Add to Signal Chain Designer

ADMP521:  Ultra-Low Noise Microphone with Bottom Port and PDM Digital Output

Product Details

Product Status:Recommended for New Designs

The ADMP521 is a high performance, ultra low noise, low power, digital output bottom-ported omnidirectional MEMS microphone. The ADMP521 consists of a MEMS microphone element and an impedance converter amplifier followed by a fourth-order Σ-Δ modulator. The digital interface allows for the pulse density modulated (PDM) output of two microphones to be time-multiplexed on a single data line using a single clock. The ADMP521 is function- and pin-compatible with the ADMP421 microphone, providing an easy upgrade path.

The ADMP521 has a very high SNR and common sensitivity of −26 dBFS, making it an excellent choice for far field applications. The ADMP521 has an extended wideband frequency response resulting in natural sound with high intelligibility. Low current consumption and a sleep mode with less than 1 µA current consumption enables long battery life for portable applications. The ADMP521 complies with the TIA-920 Telecommunications Telephone Terminal Equipment Transmission Requirements for Wideband Digital Wireline Telephones standard.

The ADMP521 is available in a thin 3 mm × 4 mm × 1 mm surface-mount package. It is reflow solder compatible with no sensitivity degradation. The ADMP521 is halide free.

APPLICATIONS

  • Smartphones and feature phones
  • Tablet computers
  • Teleconferencing systems
  • Digital still & video cameras
  • Bluetooth headsets
  • Notebook PCs
  • Security and surveillance

FEATURES and BENEFITS

  • Small and thin 3 mm × 4 mm × 1 mm surface-mount package
  • Omnidirectional response
  • Very High SNR of 65 dBA
  • Sensitivity of −26 dBFS
  • Extended frequency response from 100 Hz to
    16 kHz
  • Low current consumption:
    900 µA
  • Sleep mode for extended battery life, <1 µA consumption
  • 120 dB maximum SPL
  • High PSR of -80 dBFS
  • Fourth-order Σ-Δ modulator
  • Digital PDM output
  • Compatible with Sn/Pb and
    Pb-free solder processes
  • RoHS/WEEE compliant

Functional Block Diagram for ADMP521

Similar Products

  • Consider ADMP401 for Omnidirectional Microphone with Bottom Port and Analog Output
  • Consider ADMP404 for Omnidirectional Microphone with Bottom Port and Analog Output
  • Consider ADMP405 for Omnidirectional Microphone with Bottom Port and Analog Output
  • Consider ADMP421 for Omnidirectional Microphone with Bottom Port and PDM Digital Output
  • Consider ADMP441 for Omnidirectional Microphone with Bottom Port and I2S Digital Output
  • Consider ADMP504 for UltraLow Noise Microphone with Bottom Port and Analog Output

Design Tools,Models,Drivers & Software

Title Content Type File Type
Microphone Beamforming Simulation Tool (32-bit)  (zip)
Software tool for simulating the response of microphone beamforming arrays.
Design Tool ZIP
Microphone Beamforming Simulation Tool (64-bit)  (zip)
Software tool for simulating the response of microphone beamforming arrays.
Design Tool ZIP
ADMP521 IBIS model  (ibs)
IBIS model for ADMP521 simulation
IBIS Models IBS

Evaluation Kits & Symbols & Footprints

Evaluation Boards & KitsView the Evaluation Boards and Kits page for documentation and purchasing

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

Product Recommendations & Reference Designs

Engineered. Tested. Ready to Integrate.
Learn More

Companion Products

Suggested Companion Products


Recommended Audio Codecs for the ADMP521

  • For a low power SigmaDSP codec with headphone driver and PLL, we recommend the ADAU1761.
  • For a low power SigmaDSP codec with mono speaker driver and PLL, we recommend the ADAU1781.
  • For a low power, 24-bit audio codec with headphone driver and PLL, we recommend the ADAU1361.
  • For a low power, 24-bit audio codec with a fixed-function tunable signal processor, we recommend the ADAU1381.
  • For a low power, multi-channel, 24-bit audio codec in a wafer level chip scale package, we recommend the ADAU1373.
Recommended Power Solutions
  • For selecting voltage regulator products, use ADIsimPower.

Were these recommendations helpful?

SampleSample & Buy

Price, packaging, availability

ADMP521 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
ADMP521ACEZ-RL Status: Production 5 ld LGA_CAV 5 Ind Reel, 5000 - $2.25 Y  Material Info PCN Purchase
ADMP521ACEZ-RL7 Status: Production 5 ld LGA_CAV 5 Ind Reel, 1000 - $2.25 Y  Material Info PCN Purchase Sample
Price Table Help

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.

ADMP521 FLEX Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
EVAL-ADMP521Z-FLEX Status: Production Evaluation Board $90.00 Yes -
ADMP521Z Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
EVAL-ADMP521Z Status: Production Evaluation Board $70.00 Yes -
Review this Product X
content here.
content here.

Review this Product

Close