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Home › Solutions › SmartSound › Analog Microphones › T4078 |
T4078Analog, Omnidirectional MEMS Microphone with Internal Pre-AmplifierThe T4078 is an analog MEMS microphone with very high dynamic range and a low-power AlwaysOn mode. The T4078 includes a MEMS microphone element, an impedance converter, and an output amplifier. This microphone features a low-power mode, which is active when the supply voltage is <1.9V. In this mode, the T4078 operates with max. 85 μA Other specifications in high performance mode include 135 dB SPL acoustic overload point, tight ±1 dB sensitivity tolerance and 66 dB(A) SNR. The T4078 is available in a very small 3.35 × 2.5 × 0.98 mm bottom port surface-mount package. MPN: MMICT4078-00-908 |
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| Product | Package Size | Output | Port Location | SNR (dBA) | AOP (dB SPL) | Sensitivity (dbfs) | LF Cutoff (Hz) | Status | Purchase |
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 T4078 | 3.35 × 2.5 × 0.98 | Analog | Bottom | 66 | 135 | n/a | NR/ND |
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| Datasheet / Product Brief | Version | Updated | Download |
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| T4078 Datasheet | 6 | 2019-09-04 |  |
| App Notes & User Guides | Version | Updated | Download |
|---|---|---|---|
| AN-100 – MEMS Microphone Handling and Assembly Guide | 1.5 | 2017-07-12 |  |
| AN-1112 – Microphone Specifications Explained | 1.1 | 2016-06-15 | |
| AN-1124 – Recommendations for Sealing InvenSense Bottom-Port MEMS Microphones from Dust and Liquid Ingress | 1.0 | 2014-03-21 | |
| AN-1140 – Microphone Array Beamforming | 1.0 | 2013-12-31 | |
| AN-1003 – Recommendations for Mounting and Connecting InvenSense MEMS Microphones | 1.0 | 2013-12-31 | |
| AN-1165 – Op Amps for MEMS Microphone Preamp Circuits | 1.0 | 2013-12-31 | |
| Low Self Noise: The First Step to High-Performance MEMS Microphone Applications | 1.0 | 2013-12-31 | |
| Analog and Digital MEMS Microphone Design Considerations | 1.0 | 2013-12-31 | |
| Understanding Microphone Sensitivity | 1.0 | 2013-12-18 | |
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