2 layers22.8 × 36 mm
Digirig mobile
softcomplex/Digirig-Mobile
Integrated digital modes interface for amateur radio
64 parts133GPL-3.0
2 layers60 × 50 mm
Cm108b eval
k0swe/cm108b-eval7Eval board for CM108B USB audio controller
- Size
- 60 × 50 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 43
- Nets
- 35
- Pads
- 165
- Tracks, vias
- 296, 50
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 22 Mar 2021
- Updated
- 24 Apr 2021
Overview
Cm108b eval is an open-source printed circuit board by k0swe, from the k0swe/cm108b-eval repository on GitHub, published under the CC-BY-4.0 licence. It is a 2-layer board of 60 × 50 mm with 43 parts on 35 nets, routed with 296 tracks and 50 vias.
It is built around the CM108B. Its parts include 13 capacitors, 11 resistors, 5 switches, 4 connectors and 2 diodes. It belongs with the audio and music and radio and wireless boards of this library.
Main components
1README
README.mdEvaluation board for the CMedia CM108B USB audio controller.
Parts
43| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 0Ω | Resistor_SMD:R_1210_3225Metric | R1, R2, R3, R21, R22 |
| 4 | 4.7μF | Capacitor_SMD:C_1210_3225Metric | C3, C5, C9, C12 |
| 3 | 100nF | Capacitor_SMD:C_1210_3225Metric | C1, C4, C6 |
| 2 | 100pF | Capacitor_SMD:C_1210_3225Metric | C7, C8 |
| 2 | 22Ω | Resistor_SMD:R_1210_3225Metric | R4, R5 |
| 2 | 330Ω | Resistor_SMD:R_1210_3225Metric | R8, R9 |
| 2 | 470μF | Vishay:CAPPM7343X430N | C10, C11 |
| 2 | Ferrite_Bead | Inductor_SMD:L_1210_3225Metric | L1, L2 |
| 1 | 1.2kΩ | Resistor_SMD:R_1210_3225Metric | R7 |
| 1 | 10KΩ | Resistor_SMD:R_Array_Concave_4x0402 | RN1 |
| 1 | 10μF | Capacitor_SMD:C_1210_3225Metric | C21 |
| 1 | 1μF | Capacitor_SMD:C_1210_3225Metric | C13 |
| 1 | 2.2kΩ | Resistor_SMD:R_1210_3225Metric | R6 |
| 1 | 3V3 | TestPoint:TestPoint_Pad_D1.0mm | TP3 |
| 1 | 5V | TestPoint:TestPoint_Pad_D1.0mm | TP2 |
| 1 | CM108B | Package_QFP:LQFP-48_7x7mm_P0.5mm | IC1 |
| 1 | GND | TestPoint:TestPoint_Pad_D2.0mm | TP1 |
| 1 | Logo_Open_Hardware_Small | Symbol:OSHW-Logo2_9.8x8mm_SilkScreen | LOGO1 |
| 1 | MIC | Connector_Audio:Jack_3.5mm_CUI_SJ-3524-SMT_Horizontal | J3 |
| 1 | MUTE_PLAY | Omron:SW_SPST_Omron_B3FS-100xP | SW2 |
| 1 | MUTE_REC | Omron:SW_SPST_Omron_B3FS-100xP | SW1 |
| 1 | OPER | LED_SMD:LED_0603_1608Metric | D1 |
| 1 | RADIO_DATA | Connector_JST:JST_PH_B3B-PH-SM4-TB_1x03-1MP_P2.00mm_Vertical | J20 |
| 1 | REC_MUTE | LED_SMD:LED_0603_1608Metric | D2 |
| 1 | SPKR | Connector_Audio:Jack_3.5mm_CUI_SJ-3524-SMT_Horizontal | J2 |
| 1 | SW_DIP_x03 | Wurth:416131160803 | SW5 |
| 1 | USB_B_Micro | CUI:UJ2-MIBH-4-SMT | J1 |
| 1 | VOL_DN | Omron:SW_SPST_Omron_B3FS-100xP | SW3 |
| 1 | VOL_UP | Omron:SW_SPST_Omron_B3FS-100xP | SW4 |
Questions
How big is the Cm108b eval PCB?
It measures 60 × 50 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Cm108b eval use?
43 parts, built around the CM108B. 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 Cm108b eval KiCad files?
From the k0swe/cm108b-eval repository on GitHub, at the commit this page was made from: the board is cm108b-eval.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Cm108b eval design in my own project?
Its repository publishes it under the CC-BY-4.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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