Application Notes (10)
- AN-1181: Using a MEMS Microphone in a 2-Wire Microphone Circuit (pdf, 132 kB)
- AN-1165: Op Amps for MEMS Microphone Preamp Circuits (pdf, 165 kB)
- AN-1140: Microphone Array Beamforming (pdf, 198 kB)
- AN-1112: Microphone Specifications Explained (PDF, 139 kB)
- AN-1068: Reflow Soldering of the MEMS Microphone (pdf, 119 kB)
- AN-1056: Capless Headphone Virtual Ground Short-Circuit Protection for the ADAU1361 and ADAU1761 Low Power Codecs (pdf, 77 kB)
- AN-1006: Using the EVAL-ADUSB2EBZ (pdf, 349 kB)
- AN-1003: Recommendations for Mounting and Connecting Analog Devices, Inc., Bottom-Ported MEMS Microphones (pdf, 118 kB)
- AN-951: Using Hardware Controls with SigmaDSP GPIO Pins (pdf, 439 kB)
- AN-1124: Recommendations for Sealing Analog Devices, Inc., Bottom-Port MEMS Microphones from Dust and Liquid Ingress (pdf, 111 kB)
Circuit Note (4)
- CN-0078: iMEMS Digital Microphone Simplifies the Interface to a SigmaDSP Audio Codec (pdf)
- CN-0207: High Performance iMems Analog Microphone's Simple Interface to SigmaDSP Audio Codec (pdf, 126 kB)
- CN-0219: S/PDIF and I2S Interface for a SigmaDSP Codec Using the ADAV801/ADAV803 Audio Codec (pdf, 254 kB)
- CN-0262: Low Noise Analog MEMS Microphone and Preamp with Compression and Noise Gating (pdf)
Technical Articles (3)
-
A History of Consumer Microphones:
(pdf, 9034 kB)
The Electret Condenser Microphone Meets Micro-Electro-Mechanical-Systems (Accoustics Today, April 2009) -
MS-2275: Common Inter-IC Digital Interfaces for Audio Data Transfer
(pdf, 106 kB)
by Jerad Lewis, Applications Engineer, MEMS Microphone Group, Analog Devices, Inc. - MS-2348: Low Self Noise: The First Step to High Performance MEMS Microphone Applications (pdf, 257 kB)
Software Manuals (1)
Data Sheets (5)
- ADAU1761: SigmaDSP® Stereo, Low Power, 96 kHz, 24-Bit Audio Codec with Integrated PLL Data Sheet (Rev C, 09/2010) (pdf, 1354 kB)
- ADMP401: Omnidirectional Microphone with Bottom Port and Analog Output Data Sheet (Rev E, 07/2012) (pdf, 175 kB)
- ADMP404: Omnidirectional Microphone with Bottom Port and Analog Output Data Sheet (Rev C, 07/2012) (pdf, 343 kB)
- ADMP405: Omnidirectional Microphone with Bottom Port and Analog Output Data Sheet (Rev B, 09/2011) (pdf, 399 kB)
- ADMP504: Ultralow Noise Microphone with Bottom Port and Analog Output Data Sheet (Rev A, 06/2012) (pdf, 266 kB)
Design & Integration Files (1)
-
CN0207 Design & Integration Files
(zip, 2 kB)
- Schematic
- Bill of Materials
- Assembly Drawing
Design Tool (2)
-
Microphone Beamforming Simulation Tool (32-bit)
Software tool for simulating the response of microphone beamforming arrays. -
Microphone Beamforming Simulation Tool (64-bit)
Software tool for simulating the response of microphone beamforming arrays.
Device Drivers (2)
Documentation (8)
- ADAU1761 Evaluation Board (EVAL-ADAU1761Z) (pdf, 972 kB)
- Linux Driver
- SigmaDSP Evaluation Boards
- UG-126: EVAL-ADMP401Z Bottom-Ported Analog Output MEMS Microphone Evaluation Board (pdf, 54 kB)
- UG-142: EVAL-ADMP404Z-FLEX Bottom-Ported Analog Output MEMS Microphone Evaluation Board (pdf, 77 kB)
- UG-143: EVAL-ADMP405Z-FLEX Bottom-Ported Analog Output MEMS Microphone Evaluation Board (pdf, 111 kB)
- UG-278: EVAL-ADMP401Z-FLEX: Bottom-Ported Analog Output MEMS Microphone Evaluation Board (pdf, 88 kB)
- UG-325: EVAL-ADMP504Z-FLEX: Bottom-Ported Analog Output MEMS Microphone Evaluation Board (pdf, 105 kB)
FAQs/RAQs (38)
- After I link-compile-download my project, the bar at the bottom of SigmaStudio turns green. Does this mean my program downloaded to the DSP successfully?
