Analog Devices has sold its MEMS Microphone product line to InvenSense.
Please visit the InvenSense ADMP621 product page for all technical support and sales information.
The ADMP621 is a high sound pressure level (SPL), ultralow noise, low power, digital output, bottom ported omnidirectional MEMS microphone. This microphone clips at 133 dB SPL, which is useful for clearly capturing audio in loud environments. The ADMP621 consists of a MEMS microphone element and an impedance converter amplifier followed by a fourth-order Σ-Δ modulator. The digital interface allows the pulse density modulated (PDM) output of two microphones to be time multiplexed on a single data line using a single clock. The ADMP621 is pin compatible with the ADMP421 and ADMP521 microphones, providing an easy upgrade path.
The ADMP621 has a high SNR of 65 dBA and sensitivity of −46 dBFS. The ADMP621 has an extended wideband frequency response, resulting in natural sound with high intelligibility. Low current consumption and a sleep mode with less than 5.5 µA of current consumption enables long battery life for portable applications.
The ADMP621 is available in a thin 4 mm × 3 mm × 1 mm surface-mount package. It is reflow solder compatible with no sensitivity degradation.
|Title||Content Type||File Type|
|ADMP621: Wide Dynamic Range Microphone with PDM Digital Output Data Sheet (Rev 0, 07/2013) (pdf, 306 kB)||Data Sheets|
|AN-1140: Microphone Array Beamforming (pdf, 198 kB)||Application Notes|
|AN-1124: Recommendations for Sealing Analog Devices, Inc., Bottom-Port MEMS Microphones from Dust and Liquid Ingress (pdf, 111 kB)||Application Notes|
|AN-1112: Microphone Specifications Explained (PDF, 139 kB)||Application Notes|
|AN-1068: Reflow Soldering of the MEMS Microphone (pdf, 119 kB)||Application Notes|
|AN-1003: Recommendations for Mounting and Connecting Analog Devices, Inc., Bottom-Ported MEMS Microphones (pdf, 118 kB)||Application Notes|
|UG-326: PDM Digital Output MEMS Microphone Evaluation Board (pdf, 94 kB)||User Guides|
|MS-2472: Analog and Digital MEMS Microphone Design Considerations (pdf, 144 kB)||Technical Articles|
|Glossary of EE Terms||Glossary||HTML|
The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.