DMM-4026-B-R

Overview

The PUI Audio DMM-4026-B-R is a digital MEMS microphone featuring an omnidirectional acoustic port and bottom sound opening. It operates on a 1.8 VDC supply with current consumption ranging from 450 uA to 1 mA. The device delivers a sensitivity of -26 dB and a signal-to-noise ratio between 61 dB and 63 dB across a frequency range of 20 Hz to 18 kHz. It outputs digital PDM signals and functions within temperatures from -40 C to +70 C. The component measures 4 mm x 3 mm x 1 mm in a rectangular SMD package.

Feature Summary

• Integrates dedicated preamplifier ASIC for high dynamic range performance
• Provides low distortion and high acoustic overload point capabilities
• Features ultra-low current consumption for power-efficient operation
• Supports surface mount assembly compatible with high-temperature reflow processes

Applications

• Security monitoring equipment including glass break detection
• Industrial machine monitoring for predictive maintenance
• Driver cabin operator safety systems
• Microphone array configurations
• Smart IoT consumer devices

Procurement Notes

Verify the specific SNR variant (61 dB or 63 dB) required for your design, as datasheets may list both values. Confirm that the digital PDM output interface aligns with your host processor's input requirements. Ensure the 1.8 VDC operating voltage matches your system's power rail specifications before finalizing procurement.

Selection Notes

Select this component when a compact digital microphone with low power usage is needed. The 4 mm x 3 mm footprint suits space-constrained designs. The digital PDM output eliminates the need for external analog-to-digital conversion. Verify thermal limits against your application environment, as the maximum operating temperature is +70 C.

Part Context

This part belongs to the PUI Audio DMM series of digital MEMS microphones. The series utilizes silicon technology and offers various sensitivity and noise performance options. These components are designed to replace traditional analog microphones by providing integrated signal conditioning directly on the sensor die.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.