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Distance dToF Imager - TMF8820 (SparkFun Qwiic)
The SparkFun Qwiic dToF TMF8820 Imager is a high-performance direct time-of-flight (dToF) sensor module designed for precise distance measurement. Featuring Single Photon Avalanche Diode (SPAD) technology, a time-to-digital converter (TDC), and advanced histogram-based processing, it provides fast, reliable, and accurate range data up to 5000mm. The onboard 940nm VCSEL laser enables stable performance in both bright light and darkness. Integrated with the Qwiic I2C system, it allows seamless plug-and-play connectivity without soldering, making it perfect for rapid prototyping and development in applications like autofocus systems, object detection, presence sensing, and more.
Package Includes
- 1 x SparkFun Qwiic dToF Imager - TMF8820
Features
- High-Precision Measurement: Range detection up to 5000mm using dToF technology.
- SPAD + TDC Architecture: Provides sub-nanosecond level measurement accuracy.
- 3x3 Multizone Detection: Detects multiple objects across 9 zones for complex environments.
- Built-in Data Processing: All histogram analysis is handled on-chip, reducing the need for external processing.
- Ambient Light Rejection: Integrated optical filter ensures stable performance in varied lighting conditions.
- Easy Qwiic Integration: Plug-and-play I2C connection, no soldering required.
- Adjustable Field of View: Configurable up to 63° diagonal FoV.
- Low Power Operation: Suitable for portable and battery-powered applications.
Specifications
- Operating Voltage: 2.7V to 3.6V (3.3V typical via Qwiic)
- Current Consumption: 8µA (standby), 57mA (active)
- Sensor: AMS TMF8821
- Measurement Range: 10mm to 5000mm
- Light Source: Class 1 940nm VCSEL
- Maximum Read Rate: 30Hz
- Field of View: Adjustable up to 63° diagonal
- I2C Address: 0x41
- Temperature Range: -30°C to +70°C
- Board Size: 1.0" x 1.0" (2.54cm x 2.54cm)
- Breakout Pads: GND, 3.3V, SDA, SCL, INT, GP0/SYNC, GP1, EN
Pinout
| Pin | Description | Direction |
|---|---|---|
| GND | Ground | In |
| 3.3V | Power | In |
| SDA | I2C Data | In/Out |
| SCL | I2C Clock | In/Out |
| INT | Interrupt (data ready) | Out |
| GP0/SYNC | GPIO or sync input | In/Out |
| GP1 | GPIO | In/Out |
| EN | Enable (active high) | In |
Applications
- Camera autofocus systems (LDAF)
- Presence detection in consumer electronics
- Robotic object detection and collision avoidance
- Industrial safety light curtains
Features
- High-Precision Measurement: Range detection up to 5000mm using dToF technology.
- SPAD + TDC Architecture: Provides sub-nanosecond level measurement accuracy.
- 3x3 Multizone Detection: Detects multiple objects across 9 zones for complex environments.
- Built-in Data Processing: All histogram analysis is handled on-chip, reducing the need for external processing.
- Ambient Light Rejection: Integrated optical filter ensures stable performance in varied lighting conditions.
- Easy Qwiic Integration: Plug-and-play I2C connection, no soldering required.
- Adjustable Field of View: Configurable up to 63° diagonal FoV.
- Low Power Operation: Suitable for portable and battery-powered applications.
Specifications
- Operating Voltage: 2.7V to 3.6V (3.3V typical via Qwiic)
- Current Consumption: 8µA (standby), 57mA (active)
- Sensor: AMS TMF8821
- Measurement Range: 10mm to 5000mm
- Light Source: Class 1 940nm VCSEL
- Maximum Read Rate: 30Hz
- Field of View: Adjustable up to 63° diagonal
- I2C Address: 0x41
- Temperature Range: -30°C to +70°C
- Board Size: 1.0" x 1.0" (2.54cm x 2.54cm)
- Breakout Pads: GND, 3.3V, SDA, SCL, INT, GP0/SYNC, GP1, EN
Pinout
| Pin | Description | Direction |
|---|---|---|
| GND | Ground | In |
| 3.3V | Power | In |
| SDA | I2C Data | In/Out |
| SCL | I2C Clock | In/Out |
| INT | Interrupt (data ready) | Out |
| GP0/SYNC | GPIO or sync input | In/Out |
| GP1 | GPIO | In/Out |
| EN | Enable (active high) | In |
Applications
- Camera autofocus systems (LDAF)
- Presence detection in consumer electronics
- Robotic object detection and collision avoidance
- Industrial safety light curtains