4 layers30 × 30 mm
4 layers100 × 50 mm
LT3045-4
tchiwam/LNALowest NF possible on PCB for about 30dB gain Works at -40C
- Size
- 100 × 50 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 36
- Nets
- 20
- Pads
- 120
- Tracks, vias
- 230, 1,724
- Pours
- 54
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 10 Nov 2020
- Updated
- 25 Jul 2022
Overview
LT3045-4 is an open-source printed circuit board by tchiwam, from the tchiwam/LNA repository on GitHub. It is a 4-layer board of 100 × 50 mm with 36 parts on 20 nets, routed with 230 tracks and 1,724 vias.
It is built around the LT3042 and DLW5BTH101TQ2L. Its parts include 13 capacitors, 4 resistors, 4 ICs, 2 connectors and 2 inductors.
Main components
2README
README.mdLNA
Lowest NF possible on PCB for about 30dB gain Works at -40C
QPL90?? under review
Power supply
Works at -40C lowest possible noise rejection lowest DC ripple
4x LT3045 in progress
CC license coming soon..
Parts
36| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | 4.7µF 35V | Capacitor_SMD:C_0805_2012Metric | C4, C5, C6, C10, C11, C13 |
| 4 | 10µF | Capacitor_SMD:C_1206_3216Metric_SPLIT | C3, C7, C8, C9 |
| 4 | 287 | Resistor_SMD:R_0603_1608Metric | RIlim1, RIlim2, RIlim3, RIlim4 |
| 4 | LT3042 | Package_DFN_QFN:DFN-10-1EP_3x3mm_P0.5mm_EP1.65x2.38mm | U1, U2, U3, U4 |
| 4 | MountingHole_Pad | MountingHole:MountingHole_3.2mm_M3 | MH1, MH2, MH3, MH4 |
| 2 | 22µF 35V | Capacitor_Tantalum_SMD:CP_EIA-7343-30_AVX-N | C1, C12 |
| 2 | Conn_Coaxial_Power | Connector_Coaxial:SMA_Amphenol_132289_EdgeMount | J1, J2 |
| 1 | 16.5k | Resistor_SMD:R_0603_1608Metric | R2 |
| 1 | 200k | Resistor_SMD:R_0603_1608Metric | R1 |
| 1 | 22µF 35V | Capacitor_SMD:C_2220_5650Metric | C2 |
| 1 | 453k | Resistor_SMD:R_0603_1608Metric | R5 |
| 1 | 49.9k | Resistor_SMD:R_0603_1608Metric | R6 |
| 1 | 4A | Fuse:Fuse_Bourns_MF-SM_9.5x6.71mm | F1 |
| 1 | 8.25k | Resistor_SMD:R_0603_1608Metric | Rset1 |
| 1 | DLW5BTH101TQ2L | Transformer_SMD:CMC_DLW5BTH | L1 |
| 1 | Ferrite_Bead_Small | Inductor_SMD:L_1206_3216Metric | L2 |
| 1 | Rcdc | Resistor_SMD:R_0603_1608Metric | Rcdc1 |
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Questions
How big is the LT3045-4 PCB?
It measures 100 × 50 mm and has 4 copper layers, 1.6 mm thick.
What parts does the LT3045-4 use?
36 parts, built around the LT3042 and DLW5BTH101TQ2L. 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 LT3045-4 KiCad files?
From the tchiwam/LNA repository on GitHub, at the commit this page was made from: the board is Kicad/LT3045-4.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the LT3045-4 design in my own project?
Its repository states no licence, so its author keeps all rights: ask tchiwam before reusing the design.