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sansel

sansel

@copilot explain this project.
1y

copilot

This project is a reference design for a PCB that utilizes the TMF8801−1BMTMF8801-1BM time-of-flight (ToF) sensor from ams-OSRAM. The design includes several key electronic components, such as resistors, capacitors, voltage regulators, and GPIO connectors. The TMF8801 ToF sensor measures the time it takes for light to travel to an object and reflect back, enabling precise distance measurement.
Key Design Elements Voltage Regulation
  • The AP2112K−3.3TRG1AP2112K-3.3TRG1 voltage regulator is used to supply a stable 3.3V to the various components, including the TMF8801 sensor.
MOSFETs
  • Two BSS138BSS138 MOSFETs (labeled Q1 and Q2) are used to manage the logic signals.
Connectors
  • Connectors such as SM04B−SRSS−TBSM04B-SRSS-TB (referenced as J1 and J2) are used for interfacing the board with external I2C devices and power sources.
Capacitors
  • Multiple capacitors (C1, C2, C3, C4, and C6) are included for filtering and stabilizing voltages. Typical values are 0.1μF for decoupling capacitors and 10μF for bulk capacitors.
Resistors
  • Resistors with various values (1kΩ, 10kΩ) are used for pull-up/pull-down purposes and current limiting.
Nets and Connectivity
  • The schematic defines specific nets (e.g., VCC, GND, SCL, SDA) that interconnect the components to ensure the correct supply, control, and communication pathways.
Key Connections and Components Power Supply
  • VCC: The main supply voltage required by the voltage regulator and other components.
  • 3V3: The regulated 3.3V output from the voltage regulator powering the logic circuitry and the TMF8801.
Communication and Control
  • I2C Interface:
    • SCL: Clock line for the I2C interface.
    • SDA: Data line for the I2C interface.
Component Connections
  • Voltage Regulator (U1U1):
    • Connect U1:VIN to VCC.
    • Connect U1:GND to GND.
    • Connect U1:VOUT to multiple 3V3 points.
  • TMF8801 ToF Sensor (IC1IC1):
    • Connect IC1:VDDC, VDD, and VDDV to 3V3.
    • Connect IC1:GND, GNDC, and GNDV to GND.
    • Connect IC1:SCL to Net: Net 5.
    • Connect IC1:SDA to Net: Net 14.
    • Connect IC1:EN to Net: Net 4.
Assumptions
  • The voltage source is assumed to be a stable 5V supply that gets regulated down to 3.3V to power the sensor and logic.
  • The I2C communication interface is used for controlling and reading data from the TMF8801 sensor.
Let me know if you need any details on specific connections or have any other questions!
1y
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SCL
VCC
J1
SDA
Q2
Q1
TMF_EN
R5
Resistance
10K Ω
3V3
3V3
U1
GPIO0
VCC
IC1
VCC
3V3
3V3
VCC
C1
Capacitance
0.1u F
3V3
3V3
R4
Resistance
1K Ω
TMF_EN
R1
Resistance
10K Ω
3V3
3V3
INT
3V3_SCL
C6
Capacitance
10u F
J3
3V3
3V3_SDA
3V3
3V3_SDA
R3
Resistance
10K Ω
GPIO1
R8
Resistance
10k Ω
3V3
C3
Capacitance
0.1u F
R2
Resistance
10K Ω
SDA
C2
Capacitance
0.1u F
3V3
GPIO1
3V3_SCL
SCL
J2
  • Ground
    Ground
    A common return path for electric current. Commonly known as ground.
    jharwinbarrozo
    20.5M
  • Net Portal
    Net Portal
    Wirelessly connects nets on schematic. Used to organize schematics and separate functional blocks. To wirelessly connect net portals, give them same designator. #portal
    jharwinbarrozo
    43.0M
  • Power Net Portal
    Power Net Portal
    Wirelessly connects power nets on schematic. Identical to the net portal, but with a power symbol. Used to organize schematics and separate functional blocks. To wirelessly connect power net portals, give them the same designator. #portal #power
    jharwinbarrozo
    11.4M
