2 layers53 × 23 mm
Maam 011109 bias
loxodes/vna
Under development open hardware microwave vector network analyzer
52 parts205
4 layers101 × 47 mm
Prototype time domain reflectometer/sampling oscilloscope
- Size
- 101 × 47 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 240
- Nets
- 170
- Pads
- 773
- Tracks, vias
- 1,859, 328
- Pours
- 7
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 2 Nov 2018
- Updated
- 26 Apr 2019
Overview
Tdr is an open-source printed circuit board by loxodes, from the loxodes/tdr repository on GitHub, published under the MIT licence. It is a 4-layer board of 101 × 47 mm with 240 parts on 170 nets, routed with 1,859 tracks and 328 vias.
It is built around the 74HC244D, CDCLVP1204RGT and X0060L5050AHF2, with the DAC7563SDSCR, OPA2140AID and LD39100PU33R among its other parts. Its parts include 90 capacitors, 90 resistors, 16 ICs, 11 connectors and 6 inductors.
Main components
9
74HC244D
SO-20-300mil-40℃~+125℃ 160uA 2 2V~6V 4 6mA 6mA 74HC 9ns@5V,15pF Tri-State Unidirectional SOIC-20-300mil Buffers, Drivers, Receivers, Transceivers ROHSNexperiaBuffers, Drivers, Receivers, Transceivers
CDCLVP1204RGT
QFN-16-EP(3x3)-40℃~+85℃ 2.375V~3.6V 450ps CDCLVP Unidirectional VQFN-16-EP(3x3) Buffers, Drivers, Receivers, Transceivers ROHSTexas InstrumentsClock Buffers, Drivers, Distributors
X0060L5050AHF2
0603RF Misc ICs And ModulesTTM Technologies, Inc.
DAC7563SDSCR
WSON-10-EP(3x3)-40℃~+125℃ 0.75LSB 10us 12 2 2.7V~5.5V Integrated buffer、Power-on reset、Power-down mode、Built-in reference source SPI WSON-10-EP(3x3) Digital to Analog Converters (DAC) ROHSTexas InstrumentsDigital To Analog Converters (DAC)
OPA2140AID
SOIC-8-18V~-2.25V、2.25V~18V -40℃~+125℃ 0.35uV/℃ 1.8mA 10pA 10pA 11MHz 120dB 120uV 2 20V/us 36mA 4.5V~36V 5.1nV/√Hz@1kHz Rail-to-rail output Short-Circuit Protection SOIC-8 FET Input Amplifiers ROHSTexas InstrumentsFET Input Amplifiers
LD39100PU33R
DFN-6(3x3)-40℃~+125℃@(Tj) 1 1A 3.3V 400mV@(1A) 5.5V 50uA 65dB@(1kHz) 85uVrms Fixed PG Pin、Over Current Protection、Over Temperature Protection、Enable、Short Circuit Protection Positive DFN-6(3x3) Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSSTMicroelectronicsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
LM27762DSS
WSON-12-EP(2x3)-40℃~+85℃ -5V~-1.5V、1.5V~5V 2.5Ω 2.7V~5.5V 250mA 2MHz 390uA Inverted Support WSON-12-EP(2x3) Charge Pumps ROHSTexas InstrumentsCharge Pumps
NB6L295MMNG
QFN-24-EP(4x4)-40℃~+85℃ 2.375V~3.6V 3.2ns~8.5ns、6.2ns~16.6ns QFN-24-EP(4x4) Time Delays ROHSonsemiTime Delays
SI2369DS
SOT-23-55℃~+150℃ 1 P-Channel 1.295nF 11.4nC@10V 130pF 150pF 2.5V 2.5W 30V 40mΩ@4.5V 7.6A P-Channel SOT-23 MOSFETs ROHSVishay IntertechnologyMOSFETs
README
README.mdtdr
Prototype time domain reflectometer/sampling oscilloscope. 90 gigasamples/second equivalent time sampling with an actual sampling rate of 5 kilosamples/second.
The input bandwidth is TBD, maybe 8 GHz?
Following is sampling the falling edge of the TDR pulse, impedance of a BNC tee, and a 1.2 GHz sine wave with analog triggering.
