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Product Detailed Parameters
- Description：DIGITAL MICROPHONE -26DB 1.6VDC
- Series：DMM
- Mfr：PUI Audio, Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：MEMS (Silicon)
- Output Type：Digital, PDM
- Direction：Omnidirectional
- Frequency Range：100 Hz ~ 10 kHz
- Sensitivity：-26dB ±1dB @ 94dB SPL
- S/N Ratio：64dB
- Impedance：-
- Voltage Range：1.62 V ~ 3.6 V
- Current - Supply：550 µA
- Port Location：Top
- Ratings：-
- Termination：Solder Pads
- Size / Dimension：0.138" L x 0.104" W (3.50mm x 2.65mm)
- Height (Max)：0.043" (1.08mm)
- Shape：Rectangular
- Grade：-
- Qualification：-
- Voltage - Rated：1.8 V
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Overview
The PUI Audio DMM-3526-3-B is a digital MEMS microphone featuring an omnidirectional acoustic port and PDM output. It operates at a supply voltage of 1.8 VDC with a current consumption of 550 uA. The device provides a sensitivity of -26 dBFS and a signal-to-noise ratio of 64 dB. Its frequency range spans from 100 Hz to 10 kHz. The component measures 3.5 mm in length, 2.65 mm in width, and 1 mm in depth, housed in an SMD-5 package suitable for surface mount assembly.
Feature Summary
- Digital PDM output interface for direct connection to audio processors
- Omnidirectional sound pickup pattern for uniform audio capture
- Low power consumption design optimized for portable devices
Applications
- Smartphones and mobile communication devices
- Voice recognition systems
- Portable electronic recorders
Procurement Notes
Verify the specific datasheet revision and RoHS compliance status before integration. Confirm that the 1.8V operating voltage aligns with your system's power rails. Ensure the SMD-5 footprint matches your PCB layout requirements. Check for any specific handling precautions related to the MEMS structure during assembly.
Selection Notes
Select this model when a compact form factor and low power usage are critical. The 64 dB SNR offers high fidelity for voice applications. Consider the 100 Hz to 10 kHz bandwidth limitation if extended frequency response is required. The digital PDM output simplifies circuit design by eliminating analog noise susceptibility.
Part Context
This component belongs to the PUI Audio DMM series of digital MEMS microphones. The series focuses on providing high-quality audio solutions in small packages. These microphones utilize silicon-based technology for consistent performance across various environmental conditions.
Replacement Considerations
The DMM-4026-B-R is a similar omnidirectional digital MEMS microphone from the same manufacturer. It shares the 1.8V supply and PDM output but features different dimensions (4x3mm) and a wider frequency range. Verify pinout compatibility and acoustic performance differences before substitution.
