Skip to main content
X

RAK18033 WisBlock Audio Stereo Microphone Header Module Datasheet

Overview​

Description​

RAK18033 is a WisBlock Audio Stereo Microphone Header module that allows you to connect two PDM Microphone modules to create a stereo sound input. It is only composed of connectors and still requires PDM Microphone modules like RAK18030, RAK18031, or RAK18032 to be functional.

Features​

  • Module specifications

    • Stereo Microphone Header
    • Compatible with WisBlock Audio PDM Microphones

  • Module size

    • 15 x 25 mm

Specifications​

Overview​

Figure 4103: RAK18033 WisBlock Audio Stereo Microphone Header Module top and bottom view

Mounting​

Mount to WisBlock Base​

Figure 2 shows the mounting mechanism of the RAK18033 module on a WisBlock Base board. The RAK18033 module can be mounted on the IO slots.

Figure 4104: RAK18033 mounted to the WisBlock Base
Mount to WisBlock Audio Stack​

With the use of WisBlock Audio Spacer, the RAK18033 can be mounted to any other WisBlock Audio module. Figure 3 shows the mounting mechanism of the RAK18033 on a Wisblock Audio Stack.

Figure 4105: RAK18033 mounted to the WisBlock Audio Stack

Hardware​

The hardware specification is categorized into four (4) parts. It shows the pinouts of the module 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 RAK18033 Audio Stereo Microphone Header Module.

Pin Definition​

WisBlock IO Connector​

The RAK18033 WisBlock Audio Stereo Microphone comprises a standard WisBlock connector. The WisBlock connector allows the RAK18033 module to be mounted to a WisBlock Base board. The pin order of the connector and the pinout definition is shown in Figure 4.

Figure 4106: RAK18033 WisBlock Module pinout diagram
NOTE
  • 3V3 and GND are power supply from the WisBlock Base.
  • MIC_CTR_IO2 is the GPIO from WisBlock Core. Reserved control signal.
  • MIC_PDM1_Data and MIC_PDM1_CLK are PDM signals.

Mechanical Characteristics​

Board Dimensions​

Figure 5 shows the dimensions and the mechanical drawing of the RAK18033 module.

Figure 4107: RAK18033 WisBlock Sensor mechanical drawing
WisBlock Connector PCB Layout​
Figure 4108: WisBlock Connector PCB footprint and recommendations

Schematic Diagram​

Figure 7 below shows the full schematic diagram of the RAK18033 Audio Stereo Microphone Header module.

Figure 4109: RAK18033 schematic diagram