Parts
240| Qty | Value | Footprint | References |
|---|---|---|---|
| 26 | 10 nF | Capacitors_SMD:C_0402 | C301, C302, C303, C304, C308, C309, C401, C402, C403, C405, C501, C502, C503, C504, C602, C603 +10 |
| 20 | JMP | Resistors_SMD:R_0402 | R202, R204, R220, R221, R227, R228, R233, R234, R301, R305, R306, R324, R401, R405, R406, R407 +4 |
| 15 | 33 pF | Capacitors_SMD:C_0402 | C801, C803, C805, C811, C812, C813, C814, C815, C816, C817, C818, C819, C820, C821, C822 |
| 14 | 100 pF | Capacitors_SMD:C_0402 | C306, C311, C314, C315, C316, C321, C323, C326, C604, C605, C606, C607, C609, C612 |
| 13 | DNP | Resistors_SMD:R_0402 | R209, R210, R213, R215, R236, R237, R307, R308, R310, R312, R318, R713, R714 |
| 12 | 4.7 uF | Capacitors_SMD:C_0603 | C201, C202, C205, C212, C213, C322, C324, C325, C406, C601, C707, C708 |
| 10 | 100 nF | Capacitors_SMD:C_0402 | C215, C305, C307, C310, C313, C317, C318, C320, C809, C810 |
| 10 | 10k | Resistors_SMD:R_0402 | R201, R208, R211, R235, R701, R707, R708, R709, R710, R712 |
| 9 | 22 | Resistors_SMD:R_Array_Convex_4x0402 | RN601, RN701, RN801, RN802, RN803, RN804, RN805, RN806, RN807 |
| 9 | TestPoint | vna_footprints:TP07R | TP301, TP302, TP303, TP304, TP305, TP306, TP801, TP802, TP803 |
| 8 | 1k | Resistors_SMD:R_0402 | R303, R304, R313, R314, R315, R403, R503, R504 |
| 7 | JMP | Resistors_SMD:R_0201 | R222, R223, R229, R230, R231, R506, R507 |
| 5 | DNI | Resistors_SMD:R_0402 | R203, R205, R302, R402, R505 |
| 5 | DNP | Resistors_SMD:R_0201 | R206, R207, R225, R226, R232 |
| 5 | L_Small | Resistors_SMD:R_0402 | L301, L701, L702, L801, L802 |
| 4 | 10 pF | Capacitors_SMD:C_0402 | C319, C705, C706, C807 |
| 4 | 125 | Resistors_SMD:R_0402 | R319, R320, R321, R325 |
| 4 | 13k | Resistors_SMD:R_0402 | R703, R704, R705, R706 |
| 4 | 84 | Resistors_SMD:R_0402 | R316, R317, R322, R323 |
| 4 | Conn_Coaxial | vna_footprints:SF2921-61345 | J203, J204, J205, J207 |
| 4 | MountingHole | Mounting_Holes:MountingHole_2-5mm | H201, H202, H203, H204 |
| 3 | 1 uF | Capacitors_SMD:C_0402 | C207, C701, C702 |
| 3 | 50 | Resistors_SMD:R_0402 | R224, R309, R311 |
| 2 | 1M | Resistors_SMD:R_0402 | R216, R219 |
| 2 | 332k | Resistors_SMD:R_0402 | R217, R218 |
| 2 | 68 | Resistors_SMD:R_0402 | R601, R602 |
| 2 | 74HC244 | Housings_SSOP:TSSOP-20_4.4x6.5mm_Pitch0.65mm | U801, U802 |
| 2 | ADCMP580 | Housings_DFN_QFN:QFN-16-1EP_3x3mm_Pitch0.5mm | U401, U501 |
| 2 | Conn_02x06_Counter_Clockwise | Pin_Headers:Pin_Header_Angled_2x06 | J801, J802 |
| 2 | Conn_Coaxial | vna_footprints:732511150_sma_thin_twopin | J208, J209 |
| 2 | DNP | Capacitors_SMD:C_0603 | C802, C806 |
| 2 | DNP | Capacitors_SMD:C_0402 | C312, C404 |
| 1 | 10 uF | Capacitors_SMD:C_0603 | C211 |
| 1 | 100 | Resistors_SMD:R_0402 | R404 |
| 1 | 100 uF | Capacitors_SMD:c_elec_6.3x5.8 | C214 |
| 1 | 74xx1G14 | TO_SOT_Packages_SMD:SOT-23-5 | U803 |
| 1 | ADCMP580 | Housings_DFN_QFN:UQFN-16-1EP_3x3mm_Pitch0.5mm | U301 |
| 1 | Barrel_Jack_Switch | vna_footprints:BARREL_JACK | J210 |
| 1 | CDCLVP1204 | Housings_DFN_QFN:UQFN-16-1EP_3x3mm_Pitch0.5mm | U302 |
| 1 | Conn_02x01 | Terminal_Blocks:TerminalBlock_Pheonix_MPT-2.54mm_2pol | J201 |
| 1 | Conn_Coaxial | vna_footprints:734120110_ufl_umc | J202 |
| 1 | DAC7563SDSCR | Housings_DFN_QFN:DFN-10-1EP_3x3mm_Pitch0.5mm | U701 |
| 1 | DV75D-010.0M | vna_footprints:DV75D | X301 |
| 1 | ICS853S057I | Housings_SSOP:TSSOP-20_4.4x6.5mm_Pitch0.65mm | U304 |
| 1 | LD39100PU33R | Housings_DFN_QFN:DFN-6-1EP_3x3mm_Pitch0.95mm | U201 |
| 1 | LM27762 | vna_footprints:WSON-12-1EP_3x2mm_Pitch0.5mm | U205 |
| 1 | LOGO | vna_footprints:cat | G*** |
| 1 | L_Small | Resistors_SMD:R_1210 | L201 |
| 1 | NB6L295MMNG | Housings_DFN_QFN:QFN-24-1EP_4x4mm_Pitch0.5mm | U601 |
| 1 | OPA2140 | Housings_SSOP:MSOP-8_3x3mm_Pitch0.65mm | U702 |
| 1 | Polyfuse_Small | Resistors_SMD:R_1210 | F201 |
| 1 | RED | LEDs:LED_0603 | D201 |
| 1 | SI2369DS | TO_SOT_Packages_SMD:SOT-23 | Q201 |
| 1 | SY89321L | vna_footprints:DFN-8-1EP_2x2mm_Pitch0.5mm | U402 |
| 1 | SY89321L-synth_lib | vna_footprints:DFN-8-1EP_2x2mm_Pitch0.5mm | U303 |
| 1 | X0060L5050AHF | synth_footprints:X0060L5050AHF | U305 |
Questions
How big is the Tdr PCB?
It measures 101 × 47 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Tdr use?
240 parts, built around the 74HC244D, CDCLVP1204RGT, X0060L5050AHF2 and DAC7563SDSCR. 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 Tdr KiCad files?
From the loxodes/tdr repository on GitHub, at the commit this page was made from: the board is hardware/tdr.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Tdr design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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