- Can ADI MEMS mics be soldered to a flex PCB?
- Can digital microphone PDM output be interfaced with I²S directly?
- Can I use SigmaStudio without hardware connected?
- Could direct soldering to a PCB cause vibration pickup by the mic?
- Could software be used to eliminate competitor mics’ response peaks?
- Due to open package, are there problems with humidity (condensation) when cooling down/heating up the device?
- How can I check that I have proper communication between SigmaStudio and the SigmaDSP hardware?
- How can I eliminate pops when changing the delay parameter at run-time?
- How can I get a copy of SigmaStudio?
- How can I program and tune my target application using SigmaStudio?
- How can I see exactly what SigmaStudio is writing to the target hardware?
- How can I tune my own hardware design using SigmaStudio?
- How can I write my own algorithms in SigmaStudio?
- How do I change the sampling rate of my design in SigmaStudio?
- How do I protect my SigmaDSP design against power supply overvoltage and ESD?
- I already have a copy of SigmaStudio. How can I get the latest version?
- I can't use the maximum delay memory in my project. What's happening?
- Is -26 dBFS digital mic sensitivity higher than -42 dBV analog mic sensitivity?
- Is a microphone with -37 dBV sensitivity better than a microphone with -42 dBV (lower) sensitivity?
- My application requires that I use multiple blocks that generate many addresses that I then have to map to my microcontroller code. Can I fix specific memory addresses for specific blocks to avoid all this mapping overhead?
- My signal flow is running out of instructions. What can I do to save resources?
- What advanced algorithms are available for SigmaDSP?
- What are the PC requirements for SigmaStudio?
- What documentation is available for SigmaStudio?
- What evaluation board is available for the ADAU1761?
- What evaluation boards are available for the SigmaDSP processors?
- What is needed to boot a SigmaDSP processor?
- What is the processing power and RAM sizes of the different SigmaDSPs?
- What is the recommended thickness of the PCB for the ADI MEMS mics?
- When should I use double precision and when should I use single precision filters?
- When the signal input to my compressor is above 6 dB, the compression stops and my signal starts increasing. What's happening?
- Where can I find a description of the changes made in the latest version of SigmaStudio?
- Where can I get further support for the SigmaDSP?
- Where can I see how much of the SigmaDSP resources my project consumes?
- Which SigmaDSP is right for my application?
- Which SigmaDSP parts are qualified for automotive applications?
- Why not design a mic with the highest sensitivity?
IBIS Models (1)
- ADAU1361/ADAU1761 IBIS Models
Overview (2)
SigmaStudio Overview (1)
Solutions Bulletins (2)
-
Industrial ICs
Industrial ICs Solutions Bulletin, Volume 10, Issue 8 - Industrial ICs Solutions Bulletin, Volume 10, Issue 8 (pdf, 4250 kB)
User Guides (5)
- UG-126: EVAL-ADMP401Z Bottom-Ported Analog Output MEMS Microphone Evaluation Board (pdf, 54 kB)
- UG-142: EVAL-ADMP404Z-FLEX Bottom-Ported Analog Output MEMS Microphone Evaluation Board (pdf, 77 kB)
- UG-143: EVAL-ADMP405Z-FLEX Bottom-Ported Analog Output MEMS Microphone Evaluation Board (pdf, 111 kB)
- UG-278: EVAL-ADMP401Z-FLEX: Bottom-Ported Analog Output MEMS Microphone Evaluation Board (pdf, 88 kB)
- UG-325: EVAL-ADMP504Z-FLEX: Bottom-Ported Analog Output MEMS Microphone Evaluation Board (pdf, 105 kB)
Videos (3)
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ADI MEMS Mics Set New Bar in Noise Performance
Analog Devices has launched a new family of MEMS microphones with the lowest noise floor in the industry. Learn about the first member of this family, the ADMP504, and how these microphones can give your design a competitive edge. -
Introducing iMEMS® Microphones
This video compares the ADMP401 Analog MEMS and the ADMP421 Digital MEMS with a BK Type 4939 Measurement microphone. High performance and reliability with 61dB A-weighted SNR and flat frequency response from 100Hz to > 12kHz. -
Sigma Studio Overview
Familiar audio processing blocks can be wired together as in a schematic, and the compiler generates DSP-ready code and a control surface for setting and tuning parameters.
Analog Dialogue (1)
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Analog Dialogue: Toward More Compact Digital Microphones
(Analog Dialogue, Vol. 41, September 2007)
