18-06-2013, 04:35 PM
World’s smallest MEMS microphones with a digital interface
[attachment=55665]
INTRODUCTION
TDK-EPC, a group company of TDK Corporation, presents the
smallest commercially available MEMS microphone
worldwide with an integrated digital interface. The dimensions
of the EPCOS T4030 of only 3.25 × 2.25 × 1.1 mm³ make the
microphone about 60 percent smaller than alternative
products. This allows significantly more compact designs of mobile phones and consumer
electronics applications such as MP3 players and digital cameras.
The T4030 has a sensitivity of -26 dB FS (full scale), and a signal-to-noise ratio of 60 dBA. Even at
a sound level of 100 dB, the distortion factor is under 1 percent. Its frequency response is
characterized by high bandwidth and low amplitude fluctuations. The T4030 is largely insensitive
to electromagnetic interference thanks to a digital PDM (pulse density modulation) output. The
suppression of the power supply noise is -82 dB FS. Two channels can also be transmitted via
one signal line, making stereo applications much simpler to implement than in analog
technology. The supply voltage range is between 1.64 and 2.86 V. The power consumption is 650
μA and is reduced to less than 10 μA in standby operation.
Thanks to its compact dimensions and outstanding electrical properties, the microphone is also
predestined for applications with high requirements on audio quality. This also includes highquality
video and VoIP (Voice over IP) systems, telephone conference installations, beam-forming
and noise-suppression systems.
Glossary
MEMS: Micro-Electro-Mechanical System. This designates components and systems in which
electronic and mechanical components are integrated in a miniature size. Apart from
microphones, especially sensors and actuators are manufactured in this technology.
Beam forming: A method for detecting sources in wave fields such as sound fields.
Corresponding systems are also known as acoustic cameras or microphone arrays.
RoHS: Restriction of Hazardous Substances. This directive has regulated the use of specific
substances in electrical and electronic appliances since 2003.
[attachment=55665]
INTRODUCTION
TDK-EPC, a group company of TDK Corporation, presents the
smallest commercially available MEMS microphone
worldwide with an integrated digital interface. The dimensions
of the EPCOS T4030 of only 3.25 × 2.25 × 1.1 mm³ make the
microphone about 60 percent smaller than alternative
products. This allows significantly more compact designs of mobile phones and consumer
electronics applications such as MP3 players and digital cameras.
The T4030 has a sensitivity of -26 dB FS (full scale), and a signal-to-noise ratio of 60 dBA. Even at
a sound level of 100 dB, the distortion factor is under 1 percent. Its frequency response is
characterized by high bandwidth and low amplitude fluctuations. The T4030 is largely insensitive
to electromagnetic interference thanks to a digital PDM (pulse density modulation) output. The
suppression of the power supply noise is -82 dB FS. Two channels can also be transmitted via
one signal line, making stereo applications much simpler to implement than in analog
technology. The supply voltage range is between 1.64 and 2.86 V. The power consumption is 650
μA and is reduced to less than 10 μA in standby operation.
Thanks to its compact dimensions and outstanding electrical properties, the microphone is also
predestined for applications with high requirements on audio quality. This also includes highquality
video and VoIP (Voice over IP) systems, telephone conference installations, beam-forming
and noise-suppression systems.
Glossary
MEMS: Micro-Electro-Mechanical System. This designates components and systems in which
electronic and mechanical components are integrated in a miniature size. Apart from
microphones, especially sensors and actuators are manufactured in this technology.
Beam forming: A method for detecting sources in wave fields such as sound fields.
Corresponding systems are also known as acoustic cameras or microphone arrays.
RoHS: Restriction of Hazardous Substances. This directive has regulated the use of specific
substances in electrical and electronic appliances since 2003.