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Product Detailed Parameters
- Description：MIC MEMS ANALOG OMNI -42DB
- Series：-
- Mfr：PUI Audio, Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：MEMS (Silicon)
- Output Type：Analog
- Direction：Omnidirectional
- Frequency Range：20 Hz ~ 20 kHz
- Sensitivity：-42dB ±1dB
- S/N Ratio：59dB
- Impedance：300 Ohms
- Voltage Range：1.6 V ~ 3.6 V
- Current - Supply：200 µA
- Port Location：Top
- Ratings：IP57 - Dust Protected, Waterproof
- Termination：Solder Pads
- Size / Dimension：0.108" L x 0.073" W (2.75mm x 1.85mm)
- Height (Max)：0.039" (1.00mm)
- Shape：Rectangular
- Grade：-
- Qualification：-
- Voltage - Rated：2 V
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Overview
The AMM-2742-T-WP-R is an omnidirectional MEMS microphone manufactured by PUI Audio. It operates at a supply voltage of 2 VDC with a sensitivity of -42 dB and an impedance of 300 ohms. The component measures 2.75 mm in length, 1.85 mm in width, and 1 mm in depth. It features an IP57 rating for environmental protection and is available in reel or cut tape packaging.
Feature Summary
- Omnidirectional acoustic design for uniform sound capture
- IP57 rated enclosure for dust and water resistance
- Low voltage operation compatible with portable electronics
Applications
- Consumer audio devices requiring compact microphones
- Portable electronic equipment with limited power budgets
- Environmental sensing applications needing durable sensors
Procurement Notes
Verify the specific suffix WP-R against official datasheets to confirm package type and marking variations. Ensure compatibility with 2 VDC supply rails and 300 ohm input impedance requirements. Confirm IP57 sealing integrity if deployed in harsh environments. Cross-reference Mouser part number 665-amm-2742-t-wp-r for accurate sourcing details.
Selection Notes
Select this model when space constraints require dimensions under 3 mm while maintaining omnidirectional pickup patterns. The low operating current and voltage make it suitable for battery-powered systems. Verify that the analog output interface meets downstream amplifier input requirements without additional biasing complexity.
Part Context
This component belongs to the AMM series of MEMS microphones from PUI Audio. It shares similar electrical characteristics with models like AMM-3742-2-T but differs in physical footprint and specific packaging options. The series targets applications demanding reliable audio input in compact form factors.
Replacement Considerations
AMM-3742-2-T offers comparable electrical performance with different physical dimensions. AMM-3538-3-B provides higher sensitivity but requires a 2.7 V supply. Verify pinout and mechanical mounting compatibility before substitution.
