2 layers45.3 × 24.5 mm
6 layers85 × 56 mm
Karnix ASB
Fabmicro-LLC/Karnix_ASB-25419Karnaugh Interactive Extendable ASIC Simulation Board AKA Karnix ASB-254
- Size
- 85 × 56 mm
- Copper layers
- 6
- Thickness
- 1.6 mm
- Parts
- 368
- Nets
- 430
- Pads
- 1,375
- Tracks, vias
- 5,158, 712
- Pours
- 6
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 3 Oct 2023
- Updated
- 6 Sep 2026
Overview
Karnix ASB is an open-source printed circuit board by Fabmicro-LLC, from the Fabmicro-LLC/Karnix_ASB-254 repository on GitHub. It is a 6-layer board of 85 × 56 mm with 368 parts on 430 nets, routed with 5,158 tracks and 712 vias.
It is built around the LAN8710AI-EZK, MAX487ECSA+ and LM258A, with the AD5328BRUZ, ADC128S052CIMT and DM3AT-SF-PEJM5 among its other parts. Its parts include 177 resistors, 101 capacitors, 26 diodes, 17 inductors and 13 ICs. It belongs with the FPGA and CPLD boards of this library.
Main components
12
LAN8710AI-EZK
QFN-32-EP(5x5)-40℃~+85℃ 1.6V~3.6V 10BASE-T、100BASE-TX 10Mbit/s、100Mbit/s MII、RMII PHY Transceiver QFN-32-EP(5x5) Ethernet Transceivers ROHSMicrochip TechnologyEthernet Transceivers
MAX487ECSA+
SOIC-80℃~+70℃ 1 1 250Kbps 4.75V~5.25V Transceiver SOIC-8 RS-485 / RS-422 ICs ROHSMaxim Integrated (Analog Devices)RS-485 / RS-422 ICs
LM258A
SOP-8-16V~16V -25℃~+85℃ 0V~32V 150nA 2 3nA 40mA 500uA 5mV 90dB SOP-8 Operational Amplifier ROHSSlkorOperational Amplifier
AD5328BRUZ
TSSOP-16-40℃~+125℃ 12 1LSB 2.5V~5.5V 400nA 8 8us Integrated buffer、Power-on reset、Power-down mode SPI、QSPI Voltage Buffer TSSOP-16 Digital to Analog Converters (DAC) ROHSAnalog DevicesDigital To Analog Converters (DACs)ADC128S052CIMT
TSSOP-16-40℃~+105℃ 12 1LSB 2.7V~5.25V 200kHz 20nA 3.2MHz~8MHz 73dB 8 No SAR SPI TSSOP-16 Analog to Digital Converters (ADC) ROHSTexas InstrumentsAnalog To Digital Converters (ADC)
DM3AT-SF-PEJM5
SMD-25℃~+85℃ 1.68mm Connector and Ejector MicroSD Card (TF Card) No Push-Push SMD SD Card / Memory Card Connector ROHSHirose ElectricSD Card / Memory Card ConnectorAT24C01C-SSHM-T
SOIC-8-40℃~+85℃ 1,000,000 cycles 1.7V~5.5V 100 Years 1Kbit 1MHz 5ms Hardware write protection function、Noise suppression function I2C SOIC-8 EEPROM ROHSMicrochip TechnologyEEPROM
FT2232D
LQFP48Dual USB UART / FIFO I.C.FTDIUncategorised
MT48LC32M16A2TG-75:C
54-TSOP II0℃~+70℃ 133MHz 3V~3.6V 512Mbit 54-TSOP II SDRAMMicron TechSDRAM
RS3236-2.5YF5
SOT-23-5-40℃~+85℃@(Tj) 1 2.5V 20uA 500mA 550mV@(300mA) 7.5V 70dB@(1kHz) 80uVrms Fixed Over Current Protection、Over Temperature Protection、Enable、Thermal Shutdown Positive SOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSJiangsu RUNIC TechVoltage Regulators - Linear, Low Drop Out (LDO) Regulators0.1UF 50V 5*11
插件,5x11mm1000hrs@105℃ 100nF 11mm 1A@100kHz 2mm 50V 5mm 插件,5x11mm Aluminum Electrolytic Capacitors - Leaded ROHSCXAluminum Electrolytic Capacitors - Leaded
PGB1010603NRHF
0603-65℃~+125℃ 0.06pF 1 150V 24V Bidirectional ESD IEC 61000-4-2 0603 ESD and Surge Protection (TVS/ESD) ROHSLittelfuseESD And Surge Protection (TVS/ESD)
README
Karnix_ASB-v2.0/README.md2026-09-01 (DONE)
- Сократить число портов АЦП и ЦАП до 2+2 (плюс аудио).
