4 layers56.3 × 45.9 mm
4 layers45 × 27.5 mm
CSAD2
myriadrf/lc-clockLibreCellular reference clock designs.
- Size
- 45 × 27.5 mm
- Copper layers
- 4
- Thickness
- 1.61 mm
- Parts
- 42
- Nets
- 31
- Pads
- 120
- Tracks, vias
- 119, 43
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 11 Aug 2023
- Updated
- 13 Jan 2024
Overview
CSAD2 is an open-source printed circuit board by myriadrf, from the myriadrf/lc-clock repository on GitHub. It is a 4-layer board of 45 × 27.5 mm with 42 parts on 31 nets, routed with 119 tracks and 43 vias.
It is built around the HSMS-281C, LTC6957IMS-3 and AP7361C-33E, with the U.FL-R-SMT(01), 150080GS75000 and USB4110-GF-A among its other parts. Its parts include 13 capacitors, 10 resistors, 5 connectors, 2 ICs and 2 diodes. It belongs with the lEDs and displays boards of this library.
Main components
7
HSMS-281C
SOT323Dual Series RF Schottky Barrier DiodesAVAGO TECHNOLOGIESUncategorised
LTC6957IMS-3
MSOP12Low Phase Noise, Dual Output Buffer/Driver/Logic Converter, CMOS Logic, In-Phase OutputsAnalog DevicesUncategorised
AP7361C-33E
SOT-223-40℃~+85℃@(Ta) 1 1A 3.3V 340mV@(1A) 6V 75dB@(1kHz) 80uA Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown、Enable control Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSDiodes IncorporatedVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
U.FL-R-SMT(01)
SMD-40℃~+90℃ 1 1.25mm 2mm 50Ω 6GHz Board Side IPEX Inner pin SMD Coaxial Connectors (RF) ROHSHirose ElectricCoaxial Connectors (RF)
150080GS75000
0805-40℃~+85℃ 140° 20mA 3.2V~3.5V 450mcd 515nm 525nm Discrete Diode Green Water Clear 0805 LED Indication - Discrete ROHSWürth ElektronikLED Indication - Discrete
USB4110-GF-A
SMD-40℃~+85℃ 1 48V 5A Black Female Surface Mount, Right Angle Type-C USB 2.0 SMD USB Connectors ROHSGlobal Connector Technology (GCT)USB Connectors
WBC16-1TL
SMD-6SMD-6P New Arrivals ROHSCoilcraftUncategorised
README
README.rstLibreCellular Reference Clock Designs
.. image:: https://raw.githubusercontent.com/myriadrf/lc-clock/main/images/CSAD10_0p2_PCB_1_1280w.jpg :alt: CSAD10 prototype.
This repository contains the LibreCellular reference clock PCB (KiCAD) designs.
CSAD10
Performs clock shaping and distribution. Takes a sine or square wave as input and provides provides ten square wave outputs.
For further details see the LibreCellular Documentation_.
CSAD2 (WIP)
Performs clock shaping and distribution. Takes a sine or square wave as input and provides provides two square wave outputs.
Warning: do not build! This is a work in progress and the current design does not provide sufficient output level.
Licence
LibreCelluar Reference Clock Designs is copyright 2023 AB Open Ltd and provided under the Solderpad Hardware License v2.1.
.. _LibreCellular Documentation: https://librecellular.org/developer/hardware/ci/csad10.html
Parts
42| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | 0.1uF | Capacitor_SMD:C_0603_1608Metric | C7, C8, C10, C16, C17, C18 |
| 6 | 100R | Resistor_SMD:R_0603_1608Metric | R2, R3, R6, R7, R10, R12 |
| 4 | 1uF | Capacitor_SMD:C_0603_1608Metric | C1, C2, C30, C31 |
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3_ISO7380 | H1, H2, H3, H4 |
| 3 | U.FL-R-SMT(01) | ABOP_Parts:Connector_RF_Hirose_U.FL-R-SMT(01) | J3, J4, J7 |
| 2 | 10nF | Capacitor_SMD:C_0603_1608Metric | C4, C5 |
| 2 | 5K1 | Resistor_SMD:R_0603_1608Metric | R4, R5 |
| 2 | SolderJumper_3_Bridged12 | Jumper:SolderJumper-3_P1.3mm_Bridged12_RoundedPad1.0x1.5mm_NumberLabels | JP1, JP2 |
| 1 | 150080GS75000 | LED_SMD:LED_0805_2012Metric | D1 |
| 1 | 22-23-2021 | Connector_Molex:Molex_KK-254_AE-6410-02A_1x02_P2.54mm_Vertical | J1 |
| 1 | 4.7uF | Capacitor_SMD:C_0603_1608Metric | C3 |
| 1 | 604R | Resistor_SMD:R_0603_1608Metric | R11 |
| 1 | 60R @ 100MHz | Resistor_SMD:R_0805_2012Metric | FB1 |
| 1 | 680R | Resistor_SMD:R_0603_1608Metric | R1 |
| 1 | AP7361C-33E | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U1 |
| 1 | G*** | kibuzzard-6464B5BF | kibuzzard-6464B5BF |
| 1 | HSMS-281C | Package_TO_SOT_SMD:SOT-23 | D2 |
| 1 | LTC6957IMS-3 | Package_SO:MSOP-12_3x4mm_P0.65mm | U2 |
| 1 | SolderJumper_2_Open | Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP3 |
| 1 | USB4110-GF-A | ABOP_Parts:USB_C_Receptacle_GCT_USB4110-xx-A_16P_TopMnt_Horizontal | J2 |
| 1 | WBC16-1T | ABOP_Parts:Transformer_Coilcraft_WBC_Series | T1 |
Questions
How big is the CSAD2 PCB?
It measures 45 × 27.5 mm and has 4 copper layers, 1.61 mm thick.
What parts does the CSAD2 use?
42 parts, built around the HSMS-281C, LTC6957IMS-3, AP7361C-33E and U.FL-R-SMT(01). 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 CSAD2 KiCad files?
From the myriadrf/lc-clock repository on GitHub, at the commit this page was made from: the board is csad2/CSAD2.kicad_pcb and its schematic csad10/CSAD10.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the CSAD2 design in my own project?
Its repository states no licence, so its author keeps all rights: ask myriadrf before reusing the design.
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