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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