Knowles KMM1 MEMS Microphone ASIC

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Knowles KMM1 1891 Robertson Road, Suite 500, Ottawa, ON K2H 5B7 Canada Tel: 613-829-0414 chipworks.com

Some of the information in this report may be covered by patents, mask and/or copyright protection. This report should not be taken as an inducement to infringe on these rights. Chipworks Inc. 2015 all rights reserved. Chipworks and the Chipworks logo are registered trademarks of Chipworks Inc. This report is provided exclusively for the use of the purchasing organization. It can be freely copied and distributed within the purchasing organization, conditional upon the accompanying Chipworks accreditation remaining attached. Distribution of the entire report outside of the purchasing organization is strictly forbidden. The use of portions of the document for the support of the purchasing organization's corporate interest (e.g., licensing or marketing activities) is permitted, as defined by the fair use provisions of the copyright act. Accreditation to Chipworks must be attached to any portion of the reproduced information. CAR-1510-903 29701DYJC Revision 1.0 Published: November 13, 2015

Overview Introduction Brief Design Overview Component Descriptions Device Summary Figures To view, please click on the appropriate bookmark in the panel on the left. 0.1.1 Package Markings 0.1.2 Package X-Ray 0.1.3 Die Markings 0.2.1 Die Photograph Top Metal Layer 0.2.2 Die Photograph Polysilicon Layer 0.2.3 Annotated Die Photograph 0.2.4 Die Architecture Schematics 1.0.0 Top Level Diagram 2.0.0 Transducer Interface 2.1.0 Switch Control 2.2.0 Frequency Divider 3.0.0 Pre-Amplifier 3.1.0 Amplifier with Multiple Buffered Outputs 3.2.0 Amplifier with Multiple Buffered Outputs 3.3.0 Common-Mode Control 3.4.0 Parallel Load Resistor 3.5.0 Differential Op-Amp 3.6.0 DC Extractor 3.7.0 Bias Generator 3.8.0 Level Detector with Hysteresis

4.0.0 Delta-Sigma ADC 4.1.0 Sampler and First Integrator 4.1.1 ADC Feedback Logic 4.1.2 Counter 4.1.3 Delay Circuit 4.1.4 Data Output MUX 4.1.5 Counter Circuit 4.1.6 Counter 4.1.7 Clock Phase Generator 4.2.0 Integrator 4.2.1 Differential Amplifier 4.2.2 Common-Mode Feedback Network 4.2.3 ADC Sampling Capacitors 4.3.0 Summing Integrator 4.3.1 Differential Amplifier 4.3.2 Common-Mode Feedback Network 4.4.0 Integrator 4.4.1 Differential Amplifier 4.5.0 Summers and Quantizers 4.6.0 ADC Digital Section 1 4.7.0 ADC Digital Section 2 4.8.0 ADC Bias Currents 4.8.1 Weighted Summer 4.8.2 Weighted Summer 4.8.3 Quantizing Comparator 5.0.0 Data Pad Buffer 5.1.0 Output Buffer Control 6.0.0 Clock Buffer and Power-Up 7.0.0 Voltage Pump 7.1.0 Charge Pump Cell 1 7.2.0 Charge Pump Cell 2

7.3.0 Charge Pump Cell 3 7.4.0 Charge Pump Cell 4 7.5.0 Buffer Amplifier 8.0.0 Bias Current Generator 9.0.0 Voltage and Current Sources 9.1.0 Current Reference Generator 9.2.0 Voltage Follower 10.0.0 Control Interface 10.1.0 Comparator 10.2.0 Comparator 10.3.0 Comparator 10.4.0 Comparator 10.5.0 Voltage Bias Generator 10.6.0 Shift Register 10.7.0 Switched Current Sink 11.0.0 Test Access Switches 11.1.0 Decoder 11.2.0 Decoder 12.0.0 VDD and GND Pads Cell Library About Chipworks

About Chipworks Patent and Technology Partner to the World s Most Successful Companies For over 20 years, Chipworks has been a trusted patent and technology partner to the world s largest and most successful companies. Business leaders rely on us to help them identify and fully leverage their most valuable patents and provide crucial analysis of high-revenue products in the most competitive, fastest changing technology markets. By combining deep patent and market knowledge with an unmatched ability to analyze the broadest range of technology products we are able to provide the most insightful Patent Intelligence and Competitive Technical Intelligence services in the industry. Contact Chipworks To find out more information about this report, or any other reports in our library, please contact Chipworks at 1-613-829-0414. Chipworks 1891 Robertson Road, Suite 500 Ottawa, Ontario K2H 5B7 Canada T 1-613-829-0414 F 1-613-829-0515 Web site: www.chipworks.com Email: info@chipworks.com Please send any feedback to feedback@chipworks.com