INMP521
Note: The INMP521 is marked as EOL and is not recommended for new designs.
The INMP521 is a high performance, ultra-low noise, low power, digital output bottom-ported omnidirectional MEMS microphone. The INMP521 consists of a MEMS microphone element and an impedance converter amplifier, followed by a fourth-order Σ-Δ modulator. The digital interface allows for the pulse density modulated (PDM) output of two microphones to be time multiplexed on a single data line using a single clock. The INMP521 is function and pin compatible with the INMP421 microphone, providing an easy upgrade path.
The INMP521 has a very high SNR and common sensitivity of −26 dBFS, making it an excellent choice for far field applications. The INMP521 has an extended wideband frequency response resulting in natural sound with high intelligibility. Low current consumption and a sleep mode with less than 1 µA current consumption enables long battery life for portable applications.
The INMP521 complies with the TIA-920 Telecommunications Telephone Terminal Equipment Transmission Requirements for Wideband Digital Wireline Telephones standard. The INMP521 is available in a thin 3 × 4 × 1 mm surface-mount package. It is reflow solder compatible with no sensitivity degradation. The INMP521 is halide free.
Features
- Small and Thin 3 × 4 × 1 mm Surface-Mount Package
- Omnidirectional Response
- Very High SNR of 65 dBA
- Sensitivity of −26 dBFS
- Extended Frequency Response from 100 Hz to 16 kHz
- Low Current Consumption: 900 µA
- Sleep Mode for Extended Battery Life, <1 µA consumption
- 120 dB Maximum SPL
- High PSR of -80 dBFS
- Fourth-Order Σ-Δ Modulator
- Digital PDM Output
- Compatible with Sn/Pb and Pb-Free Solder Processes
- RoHS/WEEE Compliant
Product key details
| Operation |
- |
| Package Size |
1.00 x 4.00 x 3.00 |
| Output Type |
PDM |
| Port Location |
Bottom |
| Snr |
65.00 |
| Aop |
120.00 |
| Sensitivity (1 KHz, 94 DB SPL) |
- |
| Sensitivity DB FS ±1 DB |
-26.00 |
| Lf Cutoff |
100 |
| Status |
Announced |
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