6 layers90.2 × 95.9 mm
Cubesat rp2040
macnetic/rp2040-cubesat
A CubeSat Onboard Computer, using the RP2040 microcontroller.
215 parts4
2 layers48 × 70 mm
Portable transceiver based on quadrature sampling detector/exciter
- Size
- 48 × 70 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 49
- Nets
- 40
- Pads
- 151
- Tracks, vias
- 441, 51
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 3
- Created
- 29 Jun 2012
- Updated
- 25 Mar 2013
Overview
Sch is an open-source printed circuit board by MarSik, from the MarSik/hf-sampling-trx repository on GitHub. It is a 2-layer board of 48 × 70 mm with 49 parts on 40 nets, routed with 441 tracks and 51 vias.
It is built around the LT6231CS8#PBF, SN65LVDS2DBV and SN74CBT3253D. Its parts include 20 resistors, 15 capacitors, 8 ICs, 3 connectors and 2 switches.
Main components
3
LT6231CS8#PBF
SO-8-5V~5V 0℃~+70℃ 1.7nV/√Hz@10kHz 120dB 12uA 2 215MHz 3.5mA 30mA 3V~12.6V 3uV/℃ 450uV 600nA 70V/us Enable/shutdown function Rail-to-rail output SO-8 Operational Amplifier ROHSAnalog DevicesOperational Amplifier
SN65LVDS2DBV
SOT-23-5-40℃~+85℃ 0 1 2.4V~3.6V 400Mbps LVDS Receiver SOT-23-5 LVDS ICs ROHSTexas InstrumentsLVDS ICs
SN74CBT3253D
SOIC-16-40℃~+85℃ 1.6ns@5V,50pF 3uA 4.5V~5.5V 74CBT Single Supply SOIC-16 Signal Switches, Multiplexers, Decoders ROHSTexas InstrumentsSignal Switches, Multiplexers, Decoders
README
READMEHF RX based on QSD and class E TX
Important components:
Si570 - any frequency I2C controlled square wave oscillator 74CBT(LV)3253 - dual 1:4 analog multiplexor LT6231CS8 - ultra low noise (1.1nV/sqrtHz) opamp ATXmega128A3U - 8bit micro with dual ADC and DAC XC9572XL - CPLD, programmable logic, 3.3V
References:
-
Dan Tayloe, N7VE Ultra Low Noise, High Performance, Zero IF Quadrature Product Detector and Preamplifier http://www.norcalqrp.org/files/Tayloe_mixer_x3a.pdf
-
Gerald Youngblood, AC5OG A Software-Defined Radio for the Masses http://www.flex-radio.com/data/doc/qex1.pdf http://www.flex-radio.com/data/doc/qex2.pdf http://www.flex-radio.com/data/doc/qex3.pdf http://www.flex-radio.com/data/doc/qex4.pdf
-
YU1LM HF - 6m band pass filters http://yu1lm.qrpradio.com/HF-6m%20BP%20YU1LM%20ver2.pdf
-
Dan Tayloe, N7VE Class E Amplifiers - NorCal QRP Club http://www.norcalqrp.org/files/class_e_amplifiers.pdf
Parts
49| Qty | Value | Footprint | References |
|---|---|---|---|
| 7 | 100n | SM1206 | C3, C6, C7, C8, C13, C14, C15 |
| 4 | 100 | SM1206 | R13, R14, R15, R16 |
| 4 | 10k | SM1206 | R9, R10, R11, R12 |
| 4 | 1k | SM1206 | R17, R18, R19, R20 |
| 4 | 820n | SM1206 | C9, C10, C11, C12 |
| 4 | 833 | SM1206 | R3, R5, R6, R8 |
| 3 | LT6231CS8 | SO8E | U6, U7, U8 |
| 2 | 10n | SM1206 | C2, C4 |
| 2 | 2k | SM1206 | R4, R7 |
| 2 | 5k1 | SM1206 | R1, R2 |
| 2 | CONN_3 | SIL-3 | K1, K2 |
| 2 | SN65LVDS2DBV | SOT23-5 | U2, U3 |
| 1 | 1u | SM1206 | C5 |
| 1 | C | SM1206 | C1 |
| 1 | COILCRAFT_WBC-B | TOROID_37 | T1 |
| 1 | CONN_2 | SIL-2 | P2 |
| 1 | CONN_4 | SIL-4 | P3 |
| 1 | FromBPF | uFL | P1 |
| 1 | LP2992AIM5-3.3V | SOT23-5 | U4 |
| 1 | LP2992AIM5-5.0V | SOT23-5 | U1 |
| 1 | SN74CBT3253D | SO16E | U5 |
Questions
How big is the Sch PCB?
It measures 48 × 70 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Sch use?
49 parts, built around the LT6231CS8#PBF, SN65LVDS2DBV and SN74CBT3253D. 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 Sch KiCad files?
From the MarSik/hf-sampling-trx repository on GitHub, at the commit this page was made from: the board is sch/rx.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Sch design in my own project?
Its repository states no licence, so its author keeps all rights: ask MarSik before reusing the design.
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