This datasheet describes the Analog Devices ADMP441, a high-performance, low-power omnidirectional MEMS microphone with I2S digital output and bottom port.
The ADMP441 is an omnidirectional MEMS microphone featuring a bottom port for noise rejection. It includes a complete solution with the MEMS sensor, signal conditioning, ADC, anti-aliasing filter, power management, and a standard 24-bit I2S interface, eliminating the need for external audio codecs in many applications.
Key specifications include a high signal-to-noise ratio of 61 dBA, sensitivity of -26 dBFS at 94 dB SPL, and a flat frequency response from 60 Hz to 15 kHz. The device operates on a supply voltage between 1.8 V and 3.3 V with low power consumption in normal mode (1.4 mA). It is housed in a compact 4.72 mm x 3.76 mm x 1 mm surface-mount package compatible with lead-free soldering. This manual is written in Chinese.
| Sensitivity (94 dB SPL) | -26 dBFS |
|---|---|
| Signal-to-Noise Ratio (SNR) | 61 dBA |
| Frequency Response (-3 dB points) | 60 Hz to 15 kHz |
| Supply Voltage (VDD) | 1.8 V to 3.3 V |
| Normal Mode Current (IDD) @ 1.8V | 1.4 mA |
| Package Dimensions | 4.72 mm x 3.76 mm x 1 mm |
| Operating Temperature Range | -40°C to +85°C |
The device has a flat frequency response with -3 dB points at 60 Hz and 15 kHz.
The device operates with a power supply voltage (VDD) between 1.8 V and 3.3 V.
Yes, the package is compatible with tin/lead and lead-free soldering processes.