Hearing Aids

The market for hearing aids continues to grow driven by aging populations, increased in hearing loss and regulation of over the counter (OTC) hearing aids. Due to limited product size, battery life and susceptible to outside interference, the MEMS microphone is a key component that determines the quality.

Selection Guide

  • Small package size is suitable for limited product size
  • MEMS is resistant to UV light interference
  • ASIC adds filtering capacitors to avoid RF interference
 

IC Name Description SNR AOP Sensitivity LFRO Dimensions Port Location
3SM126KZT1VA-002-R Analog 64 dB 130 dB -38±1 dBV <20 Hz 2.75 x 1.85 x 1.05mm Top
3SM126KZB1VD-002-R Analog 64 dB 130 dB -38±1 dBV <20 Hz 2.75 x 1.85 x 0.90mm Bottom
3SM121NZB1HA Analog 67 dB 128 dB -38±1 dBV 10 Hz 3.50 x 2.65 x 0.98mm Bottom
3SM222NMB1HA Digital 67 dB 120 dB -26±1 dBFS 10 Hz 3.50 x 2.65 x 0.98mm Bottom