  • Generic Resistor
    Generic Resistor
    A generic fixed resistor for rapid developing circuit topology. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard resistor values: 1.0Ω 10Ω 100Ω 1.0kΩ 10kΩ 100kΩ 1.0MΩ 1.1Ω 11Ω 110Ω 1.1kΩ 11kΩ 110kΩ 1.1MΩ 1.2Ω 12Ω 120Ω 1.2kΩ 12kΩ 120kΩ 1.2MΩ 1.3Ω 13Ω 130Ω 1.3kΩ 13kΩ 130kΩ 1.3MΩ 1.5Ω 15Ω 150Ω 1.5kΩ 15kΩ 150kΩ 1.5MΩ 1.6Ω 16Ω 160Ω 1.6kΩ 16kΩ 160kΩ 1.6MΩ 1.8Ω 18Ω 180Ω 1.8KΩ 18kΩ 180kΩ 1.8MΩ 2.0Ω 20Ω 200Ω 2.0kΩ 20kΩ 200kΩ 2.0MΩ 2.2Ω 22Ω 220Ω 2.2kΩ 22kΩ 220kΩ 2.2MΩ 2.4Ω 24Ω 240Ω 2.4kΩ 24kΩ 240kΩ 2.4MΩ 2.7Ω 27Ω 270Ω 2.7kΩ 27kΩ 270kΩ 2.7MΩ 3.0Ω 30Ω 300Ω 3.0KΩ 30KΩ 300KΩ 3.0MΩ 3.3Ω 33Ω 330Ω 3.3kΩ 33kΩ 330kΩ 3.3MΩ 3.6Ω 36Ω 360Ω 3.6kΩ 36kΩ 360kΩ 3.6MΩ 3.9Ω 39Ω 390Ω 3.9kΩ 39kΩ 390kΩ 3.9MΩ 4.3Ω 43Ω 430Ω 4.3kΩ 43KΩ 430KΩ 4.3MΩ 4.7Ω 47Ω 470Ω 4.7kΩ 47kΩ 470kΩ 4.7MΩ 5.1Ω 51Ω 510Ω 5.1kΩ 51kΩ 510kΩ 5.1MΩ 5.6Ω 56Ω 560Ω 5.6kΩ 56kΩ 560kΩ 5.6MΩ 6.2Ω 62Ω 620Ω 6.2kΩ 62KΩ 620KΩ 6.2MΩ 6.8Ω 68Ω 680Ω 6.8kΩ 68kΩ 680kΩ 6.8MΩ 7.5Ω 75Ω 750Ω 7.5kΩ 75kΩ 750kΩ 7.5MΩ 8.2Ω 82Ω 820Ω 8.2kΩ 82kΩ 820kΩ 8.2MΩ 9.1Ω 91Ω 910Ω 9.1kΩ 91kΩ 910kΩ 9.1MΩ #generics #CommonPartsLibrary
    jharwinbarrozo
    1.5M
  • Generic Capacitor
    Generic Capacitor
    A generic fixed capacitor ideal for rapid circuit topology development. You can choose between polarized and non-polarized types, its symbol and the footprint will automatically adapt based on your selection. Supported options include standard SMD sizes for ceramic capacitors (e.g., 0402, 0603, 0805), SMD sizes for aluminum electrolytic capacitors, and through-hole footprints for polarized capacitors. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard capacitor values: 1.0pF 10pF 100pF 1000pF 0.01uF 0.1uF 1.0uF 10uF 100uF 1000uF 10,000uF 1.1pF 11pF 110pF 1100pF 1.2pF 12pF 120pF 1200pF 1.3pF 13pF 130pF 1300pF 1.5pF 15pF 150pF 1500pF 0.015uF 0.15uF 1.5uF 15uF 150uF 1500uF 1.6pF 16pF 160pF 1600pF 1.8pF 18pF 180pF 1800pF 2.0pF 20pF 200pF 2000pF 2.2pF 22pF 20pF 2200pF 0.022uF 0.22uF 2.2uF 22uF 220uF 2200uF 2.4pF 24pF 240pF 2400pF 2.7pF 27pF 270pF 2700pF 3.0pF 30pF 300pF 3000pF 3.3pF 33pF 330pF 3300pF 0.033uF 0.33uF 3.3uF 33uF 330uF 3300uF 3.6pF 36pF 360pF 3600pF 3.9pF 39pF 390pF 3900pF 4.3pF 43pF 430pF 4300pF 4.7pF 47pF 470pF 4700pF 0.047uF 0.47uF 4.7uF 47uF 470uF 4700uF 5.1pF 51pF 510pF 5100pF 5.6pF 56pF 560pF 5600pF 6.2pF 62pF 620pF 6200pF 6.8pF 68pF 680pF 6800pF 0.068uF 0.68uF 6.8uF 68uF 680uF 6800uF 7.5pF 75pF 750pF 7500pF 8.2pF 82pF 820pF 8200pF 9.1pF 91pF 910pF 9100pF #generics #CommonPartsLibrary
    jharwinbarrozo
    1.5M
  • Generic Inductor
    Generic Inductor
    A generic fixed inductor for rapid developing circuit topology. *You can now change the footprint and 3D model at the top level anytime you want. This is the power of #generics
    jharwinbarrozo
    15.1k
  • Terminal
    Terminal
    An electrical connector acting as reusable interface to a conductor and creating a point where external circuits can be connected.
    natarius
  • RMCF0805JT47K0
    RMCF0805JT47K0
    47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film #forLedBlink
    jharwinbarrozo
    1.2M
  • 875105359001
    875105359001
    10uF Capacitor Aluminum Polymer 20% 16V SMD 5x5.3mm #forLedBlink #commonpartslibrary #capacitor #aluminumpolymer #radialcan
    jharwinbarrozo
    1.2M
  • CTL1206FYW1T
    CTL1206FYW1T
    Yellow 595nm LED Indication - Discrete 1.7V 1206 (3216 Metric) #forLedBlink
    jharwinbarrozo
    1.1M

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TMF8801-1BM Reference Design

TMF8801-1BM Reference Design
Description

Created
Last updated by vasyl
2 Contributor(s)
vasyl
jharwinbarrozo

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