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Digital to Analog Converter (DAC) PCB 

The intended use is for the evaluation and test of the Knowles Electronics line of 
MEMS Digital PDM (Pulse Density Modulation) microphones.

This board is designed to support R&D activities, and is not intended for 
qualification or production test use.

 
The DAC PCB provides the interface circuitry for two digital microphones. 
Power is provided via a standard 2.5mm power jack. A 3.5mm stereo headphone 
jack is available for quick verification of audio output. 

Note: Please reference Knowles Application Note – MEMS Digital 
Microphone Evaluation Board: SP-703 for more information.

3.5mm 
Headphone
Jack

6-Pin Edge
Connector

2.5mm Power Supply Jack

Input Voltage: 

100-240V ~0.4A,  

  

50-60Hz

Output Voltage: 

+12V DC@1A

Figure 1

SiSonic

 FLEX Evaluation Kit

KAS-33100-001

USER GUIDE

© 2012 Knowles Electronics

2

www.knowles.com

Summary of Contents for SiSonic KAS-33100-001

Page 1: ...001 evaluation kit allows for simple and easy evaluation of SiSonic MEMS microphones This evaluation system can be used to evaluate up to two channels of audio for Digital Page 6 MEMS microphones alon...

Page 2: ...circuitry for two digital microphones Power is provided via a standard 2 5mm power jack A 3 5mm stereo headphone jack is available for quick verification of audio output Note Please reference Knowles...

Page 3: ...s Note See the product datasheet for specifications http www knowles com search product htm x_sub_cat_id 3 Analog microphones will need to be powered and connected externally See Page 8 Figure 2 SiSon...

Page 4: ...Figure 3 SiSonic FLEX Evaluation Kit KAS 33100 001 USER GUIDE 2012 Knowles Electronics 4 www knowles com Closed State Open State...

Page 5: ...ound SEL Select CLK Clock DAT Data VDD Power GND Ground SiSonic FLEX Evaluation Kit KAS 33100 001 USER GUIDE 2012 Knowles Electronics 5 www knowles com Analog FLEX PCBs Analog Models 2 each 3 SPQ0410H...

Page 6: ...elow 1 Connect one digital FLEX PCB Assembly to an Adapter PCB The edge connectors must be visible Figure 4 Note The FLEX PCBs must be inserted when the Adapter PCBs are in the open orientation Figure...

Page 7: ...AC PCB can only be used with digital microphones Analog microphones will not operate 3 Insert a power supply plug jack not included into to the DAC PCB Figure 1 a Input Voltage 100 240V 0 4A 50 60Hz b...

Page 8: ...priate equipment See the product datasheet for specifications www knowles com search product htm x_sub_cat_id 3 Figure 6 The information contained in this literature is based on our experience to date...

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