# MAX86141 PPG Breakout ## Description Compact MAX86141 reflective PPG sensor breakout with 3.3 V host power, SPI, green/red/IR emitter, and external photodiode. ## Project Details - **Owner:** mreiscarneiro - **Created:** 7/28/2026 - **Last Updated:** 7/28/2026 - **Visibility:** Public ## Key Components ### D1 — [VEMD5080X01](https://www.flux.ai/jecstronic/vemd5080x01~w7f.md) - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: VEMD5080X01 - Manufacturer Name: Vishay Semiconductor Opto Division - Part Type: Sensor - Role Details: 7.5 mm² visible/NIR detector; cathode to PD1_IN, anode to PD_GND - Datasheet URL: https://www.vishay.com/docs/84386/vemd5080x01.pdf - Role: Signal Mixing / Detection **Pins:** - A [pin 4] - K_1 [pin 1] - K_2 [pin 2] - NC [pin 3] ### J1 — [0512810898](https://www.flux.ai/adrian95/0512810898~5lf.md) - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: 0512810898 - Datasheet URL: https://www.molex.com/en-us/products/part-detail/512810898?display=pdf - Role: Sensor Cable Connector - Manufacturer Name: Molex - Mount: Surface Mount - Part Type: Connectors - Role Details: Molex 0512810898: pins 1..8 = 3V3_PWR, GND, SCLK, MOSI, MISO, CS_N, RESET_N, INT_N **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] - 5 [pin 5] - 6 [pin 6] - 7 [pin 7] - 8 [pin 8] - MP_1 [pin 9] - MP_2 [pin 10] ### LED1 — [SFH 7018A](https://www.flux.ai/adrian95/sfh-7018a.md) - Mount: Surface Mount - Role: Signal Generation - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: Bottom-side future placement; 20 mA sequential green/red/IR baseline - Part Type: Optoelectronic Devices - Manufacturer Part Number: SFH 7018A - Symbol Style: parametric-v1 - Package or Case Code: SMD - Datasheet URL: https://look.ams-osram.com/m/25a835d5c1c9b935/original/SFH-7018A.pdf - Manufacturer Name: OSRAM - Compliance: Green **Pins:** - ANODE_GREEN_EMITTER [pin 6] - ANODE_IR_&_RED_EMITTER_1 [pin 2] - ANODE_IR_&_RED_EMITTER_2 [pin 4] - ANODE_IR_&_RED_EMITTER_3 [pin 10] - CATHODE_GREEN_EMITTER_1 [pin 1] - CATHODE_GREEN_EMITTER_2 [pin 7] - CATHODE_GREEN_EMITTER_3 [pin 8] - CATHODE_GREEN_EMITTER_4 [pin 9] - CATHODE_IR_EMITTERIR_EMITTER [pin 3] - CATHODE_RED_EMITTER [pin 5] ### U1 — [MAX86141ENP+](https://www.flux.ai/silicon-yard/max86141enpplus.md) - Part Type: Sensors - Manufacturer Name: Analog Devices - Symbol Style: parametric-v1 - Package or Case Code: WLCSP - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: MAX86141 dual-channel PPG AFE; verified 20-ball WLP pinout from Rev. 5 datasheet - Datasheet URL: https://datasheets.maximintegrated.com/en/ds/MAX86140-MAX86141.pdf - Role: Signal Mixing / Detection - Manufacturer Part Number: MAX86141ENP+ **Pins:** - ~INT [pin B2] - CSB [pin A5] - GND_ANA [pin C4] - GND_DIG [pin C3] - GPIO1 [pin B3] - GPIO2 [pin B4] - LED1_DRV [pin D1] - LED2_DRV [pin C1] - LED3_DRV [pin B1] - PD_GND [pin C5] - PD1_IN [pin D5] - PD2_IN [pin D4] - PGND [pin D3] - SCLK [pin A2] - SDI [pin A4] - SDO [pin A3] - VDD_ANA [pin D2] - VDD_DIG [pin C2] - VLED [pin A1] - VREF [pin B5] ### U2 — [TPS79318-EP](https://www.flux.ai/kicad-part-library/tps79318-ep~318.md) - Role: Power Conversion - Role Details: 3.3 V to 1.8 V low-noise LDO; 200 mA rating for <10 mA expected rail - Manufacturer Name: Texas Instruments Inc. - Manufacturer Part Number: TPS79318-EP - Package or Case Code: SOT-23-5 - Datasheet URL: http://www.ti.com/lit/ds/symlink/tps79333-ep.pdf **Pins:** - BP [pin 4] - EN [pin 3] - GND [pin 2] - IN [pin 1] - OUT [pin 5] ### U3 — [SN74LVC1T45DBVT](https://www.flux.ai/lcsc/sn74lvc1t45dbvt~aonb.md) - Manufacturer Name: TI(德州仪器) - Manufacturer Part Number: SN74LVC1T45DBVT - Package or Case Code: SOT-23-6_L2.9-W1.6-P0.95-LS2.8-BR - Product Info Url: https://lcsc.com/product-detail/Others_Texas-Instruments_SN74LVC1T45DBVT_Texas-Instruments-TI-SN74LVC1T45DBVT_C116653.html - JLCPCB Part Class: Extended Part - Role: Logic-level Shifting - Role Details: Fixed A-to-B translation from 1.8 V MAX86141 SDO to 3.3 V host MISO - LCSC Part Number: C116653 - Part Type: 74 Series - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2410010301_Texas-Instruments-SN74LVC1T45DBVT_C116653.pdf **Pins:** - A [pin 3] - B [pin 4] - DIR [pin 5] - GND [pin 2] - VCCA [pin 1] - VCCB [pin 6] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/mreiscarneiro/max86141-ppg-breakout~rt](https://www.flux.ai/mreiscarneiro/max86141-ppg-breakout~rt).* --- *Generated from [https://www.flux.ai/mreiscarneiro/max86141-ppg-breakout~rt](https://www.flux.ai/mreiscarneiro/max86141-ppg-breakout~rt)*