- Сагрегировать линии ЦАП и АЦП каждый в своем идином ращъеме JST 4пин.
- Добавить тактовый сигнал для NOR Flash памяти.
- Добавить разъем SD-карты (режим SPI).
- Перенести кнопки в другое место, высвободить место под USB type A.
- Добавить USB type A.
- Добавить SDRAM 64МБ.
- (-) Добавить сигнал LDAC на ЦАП.
Parts
368| Qty | Value | Footprint | References |
|---|---|---|---|
| 40 | 0.1uF/50V | Capacitor_SMD:C_0402_1005Metric | C32, C34, C35, C37, C38, C39, C40, C41, C43, C44, C47, C55, C56, C57, C58, C59 +24 |
| 32 | 10K/1% | Fabmicro:R_0402_1005Metric | R2, R14, R19, R41, R45, R46, R48, R49, R50, R51, R52, R56, R57, R58, R122, R152 +16 |
| 28 | 51R/1% | Fabmicro:R_0402_1005Metric | R10, R11, R12, R15, R16, R17, R18, R21, R22, R23, R24, R25, R26, R27, R28, R29 +12 |
| 19 | 4.7uF/6.3V | Capacitor_SMD:C_0402_1005Metric | C17, C18, C19, C20, C21, C22, C23, C24, C25, C26, C27, C28, C29, C30, C100, C103 +3 |
| 15 | 330R/1.2A | Inductor_SMD:L_0603_1608Metric | L3, L4, L5, L6, L7, L8, L9, L10, L11, L12, L13, L15, L16, L17, L23 |
| 15 | PGB1010603NRHF | Fuse:Fuse_0603_1608Metric | D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D24, D25, D28, D29 |
| 13 | 110R/1% | Fabmicro:R_0402_1005Metric | R55, R68, R69, R70, R71, R72, R73, R74, R75, R76, R77, R78, R155 |
| 13 | 49.9R/1% | Fabmicro:R_0402_1005Metric | R96, R97, R98, R99, R100, R110, R111, R112, R113, R114, R115, R116, R117 |
| 11 | 22R/1% | Fabmicro:R_0402_1005Metric | R126, R185, R186, R187, R188, R189, R190, R191, R192, R193, R194 |
| 9 | 22R/1% | Resistor_SMD:R_0402_1005Metric | R127, R128, R137, R138, R153, R166, R168, R180, R181 |
| 8 | 10K/1% | Resistor_SMD:R_0402_1005Metric | R104, R105, R108, R109, R171, R172, R179, R183 |
| 8 | 11K/1% | Resistor_SMD:R_0402_1005Metric | R123, R131, R135, R143, R149, R150, R151, R157 |
| 7 | 10uF/10V | Capacitor_SMD:C_0603_1608Metric | C10, C48, C82, C83, C85, C89, C90 |
| 7 | 22uF/10V | Capacitor_SMD:C_0805_2012Metric | C4, C11, C12, C42, C46, C65, C69 |
| 7 | 5.1K/1% | Resistor_SMD:R_0402_1005Metric | R37, R121, R154, R160, R162, R174, R176 |
| 6 | 1.5K/1% | Fabmicro:R_0402_1005Metric | R66, R118, R119, R120, R159, R161 |
| 6 | 1uF/16V | Fabmicro:C_0402_1005Metric | C8, C9, C14, C15, C64, C87 |
| 6 | DNM | Fabmicro:R_0402_1005Metric | R84, R85, R89, R90, R94, R95 |
