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ECM chip

Product Description

ECM the assembly is easy. Stable production advantages compared to the microphone during a long time and replacing them a product.
Type of ECM is classified as a normal Type and SMD Type. Developed by ECM Chip Type PCB Type is easy to manufacture,and to produce an ECM at a reasonable price. It is the ECM Module.
ECM Module is not affected by the moisture and RFNoise which was a problem in the ECM Chip.So compared to the MEMS microphone for high prices, low price affordable mobile phone application market,the market expansion of ECM Module is expected.

Product Features

Composed of diaphragm, electrostatic film, ECM Transistor/IC The ECM Transistor/IC converts the capacitance change of the capacitor between the diaphragm and the electrostatic film according to the audio signal into an electrical signal.

  • Combination of ECM Chip and RF Filter
  • Low RF Noise
  • Stable operation regardless of humidity changes
  • High voltage gain

Applications

  • Smartphone
  • Laptop
  • Headset / Earphone
  • Digital Camera
  • AI speaker

List

Part No Package [Ta = 25 ℃, VDD = 2.0V,RL = 2.2kΩ, CIN = 5pF] Dimension
W x L x H (mm)
Type
Gain [dB](Typ.) Output Noise [dB](Typ.)
RJN1123 P-1208 -1.5 -103 1.2 x 0.8 x 0.33 ECM FET
RJN112304 P-120804 -1.5 -103 1.2 x 0.8 x 0.38 ECM FET
RJN1123K P-1208 -1.5 -109 1.2 x 0.8 x 0.33 ECM FET
RJN2123 P-1208 0.5 -102 1.2 x 0.8 x 0.33 ECM FET
RJN212304 P-120804 0.5 -102 1.2 x 0.8 x 0.38 ECM FET
RJN2123F04K P-120804 0.5 -106 1.2 x 0.8 x 0.38 ECM FET
RJN2123G P-1208 0.5 -102 1.2 x 0.8 x 0.33 ECM FET
RJN2123K P-1208 0.5 -106 1.2 x 0.8 x 0.33 ECM FET
RJN2308 P-1208 7 -100 1.2 x 0.8 x 0.33 ECM IC
RJN2316 P-1208 10 -97 1.2 x 0.8 x 0.33 ECM IC
RJN2324 P-1208 15 -90 1.2 x 0.8 x 0.33 ECM IC
RJN5123 P-1208 3.4 -100 1.2 x 0.8 x 0.33 ECM FET
RJN5123F04K P-120804 3.4 -102 1.2 x 0.8 x 0.38 ECM FET
RJN5123K P-1208 3.4 -102 1.2 x 0.8 x 0.33 ECM FET
RS903 P-1009 0.5 -102 1.0 x 0.9 x 0.33 ECM FET
RS908 P-1009 7 -100 1.0 x 0.9 x 0.33 ECM IC
RS916 P-1009 10 -97 1.0 x 0.9 x 0.33 ECM IC

Product Description

MEMS Microphone is a product developed for the purpose of replacing the existing ECM.
And maintain the high prices compared to the ECM. However, it is a great advantage to maintain a stable characteristic. So spurring the MEMS development in RFsemi.

Features

  • Enhanced acoustic performance and stable structure using array diaphragm
  • High sensitivity using tiny & thin-film diaphragm
  • High SNR figure using high sensitivity and low noise features
  • Narrow range of sensitivity fluctuation
  • Suitable for mass-production by automatic assembly of SMD Module

Product Features

Applications

  • Smartphone
  • Laptop
  • Headset / Earphone
  • Digital Camera
  • AI speaker

List

Part No [Ta = 25 ℃, VDD = 2.0V,RL = 2.2kΩ, CIN = 5pF] Dimension
W x L x H (mm)
Max. Current
[uA]
Type
Gain [dB](Typ.) Output Noise [dB](Typ.)
RF2718-C01 -42/-38 -98 ~ -100 1.85 x 2.75 x 0.95 150 MEMS Microphone.
RF3722-C01 -42/-38 -98 ~ -100 2.24 x 3.76 x 1.10 150 MEMS Microphone.
RF3729-C01 -42/-38 -98 ~ -100 2.95 x 3.76 x 1.10 150 MEMS Microphone.

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