GammaSpectrometer
About the GammaSpectrometer PCB
GammaSpectrometer is an open source FPGA PCB design by RobertGawron, published on GitHub under the MIT license. It is a 4-layer board measuring 100 × 100 mm, with 291 components from 40 distinct parts.
Its main chip is the ICE40HX4K-TQ144, from the FPGA family. Other key parts include the AD9238, Untitled, ISL21010CFH325Z-T7A, MICROFC-60035-SMT-TR1_SiPM and LTC6268xS6-10. By type, the board carries 148 capacitors, 114 resistors, 26 ICs, 2 connectors and 1 diode.
It belongs with the sensors designs in this gallery.
From the project
Device for quantitative analyze energy spectra of gamma-ray sources. Allows to study what radioactive isotopes in what quantities are present in measured sample.
The hardware consists of four main parts:
Handles low-level currents produced by the sensor (typically 1uA - 1mA pulses, 10mV - 1V after amplification):
LYSO Scintillator Crystal - Converts gamma rays into visible light pulses through scintillation. The project uses eight crystals, each 22mm x 4mm x 4mm, stacked together into a single crystal assembly with a size of 22mm x 8mm x 16mm. Silicon Photomultiplier: MICROFC-60035-SMT-TR1 SiPM - Converts light pulses from the scintillator crystal into electrical current pulses. The project uses four SiPMs in two channels; each channel contains two…
Main components on the GammaSpectrometer
GammaSpectrometer bill of materials (BOM)
291 components, 40 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ICE40HX4K-TQ144 | TQFP-144_20x20mm_P0.5mm | U101 |
| 1 | AD9238 | LQFP-64_7x7mm_P0.4mm | U201 |
| 1 | Untitled | ScintillatorCrystalHolder | U301 |
| 1 | ISL21010CFH325Z-T7A | SOT-23 | U302 |
| 4 | MICROFC-60035-SMT-TR1_SiPM | MICROFC-60035-SMT-TR1_SiPM | U403, U404, U504, U505 |
| 2 | LTC6268xS6-10 | TSOT-23-6 | U405, U502 |
| 2 | AD8139 | SOIC-8_5.3x5.3mm_P1.27mm | U406, U503 |
| 1 | LT8330IS6 | TSOT-23-6 | U501 |
| 1 | 511JCA40M0000BAG | Oscillator_SMD_IDT_JS6-6_5.0x3.2mm_P1.27mm | U801 |
| 1 | SI53340-B-GMR | QFN-16-1EP_3x3mm_P0.5mm_EP1.9x1.9mm | U802 |
| 1 | NCP163ASN330T1G (3v3) | TSOT-23-5_HandSoldering | U901 |
| 1 | AP2112K-3.3 | SOT-23-5 | U902 |
| 1 | AP2112K-1.2 | SOT-23-5 | U903 |
| 1 | AP2112K-2.5 | SOT-23-5 | U904 |
| 1 | TPS62932 | SOT-583-8 | U905 |
| 1 | MX25L1606EM1I-12G | SOP-8_3.76x4.96mm_P1.27mm | U1201 |
| 3 | LT3042 | MSOP-12-1EP_3x4.039mm_P0.65mm_EP1.651x2.845mm_ThermalVias | U1401, U1402, U1403 |
| 1 | TPS7A49 | Texas_DGN0008B_VSSOP-8-1EP_3x3mm_P0.65mm_EP2x3mm_Mask1.88x1.98mm_ThermalVias | U1601 |
| 1 | CH340X | MSOP-10_3x3mm_P0.5mm | U1801 |
| 1 | RFShield_TwoPieces | BUD_CU-470_Shield | J301 |
Show 20 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | USB_B_Micro | USB_Micro-B_Molex-105017-0001_Extra_Mechanical_Pads | J1801 |
| 1 | D_Schottky | D_PowerDI-123 | D501 |
| 17 | 1u | C_0805_2012Metric | C103, C107, C217, C218, C221, C222, C234, C301 +9 |
| 10 | 10n | C_0805_2012Metric | C104, C108, C415, C421, C525, C528, C1302, C1304 +2 |
| 26 | 100n | C_0805_2012Metric | C201, C211, C212, C213, C214, C215, C216, C225 +18 |
| 8 | 10u | C_0805_2012Metric | C202, C203, C219, C220, C224, C226, C228, C230 |
| 77 | C | C_0805_2012Metric | C408, C409, C412, C414, C416, C417, C501, C502 +69 |
| 2 | 2n2 | C_0805_2012Metric | C410, C512 |
| 2 | 150p | C_0805_2012Metric | C420, C521 |
| 6 | 100p | C_0805_2012Metric | C422, C423, C424, C522, C523, C524 |
| 2 | 510R | R_0805_2012Metric | R103, R1901 |
| 2 | 1R | R_0805_2012Metric | R201, R202 |
| 32 | 22R | R_0805_2012Metric | R203, R204, R205, R206, R207, R208, R209, R210 +24 |
| 64 | R | R_0805_2012Metric | R402, R501, R502, R503, R504, R505, R506, R507 +56 |
| 2 | 2k | R_0805_2012Metric | R404, R508 |
| 2 | 2k2 | R_0805_2012Metric | R1802, R1803 |
| 2 | 100R | R_0805_2012Metric | R1902, R1903 |
| 2 | 1k | R_Array_Convex_4x0612 | RN401, RN501 |
| 2 | 620R | R_Array_Convex_4x0612 | RN402, RN502 |
| 4 | 100R | R_Array_Convex_4x0612 | RN403, RN404, RN503, RN504 |
GammaSpectrometer design files
The KiCad project lives in the RobertGawron/GammaSpectrometer repository on GitHub; these links point at the commit this page was built from.
GammaSpectrometer: common questions
What microcontroller does the GammaSpectrometer use?
The GammaSpectrometer is built around the ICE40HX4K-TQ144, from the FPGA family.
How big is the GammaSpectrometer PCB?
The GammaSpectrometer measures 100 × 100 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the GammaSpectrometer?
291 components, from 40 distinct parts. The full bill of materials is listed on this page.
Where can I download the GammaSpectrometer design files?
From the RobertGawron/GammaSpectrometer repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the GammaSpectrometer design in my own project?
Yes, under the terms of its MIT license, which RobertGawron chose for the repository.
Can I test firmware for the GammaSpectrometer without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug FPGA firmware against it before you order a PCB.
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