| 6 | FYLS-0603PGC | LED_SMD:LED_0603_1608Metric | D1, D2, D3, D4, D5, D6 |
| 5 | 22K/1% | Resistor_SMD:R_0402_1005Metric | R129, R133, R141, R145, R156 |
| 4 | 0.01uF/50V | Capacitor_SMD:C_0402_1005Metric | C13, C16, C74, C78 |
| 4 | 0R | Resistor_SMD:R_0402_1005Metric | R163, R164, R165, R167 |
| 4 | 15pF/50V | Fabmicro:C_0402_1005Metric | C50, C51, C52, C53 |
| 4 | 220R/1% | Fabmicro:R_0402_1005Metric | R1, R7, R13, R20 |
| 4 | LM258A | Package_SO:SO-8_3.9x4.9mm_P1.27mm | U12, U14, U15, U16 |
| 4 | MountingHole | Fabmicro:MountingHole_3.2mm_M3_ISO7380_NoPad | H1, H2, H3, H4 |
| 3 | 0805L100WR | Fuse:Fuse_0805_2012Metric | F1, F2, F3 |
| 3 | 510R/1% | Fabmicro:R_0402_1005Metric | R53, R54, R79 |
| 3 | 51R/1% | Resistor_SMD:R_0402_1005Metric | R125, R139, R148 |
| 3 | DMN3730 | Fabmicro:SOT-23 | Q2, Q3, Q4 |
| 2 | 0.1uF/50V | Fabmicro:C_0402_1005Metric | C75, C104 |
| 2 | 100uF/25V | Fabmicro:CP_EIA-7343-43_Kemet-X | C3, C5 |
| 2 | 27pF/50V | Fabmicro:C_0402_1005Metric | C101, C102 |
| 2 | 330R/1% | Fabmicro:R_0402_1005Metric | R81, R103 |
| 2 | 75R/1% | Fabmicro:R_0402_1005Metric | R101, R102 |
| 2 | CRS08 | Fabmicro:D_SOD-123F | D21, D22 |
| 2 | STPS2L40AF | Fabmicro:D_SMA_FLAT | D8, D23 |
| 1 | 0.47uF/50V | Capacitor_SMD:C_0603_1608Metric | C49 |
| 1 | 1.5K/1% | Resistor_SMD:R_0402_1005Metric | R182 |
| 1 | 10.5K/1% | Fabmicro:R_0402_1005Metric | R40 |
| 1 | 1000pF/100V | Capacitor_SMD:C_1206_3216Metric | C54 |
| 1 | 10uH/2.3A | Fabmicro:IHLP-2020 | L1 |
| 1 | 12.1K/1% | Fabmicro:R_0402_1005Metric | R80 |
| 1 | 120R/1% | Resistor_SMD:R_0805_2012Metric | R106 |
| 1 | 15K/1% | Fabmicro:R_0402_1005Metric | R43 |
| 1 | 18K/1% | Fabmicro:R_0402_1005Metric | R44 |
| 1 | 1K/1% | Fabmicro:R_0402_1005Metric | R63 |
| 1 | 1M/1% | Resistor_SMD:R_0402_1005Metric | R147 |
| 1 | 2.2uH/2.5A | Fabmicro:Murata_LQH44PN | L2 |
| 1 | 22uF/25V | Capacitor_SMD:C_0805_2012Metric | C77 |
| 1 | 22uF/25V | Fabmicro:C_0805_2012Metric_slim | C71 |
| 1 | 25 MHz | Fabmicro:Crystal_SMD_EuroQuartz_MT-4Pin_3.2x2.5mm | Y2 |
| 1 | 27K/1% | Fabmicro:R_0402_1005Metric | R158 |
| 1 | 3.3nF/50V | Fabmicro:C_0402_1005Metric | C1 |
| 1 | 33K/1% | Fabmicro:R_0402_1005Metric | R38 |
| 1 | 3K/1% | Fabmicro:R_0402_1005Metric | R39 |
