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Bias generator LT8362

OpenSiPM·sipm-bias-control·bias-control-lt8362/bias_generator_LT8362.kicad_pcb

Bias generator LT8362 PCB layout, top view — open source Microchip SAM board by OpenSiPM
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About the Bias generator LT8362 PCB

Bias generator LT8362 is an open source Microchip SAM PCB design by OpenSiPM, published on GitHub under the MIT license. It is a 4-layer board measuring 37.6 × 30.6 mm, with 45 components from 26 distinct parts.

Its main chip is the ATSAMD21E18A-AFT, from the Microchip SAM family. Other key parts include the LT8364EMSE#TRPBF, MCP47FEB22A2-E/ST, MIC5317-3.3YM5-TR, RT9072B and MCP6C02T-020E/CHY. By type, the board carries 18 capacitors, 15 resistors, 6 ICs, 3 connectors, 2 diodes and 1 inductor.

From the project

Single channel silicon photomultipliers for high-speed fluorescence imaging

This is a new version of the Bias Generator that has an additional customizable current limiting feature, modified components and been designed for easier construction. It also has much higher output current and can be used to drive larger SiPMs or arrays of multiple SiPMs.

Bias generator LT8362, from the project README
From the project README

Main components on the Bias generator LT8362

LT8364EMSE#TRPBFATSAMD21E18A-AFTMCP47FEB22A2-E/STMIC5317-3.3YM5-TRRT9072BMCP6C02T-020E/CHY

Bias generator LT8362 bill of materials (BOM)

45 components, 26 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
LT8364EMSE#TRPBF
LT8361EMSE/LT8362EMSE
IC1
1
ATSAMD21E18A-AFT
ATSAMD21E18A-AF
IC2
1
MCP47FEB22A2-E/ST
MCP47FEB22A2-E_ST
IC4
1
MIC5317-3.3YM5-TR
U1
1
RT9072B
U2
1
MCP6C02T-020E/CHY
U3
1
Conn_01x04
J2
1
Conn_01x06
J3
1
USB_C_Receptacle_USB2.0_16P
J4
1
1N4148WS
D2
1
PMEG6030EP
D3
1
SRP05203R3K
3.3uH
L1
2
22u
C1, C4
7
2.2u
C2, C7, C9, C10, C14, C17, C18
1
1u
C3
5
2.2uF
C5, C6, C8, C11, C13
1
25pF
C12
1
2.2n
C15
1
10n
C16
6
5.1k
R1, R3, R7, R8, R9, R10
Show 6 more
QtyPartRefs
1
69.8k
R2
2
1M
R4, R5
1
39k (LT8361) / 52.3k (LT8362)
R6
1
36.5k
R11
3
39k
R12, R15, R16
1
5
R13

Bias generator LT8362 design files

The KiCad project lives in the OpenSiPM/sipm-bias-control repository on GitHub; these links point at the commit this page was built from.

Bias generator LT8362: common questions

What microcontroller does the Bias generator LT8362 use?

The Bias generator LT8362 is built around the ATSAMD21E18A-AFT, from the Microchip SAM family.

How big is the Bias generator LT8362 PCB?

The Bias generator LT8362 measures 37.6 × 30.6 mm, has 4 copper layers and is 1.59 mm thick.

How many components are on the Bias generator LT8362?

45 components, from 26 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Bias generator LT8362 design files?

From the OpenSiPM/sipm-bias-control repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Bias generator LT8362 design in my own project?

Yes, under the terms of its MIT license, which OpenSiPM chose for the repository.

Can I test firmware for the Bias generator LT8362 without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug Microchip SAM firmware against it before you order a PCB.

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