TDK-EPC, a group company of TDK Corp., has launched the smallest commercially available MEMS microphone worldwide with an integrated digital interface. Measuring 3.25x2.25x1.1mm, the EPCOS T4030 is 60 percent smaller than alternative products, allowing significantly more compact designs of mobile phones and consumer electronics applications such as MP3 players and digital cameras.
The T4030 has a sensitivity of -26dB FS (full scale), and a signal-to-noise ratio of 60dBA. Even at a sound level of 100dB, 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 -82dB 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 1.64V and 2.86V. The power consumption is 650µA and is reduced to less than 10µA in standby operation.
EPCOS T4030 MEMS microphone
EPCOS
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