Analog Devices announced the ADMP504 lowest-noise MEMS microphone. The ADI ADMP504 features the same SNR performance as an array of two individual 62-dB SNR microphones. It offers an extended frequency response of up to 20 kHz and a high PSR (power-supply-rejection) of 70 dBV. The ADMP504 surface mount MEMS microphone is available now for $1.85 each in 1000 units. It is the industry’s lowest-noise MEMS microphone, and is ideal for industrial, professional audio and video conferencing applications.
The ADI ADMP504 is a surface mount MEMS microphone that is reflow solder compatible with no sensitivity degradation. The sensitivity specification of -38 dBV is well suited for many codecs and discrete signal chain components. The high SNR of 65 dBA, or 29 dBA EIN, enables far-field audio-capture applications, as well as those using multi-microphone beam-forming algorithms. Low current consumption of < 180 µA (typ) with a power supply voltage of 1.6 V to 3.3 V extends battery life for portable applications.
ADA ADMP504 MEMS Microphone
- SNR (signal-to-noise ratio) of 65-dBA, or 29-dBA EIN (equivalent input noise)
- Extended frequency response from 100 Hz to 20 kHz
- High PSR (power-supply-rejection) of 70 dBV
- Sensitivity specification of -38 dBV
- Function- and pin-compatible with the ADMP404
- Omnidirectional response
- Low current consumption: < 180 uA
- Single-ended analog output
- 120 dB maximum SPL
- Compatible with Sn/Pb and Pb-free solder processes
- RoHS/WEEE compliant
- Available in a thin 3.35 mm x 2.50 mm x 0.88 mm surface-mount package
More info: Analog Devices ADMP504 MEMS Microphone (pdf)