4 layers68.6 × 53.3 mm
4 layers68.6 × 80 mm
Led photodiode avr
eshazen/ddc-adc-evalEvaluation board for DDC11x ADC
- Size
- 68.6 × 80 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 69
- Nets
- 84
- Pads
- 254
- Tracks, vias
- 554, 112
- Pours
- 8
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 6 Aug 2025
- Updated
- 19 Nov 2025
Overview
Led photodiode avr is an open-source printed circuit board by eshazen, from the eshazen/ddc-adc-eval repository on GitHub. It is a 4-layer board of 68.6 × 80 mm with 69 parts on 84 nets, routed with 554 tracks and 112 vias.
It is built around the ATMEGA328-AU, DDC112U and LTC1380IGN, with the REF3040AIDBZT among its other parts. Its parts include 26 capacitors, 14 resistors, 9 ICs, 4 diodes and 4 transistors. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
4
ATMEGA328-AU
TQFP-32(7x7)-40℃~+85℃ 1.8V~5.5V 10bit 1KB 20MHz 23 2KB 32KB 8 Bit AVR Built-in FLASH TQFP-32(7x7) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
DDC112U
SOIC-28-300mil-40℃~+85℃ 10MHz 2 20 2kHz 4.75V~5.25V External External Multiplexers、Integrated modulator Serial port Sigma-Delta Support Yes SOIC-28-300mil Analog to Digital Converters (ADC) ROHSTexas InstrumentsAnalog To Digital Converters (ADC)
LTC1380IGN
SSOP16Single-Ended 8-Channel Analog Multiplexer with SMBus InterfaceAnalog DevicesUncategorised
REF3040AIDBZT
SOT-23-40℃~+125℃ 128uVrms 25mA 4.096V 4.096V~5.5V 42uA 45uVp-p 75ppm/℃ Fixed Series ±0.2% SOT-23 Voltage Reference ROHSTexas InstrumentsVoltage Reference
README
KiCAD/optical-carrier/README.mdoptical-carrier
Simple carrier board for one photodiode and 3 LEDs.
ECOs
- Photodiode wiring is reversed from the "obvious" orientation.
Parts
69| Qty | Value | Footprint | References |
|---|---|---|---|
| 11 | 0.1uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C5, C6, C10, C12, C14, C16, C18, C22, C23, C54, C55 |
| 6 | 10uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C2, C4, C7, C9, C11, C13 |
| 4 | 1.5k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R2, R10, R11, R47 |
| 4 | LED | LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D1, D2, D3, D4 |
| 4 | MountingHole | MountingHole:MountingHole_4.3mm_M4_DIN965_Pad | H1, H2, H3, H4 |
| 4 | TTC1949 | Package_TO_SOT_SMD:SC-59 | Q1, Q2, Q3, Q4 |
| 3 | 1k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R3, R5, R6 |
| 3 | 4.7k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R8, R9, R45 |
| 2 | 0.33uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C15 |
| 2 | 10uH | Inductor_SMD:L_0805_2012Metric_Pad1.15x1.40mm_HandSolder | L1, L2 |
| 2 | 22uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C3, C8 |
| 2 | AZ1117CH2-5.0 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U2, U10 |
| 2 | C | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C19, C20 |
| 1 | 0R | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R29 |
| 1 | 1.0uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C52 |
| 1 | 10k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1 |
| 1 | 120pF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C17 |
| 1 | 1nF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C21 |
| 1 | 24.9 | Resistor_SMD:R_1206_3216Metric | R7 |
| 1 | 442 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R4 |
| 1 | ATmega328-A | Package_QFP:TQFP-32_7x7mm_P0.8mm | U7 |
| 1 | CO_16MHZ | Oscillator:Oscillator_SMD_Abracon_ASE-4Pin_3.2x2.5mm | Y1 |
| 1 | Conn_01x06_Pin | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Horizontal | J4 |
| 1 | Conn_02x08_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x08_P2.54mm_Vertical | J2 |
| 1 | DDC112 | Package_SO:SOIC-28W_7.5x17.9mm_P1.27mm | U5 |
| 1 | ISP | Connector_IDC:IDC-Header_2x03_P2.54mm_Horizontal | J3 |
| 1 | LTC1380 | Package_SO:SOIC-16_3.9x9.9mm_P1.27mm | U6 |
| 1 | LTC2631 | Package_TO_SOT_SMD:TSOT-23-8 | U9 |
| 1 | OPA365AIDR | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U8 |
| 1 | OPA365xxD | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U3 |
| 1 | Optical_PCB | optical_pcb_model:optical_pcb | N1 |
| 1 | REF3040AIDBZT | Package_TO_SOT_SMD:SOT-23 | U1 |
| 1 | Screw_Terminal_01x02 | TerminalBlock:TerminalBlock_MaiXu_MX126-5.0-02P_1x02_P5.00mm | J1 |
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Questions
How big is the Led photodiode avr PCB?
It measures 68.6 × 80 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Led photodiode avr use?
69 parts, built around the ATMEGA328-AU, DDC112U, LTC1380IGN and REF3040AIDBZT. 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 Led photodiode avr KiCad files?
From the eshazen/ddc-adc-eval repository on GitHub, at the commit this page was made from: the board is KiCAD/led-photodiode-avr/led-photodiode-avr.kicad_pcb and its schematic KiCAD/ddc112-shield/LED_driver.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Led photodiode avr design in my own project?
Its repository states no licence, so its author keeps all rights: ask eshazen before reusing the design.