| 1 | 4.7uF/6.3V | Fabmicro:C_0402_1005Metric | C45 |
| 1 | 47K/1% | Fabmicro:R_0402_1005Metric | R42 |
| 1 | 510R/1% | Resistor_SMD:R_0402_1005Metric | R178 |
| 1 | 560pF/50V | Fabmicro:C_0402_1005Metric | C2 |
| 1 | 6MHz | Fabmicro:Crystal_SMD_7050-4Pin_7.0x5.0mm | Y1 |
| 1 | AD5328BRUZ | Fabmicro:TSSOP-16_4.4x5mm_P0.65mm | U11 |
| 1 | ADC128S052CIMT | Fabmicro:TSSOP-16_4.4x5mm_P0.65mm | U10 |
| 1 | AO3401A | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | AT24C01C-SSHM | Fabmicro:SOIC-8_3.9x4.9mm_P1.27mm | U6 |
| 1 | BZV55-B10 | Fabmicro:D_SOD-80 | D7 |
| 1 | Conn_01x07 | Connector_PinHeader_2.00mm:PinHeader_1x07_P2.00mm_Vertical | J4 |
| 1 | Conn_02x20_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x20_P2.54mm_Vertical | XS5 |
| 1 | DM3AT-SF-PEJM5 | Fabmicro:HRS_DM3AT-SF-PEJM5 | XS2 |
| 1 | DNM | Capacitor_SMD:C_0805_2012Metric | C7 |
| 1 | EEPROM RESET | Fabmicro:PinHeader_1x02_P2.54mm_Vertical | J2 |
| 1 | FT2232D | Fabmicro:LQFP-48_7x7mm_P0.5mm | U20 |
| 1 | HDMI_A_1.4 | Fabmicro:HDMI_A_Amphenol_10029449-x01xLF_Horizontal | J3 |
| 1 | KLS2-126-5.00-02 | Fabmicro:KLS2-126-5.00-2_Vertical | XS1 |
| 1 | LAN8710AI | Fabmicro:QFN-32-1EP_5x5mm_P0.5mm_EP3.3x3.3mm | U8 |
| 1 | LFE5U-25F-BG256C | Fabmicro:BGA256C80P16X16_1400X1400X170 | U5 |
| 1 | MAX487ECSA+ | Fabmicro:SOIC-8_3.9x4.9mm_P1.27mm | U9 |
| 1 | MT48LC32M16A2TG-75 | Package_SO:TSOP-II-54_22.2x10.16mm_P0.8mm | U21 |
| 1 | RJHSE-5381 | Fabmicro:AMPHENOL_RJHSE-5381 | XS4 |
| 1 | RS3236-2.5YF5 | Package_TO_SOT_SMD:SOT-23-5 | U3 |
The 354 most common of 368 parts.
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Questions
How big is the Karnix ASB PCB?
It measures 85 × 56 mm and has 6 copper layers, 1.6 mm thick.
What parts does the Karnix ASB use?
368 parts, built around the LAN8710AI-EZK, MAX487ECSA+, LM258A and AD5328BRUZ. 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 Karnix ASB KiCad files?
From the Fabmicro-LLC/Karnix_ASB-254 repository on GitHub, at the commit this page was made from: the board is Karnix_ASB-v2.0/Karnix_ASB.kicad_pcb and its schematic Karnix_ASB-254-v1.0/DACnADC.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Karnix ASB design in my own project?
Its repository states no licence, so its author keeps all rights: ask Fabmicro-LLC before reusing the design.