RAK12003 WisBlock Infrared Temperature Sensor Module Datasheet

Overview

Figure 2247: RAK12003 WisBlock Infrared Temperature Sensor Module

Description

The RAK12003 WisBlock Infrared Temperature Sensor Module is part of the RAKwireless WisBlock Series. It can be used for an accurate contactless thermal measurement for applications such as General purpose industry, temperature control of moving and hard to reach parts, body temperature measurement, non-contact thermometer for mobile and IoT application.

Features

• Sensor specifications

  • I2C interface
  • Object temperatures between -20 °C and 100 °C
  • Accuracy ±0.2° C within the narrow object temperature range from 35 ˚C to 42 ˚C (medical applications)
  • Factory calibrated
  • 50 ° field of view
  • -20 °C to 85 °C operational temperature range
  • Refresh rate configurable between 0.5 Hz to 64 Hz
  • Power Supply Voltage: 3.3 V - 3.6 V
  • Sleep current: < 2.5 µA
  • Chipset: Melexis MLX90632SLD-DCB-000-RE

• Size

  • 10 x 10 mm

The refresh rate is the speed that the MLX90632 RAM will be updated with results. It is configurable and the rates are shown in the table below:

Refresh Rate (Hz)	Time (ms)
0.5	2000
1	1000
2	500
4	250
8	125
16	62.5
32	31.25
64	15.625

Specifications

Overview

Mounting

Figure 2 shows the mounting mechanism of the RAK12003 module on a WisBlock Base board. The RAK12003 module can be mounted on the slots: A, B, C, D, E, & F.

Figure 2248: RAK12003 WisBlock Infrared Temperature Sensor Mounting

Hardware

The hardware specification is categorized into five parts that cover the chipset and pinouts and the corresponding functions and diagrams of the board. It also presents the parameters and their standard values in terms of electrical and mechanical.

Chipset

Vendor	Part Number	Accuracy
Melexis	MLX90632SLD-DCB-000-RE	Medical accuracy

Figure 2249: Melexis MLX90632 FIR sensor

Pin Definition

The RAK12003 WisBlock Infrared Temperature Sensor Module comprises a standard WisBlock connector. The WisBlock connector allows the RAK12003 module to be mounted to a WisBlock Base board. The pin order of the connector and the pinout definition is shown in Figure 4.

NOTE

Only the I2C related pins, VDD, and GND are connected to this module.

Figure 2250: RAK12003 WisBlock Infrared Temperature Sensor connector pinout

Electrical Characteristics

Recommended Operating Conditions

Symbol	Description	Min.	Nom.	Max.	Unit
VDD	Power supply for the module		3.3	3.6	V
IDDPR	Sleep current		1.5	2.5	µA
IDD	Measure current (normal mode)	0.5	1	1.4	mA

Mechanical Characteristics

Board Dimensions

Figure 5 shows the dimensions and the mechanic drawing of the RAK12003 module.

Figure 2251: RAK12003 WisBlock Infrared Temperature Sensor Mechanic Drawing

WisConnector PCB Layout

Figure 2252: WisConnector PCB footprint and recommendations

Schematic Diagram

Figure 2253: RAK12003 WisBlock Infrared Temperature Sensor schematics

I2C address and pull-up

By default, the ADDR pin is connected to GND, and R1, R2, R3 are not connected. The WisBlock Base board has pull-up resistors and the I2C 7-bit slave address is 0x3a.