MEMS ultrasonic microphone
From emboxit
MEMS microphones are widely used in cell-phones. Their frequency response extends to 100 KHz.
Knowles at Digikey
- DIGIKEY: Ultrasonic MEMS Sensor SPM0404UD5 By Knowles Acoustics Contributed By Convergence Promotions LLC 05/06/2011
- DIGIKEY: Knowles MEMS microphones
- SPU0410HR5H-PB at DIGIKEY, price $1.68
- SPU0410HR5H-PB datasheet
- SPM1423HM4H-B digital