RAK12019 WisBlock UV Sensor Module Datasheet
Overview
Description
The RAK12019 is an Ambient Light sensor (ALS) or Ultraviolet Light Sensor (UVS), which is part of the RAKwireless WisBlock sensor series. The measured ambient light intensity and ultraviolet index are interfaced via the I2C bus making it immune to electrical noises, unlike its analog output counterpart. This module utilizes the LTR-390UV-01 sensor from Lite-On.
Features
- Ambient Light Sensor (ALS) or Ultraviolet Light Sensor (UVS)
- I2C interface capable of Standard mode @100 kHz or Fast mode @400kHz communication 1.8 V logic compatible
- Very low power consumption with sleep mode capability
- 13 to 20 bits effective resolution
- Wide dynamic range of 1:18,000,000 with linear response
- Close to human eye spectral response
- Automatic rejection for 50 Hz/60 Hz lighting flicker
- Operating voltage ranges: 1.7 V to 3.6 V
- Current Consumption: 1 uA - 110 uA
- Chipset: Lite-On LTR-390UV-01
- Operating temperature ranges: -40 to +85 ºC
- Built-in temperature compensation circuit
- Programmable interrupt function for ALS, UVS with upper and lower thresholds
- RoHS and Halogen-free compliant
- Module Size: 10 mm x 10 mm
Specifications
Overview
Mounting
Figure 1 shows the mounting mechanism of the RAK12019 module on a WisBlock Base board. The RAK12019 module can be mounted on the slots: C, D, E, & F.
Figure 2594: RAK12019 WisBlock UV Sensor MountingHardware
The hardware specification is categorized into five (5) parts. It shows the chipset of the module and the pinouts and their corresponding functions and diagrams. It also covers the electrical and mechanical parameters that include the tabular data of the functionalities and standard values of the RAK12019 WisBlock UV Sensor Module.
Chipset
| Vendor | Part number |
|---|---|
| Lite-On | LTR-390UV-01 |
Pin Definition
The RAK12019 WisBlock UV Sensor Module comprises a standard WisBlock connector. The WisBlock connector allows the RAK12019 module to be mounted to a WisBlock Base board. The pin order of the connector and the pinout definition is shown in Figure 3.
- I2C related pin, INT pin, 3V3_S and GND are connected to WisConnector
Figure 2595: RAK12019 WisBlock UV Sensor PinoutIf a 24-pin WisBlock Sensor connector is used, the IO used for the output pulse depends on what slot the module is plugged in. The following table shows the default IO used for different slots:
| SLOT C | SLOT D | SLOT E | SLOT F |
|---|---|---|---|
| WB_IO3 | WB_IO5 | WB_IO4 | WB_IO6 |
Electrical Characteristics
Power Supply Ratings
| Symbol | Description | Condition | Min. | Nom. | Max. | Unit |
|---|---|---|---|---|---|---|
| 3V3_S | LTR-390UV-01 Operating Voltage | Input voltage must within this range | 2.5 | 3.3 | 3.6 | V |
| Isd | Shut down current | VDD is 2.8 V | - | 1 | - | uA |
| ALS | ALS Active Mode Current | VMax. duty cycle, Vdd=2.8V, Gain 3x | - | 110 | - | uA |
| UVS | UVS Active Mode Current | Max. duty cycle, Vdd=2.8V | - | 100 | - | uA |
| WakeupTime | Wakeup Time from Standby | From Standby to Active mode where measurement can start | - | 5 | 10 | ms |
Mechanical Characteristics
Board Dimensions
Figure 3 shows the dimensions and the mechanical drawing of the RAK12019 module.
Figure 2596: RAK12019 WisBlock UV Sensor DimensionsWisConnector PCB Layout
Figure 2597: WisConnector PCB Footprint and RecommendationsSchematic Diagram
Figure 2598: RAK12019 WisBlock UV Sensor Schematic Diagram
