
Detector
bodokaiser/position-sensitive-detector
Position-sensitive detector with spatial resolution < 2.5 um.

Position-sensitive detector with spatial resolution < 2.5 um.
Arithmetic is an open-source printed circuit board by bodokaiser, from the bodokaiser/position-sensitive-detector repository on GitHub. It is a 2-layer board of 49.5 × 48.8 mm with 70 parts on 31 nets, routed with 347 tracks and 140 vias.
It is built around the LM317. Its parts include 24 resistors, 18 capacitors, 6 diodes, 6 connectors and 5 ICs.
Position-sensitive detector using the Hamamatsu S5991-01 position-sensitive photodiode.
| Parameter | Value |
|---|---|
| Spatial resolution | 2 um |
| Bandwidth | 1400 kHz |
| Input voltage | +- 15 V |
| Output voltage | +- 12 V |

| Qty | Value | Footprint | References |
|---|---|---|---|
| 17 | 10k | Resistor_SMD:R_0603_1608Metric | R6, R7, R8, R10, R12, R13, R14, R15, R16, R17, R18, R19, R20, R21, R22, R24 +1 |
| 8 | 100n | Capacitor_SMD:C_0603_1608Metric | C1, C2, C11, C12, C15, C16, C17, C18 |
| 6 | 5p | Capacitor_SMD:C_0603_1608Metric | C7, C8, C9, C10, C13, C14 |
| 4 | 1N4148 | Diode_SMD:D_SOD-123 | D1, D2, D3, D4 |
| 3 | Conn_Coaxial | Common:SMA_Molex_73251-2120_EdgeMount | J4, J5, J6 |
| 3 | OPA197xD | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U3, U4, U5 |
| 2 | 10u | Capacitor_SMD:C_1210_3225Metric | C3, C4 |
| 2 | 2.2k | Resistor_SMD:R_1210_3225Metric | R2, R3 |
| 2 | 22u | Capacitor_SMD:C_1210_3225Metric | C5, C6 |
| 2 | 240 | Resistor_SMD:R_1210_3225Metric | R1, R4 |
| 2 | Conn_01x05_Male | Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Vertical | J2, J3 |
| 2 | LED | LED_SMD:LED_0603_1608Metric | D5, D6 |
| 2 | MountingHole_Pad | MountingHole:MountingHole_2.7mm_M2.5_Pad | H1, H2 |
| 1 | +12V | TestPoint:TestPoint_Pad_D1.0mm | TP1 |
| 1 | -12V | TestPoint:TestPoint_Pad_D1.0mm | TP2 |
| 1 | 2k | Resistor_SMD:R_0603_1608Metric | R23 |
| 1 | 470 | Resistor_SMD:R_1210_3225Metric | R11 |
| 1 | 510 | Resistor_SMD:R_1210_3225Metric | R5 |
| 1 | Conn_01x03_Male | Connector:FanPinHeader_1x03_P2.54mm_Vertical | J1 |
| 1 | DIFFX+ | TestPoint:TestPoint_Pad_D1.0mm | TP5 |
| 1 | DIFFX- | TestPoint:TestPoint_Pad_D1.0mm | TP4 |
| 1 | DIFFY- | TestPoint:TestPoint_Pad_D1.0mm | TP7 |
| 1 | GND | TestPoint:TestPoint_Pad_D1.0mm | TP3 |
| 1 | LM317 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U1 |
| 1 | LM337 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U2 |
| 1 | LOGO | Common:mpq_lmu_logo | G*** |
| 1 | SUM+ | TestPoint:TestPoint_Pad_D1.0mm | TP9 |
| 1 | SUM- | TestPoint:TestPoint_Pad_D1.0mm | TP8 |

bodokaiser/position-sensitive-detector
Position-sensitive detector with spatial resolution < 2.5 um.

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It measures 49.5 × 48.8 mm and has 2 copper layers, 1.6 mm thick.
70 parts, built around the LM317. 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.
From the bodokaiser/position-sensitive-detector repository on GitHub, at the commit this page was made from: the board is kicad/arithmetic.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask bodokaiser before reusing the design.