2 layers19.1 × 14.3 mm
Preamp
stockmann-lab/Open_Source_MRI_Tools_MGH
Open source tools developed in the RF Lab at MGH
23 parts1
2 layers110 × 70 mm
TR Switch
menkueclab/TR-Switch4T/R Switch with LNA for low-field MRI
- Size
- 110 × 70 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 85
- Nets
- 43
- Pads
- 236
- Tracks, vias
- 342, 83
- Pours
- 21
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 12 Jul 2020
- Updated
- 24 Jan 2024
Overview
TR Switch is an open-source printed circuit board by menkueclab, from the menkueclab/TR-Switch repository on GitHub. It is a 2-layer board of 110 × 70 mm with 85 parts on 43 nets, routed with 342 tracks and 83 vias.
It is built around the PHA-13LN, OPA551UA and L7812, with the BAV99, BAT54GWX and PMV100EPAR among its other parts. Its parts include 36 capacitors, 20 resistors, 9 ICs, 7 connectors and 6 diodes.
Main components
6
PHA-13LN
DF7821MHz to 1GHz, 50 Ohm, Ultra High Dynamic Range Monolithic AmplifierMini-CircuitsUncategorised
OPA551UA
SOIC-8-30V~-4V、4V~30V -40℃~+125℃ 1 102dB 14nV/√Hz@1kHz 15V/us 1mV 200mA 20pA 3MHz 3pA 7mA 7uV/℃ Built-in compensation SOIC-8 Operational Amplifier ROHSTexas InstrumentsOperational Amplifier
L7812
TO-220ST0℃~+125℃@(Tj) 1 1.2A 12V 2V@(1A) 30V 71dB@(120Hz) 76uV Fixed Positive Short Circuit Protection TO-220ST Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSOSENVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
BAV99
SOT-231 Pair Series Connection 1.25V@150mA 100V 215mA 250mW 4A 4ns 500nA@80V SOT-23 Switching Diodes ROHSNexperiaSwitching Diodes
BAT54GWX
SOD-123Schottky DiodesNexperiaPMV100EPAR
SOT-23-55℃~+175℃ 1 P-Channel 130mΩ@10V 17nC@10V 2.2A 26pF 3.2V 60V 616pF 8.3W P-Channel SOT-23 MOSFETs ROHSNexperiaMOSFETs
README
README.mdTR-Switch
T/R Switch with LNA for low-field MRI.
Contributing
- Jason Stockmann
- Thomas Witzel
- Don
- Lincoln Craven-Brightman
- Marcus Prier
- Odin Holmes
References
- https://tabletop.martinos.org/index.php/Hardware:RF
- http://rflab.martinos.org/index.php/Low-noise_RF_Preamplifier
Disclaimer
Not intended for medical use!
Parts
85| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | 10uF | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C1, C4, C8, C24, C30, C36 |
| 5 | 0.1uF | Capacitor_SMD:C_0603_1608Metric | C3, C9, C29, C34, C35 |
| 4 | 10K | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R4, R5, R9, R10 |
| 4 | 1nF | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C5, C27, C31, C37 |
| 4 | 1uF | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C16, C21, C22, C23 |
| 4 | 2.2uF | Capacitor_SMD:C_0603_1608Metric | C19, C28, C32, C38 |
| 4 | 47pF | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C10, C11, C14, C15 |
| 3 | 100 | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R1, R12, R13 |
| 2 | 0 | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R6, R7 |
| 2 | 0.47uF | user_Capacitor_SMD:C_0204_0510Metric | C25, C26 |
| 2 | 1 | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R14, R15 |
| 2 | 1.5pF | Capacitor_SMD:C_0402_1005Metric | C18, C33 |
| 2 | 100pF | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C12, C13 |
| 2 | 15k | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R2, R3 |
| 2 | 15uH | Inductances:Wuerth_Fixed_Inductors_WE-GFH | L3, L4 |
| 2 | 1K5 | Resistor_SMD:R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R19, R20 |
| 2 | 1M | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R17, R18 |
| 2 | 5.1nH | Inductor_SMD:L_0603_1608Metric_Pad1.05x0.95mm_HandSolder | L5, L6 |
| 2 | BAV99 | Package_TO_SOT_SMD:SOT-23 | D3, D6 |
| 2 | LM4040DBZ-2.5 | Package_TO_SOT_SMD:SOT-23 | U8, U9 |
| 2 | MA4P7001F | PIN Diodes:D_MELF_1072 | D2, D4 |
| 2 | PHA-13LN | Package_TO_SOT_SMD:SOT-89-3 | U5, U6 |
| 2 | empty | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C2, C6 |
| 1 | 0.1uF | Capacitor_SMD:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C17 |
| 1 | 10 0.1W | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R11 |
| 1 | 13V Power In | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J2 |
| 1 | 2.2uH | Inductances:Wuerth_Fixed_Inductors_WE-GFH | L1 |
| 1 | 380 | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R16 |
| 1 | 468nH | Inductances:L_Axial_L20.0mm_D8.0mm_P25.40mm_Horizontal | L2 |
| 1 | BAT54GWX | Diode_SMD:D_SOD-123 | D1 |
| 1 | Coil | Connector_Coaxial:SMA_Amphenol_132134_Vertical | J4 |
| 1 | Conn_01x02 | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J6 |
| 1 | Conn_01x03 | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J7 |
| 1 | L7812 | Package_TO_SOT_THT:TO-220-3_Vertical | U1 |
| 1 | LM317_TO220 | Package_TO_SOT_THT:TO-220-3_Vertical | U3 |
| 1 | LM337_TO220 | Package_TO_SOT_THT:TO-220-3_Vertical | U4 |
| 1 | OPA551U | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U2 |
| 1 | PMV100EPAR | Package_TO_SOT_SMD:SuperSOT-3 | Q1 |
| 1 | PWR 6V | LED_SMD:LED_1206_3216Metric_Pad1.42x1.75mm_HandSolder | D5 |
| 1 | RX | Connector_Coaxial:SMA_Amphenol_132134_Vertical | J5 |
| 1 | SCLF-X-21.4+ | RF_Mini-Circuits:Mini-Circuits_YY161_LandPatternPL-049 | U7 |
| 1 | TX | Connector_Coaxial:SMA_Amphenol_132134_Vertical | J3 |
| 1 | Tx Gate | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J1 |
| 1 | empty | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R8 |
Questions
How big is the TR Switch PCB?
It measures 110 × 70 mm and has 2 copper layers, 1.6 mm thick.
What parts does the TR Switch use?
85 parts, built around the PHA-13LN, OPA551UA, L7812 and BAV99. 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 TR Switch KiCad files?
From the menkueclab/TR-Switch repository on GitHub, at the commit this page was made from: the board is PCB/TR-Switch/TR-Switch.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the TR Switch design in my own project?
Its repository states no licence, so its author keeps all rights: ask menkueclab before reusing the design.
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