.84mm_EdgePinOffset4.94mm_Housed_MountingHolesOffset7.48mm | J8 |
| 1 | DNP | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R70 |
| 1 | DNP | LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D5 |
| 1 | EDAC 690-008-221-904 | Connector_USB:USB_A_Wuerth_61400826021_Horizontal_Stacked | J7 |
| 1 | EEP_EN | Connector_PinHeader_2.54mm:PinHeader_2x02_P2.54mm_Vertical | J5 |
| 1 | FT2232HL | Package_QFP:LQFP-64_10x10mm_P0.5mm | U17 |
The 199 most common of 225 parts.
Questions
How big is the Radio usb PCB?
It measures 127 × 90 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Radio usb use?
225 parts, built around the AP22814AW5, TLP2662(F), 24LC04B/P and 74AHCT1G04GV. 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 Radio usb KiCad files?
From the SP8EBC/radio-usb-interface repository on GitHub, at the commit this page was made from: the board is radio-usb.kicad_pcb and its schematic radio-usb.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Radio usb design in my own project?
Its repository states no licence, so its author keeps all rights: ask SP8EBC before reusing the design.
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