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Product Detailed Parameters
- Description：ANALOG MICROPHONE -38DB 1.6VDC
- Series：AMM
- 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：-38dB ±1dB @ 94dB SPL
- S/N Ratio：63dB
- Impedance：300 Ohms
- Voltage Range：1.6 V ~ 3.6 V
- Current - Supply：110 µA
- Port Location：Top
- Ratings：-
- Termination：Solder Pads
- Size / Dimension：0.148" L x 0.116" W (3.76mm x 2.95mm)
- Height (Max)：0.047" (1.20mm)
- Shape：Rectangular
- Grade：-
- Qualification：-
- Voltage - Rated：2 V
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Overview
The AMM-3738-2-B is an analog MEMS microphone manufactured by PUI Audio. It features a sensitivity of -38 dB and a signal-to-noise ratio (SNR) of 66 dB. The device operates at a supply voltage of 2 V with a current consumption of 200 uA. Its frequency range spans from 20 Hz to 20 kHz, and it has an impedance of 300 ohms. The physical dimensions are 3.5 mm in length, 2.65 mm in width, and 1 mm in depth. It supports an operating temperature range from -40°C to +85°C.
Feature Summary
- Utilizes dedicated pre-amplifier ASIC for high sensitivity and SNR output
- Offers low distortion and high acoustic overload point for dynamic range
- Features ultra-low current consumption suitable for battery-powered devices
- Designed for surface mount assembly and high-temperature reflow soldering
Applications
- Security monitoring equipment including glass break detection
- Industrial machine monitoring for predictive maintenance
- Smart IoT consumer devices
- Headsets and audio accessories
Procurement Notes
Verify the specific suffix '2-B' against official datasheets to confirm the exact package type and tape/reel specifications. Ensure compatibility with the target PCB footprint and reflow profile requirements. Confirm RoHS compliance status through the manufacturer's latest documentation before finalizing procurement orders.
Selection Notes
Select this component when a compact analog MEMS microphone with high SNR is required. The 2V operation and low current draw make it suitable for portable electronics. Compare the 300-ohm impedance and 20Hz-20kHz frequency response against system input requirements. Consider the SMD-5 package size for space-constrained designs.
Part Context
This part belongs to the AMM series of analog MEMS microphones from PUI Audio. These components integrate a capacitive audio sensor with a specialized ASIC. The series is designed to provide competitive performance in terms of size, power consumption, and audio fidelity compared to traditional microphone technologies.
Replacement Considerations
Check for direct substitutes within the AMM series such as AMM-3538-2-B or AMM-3738-T. Verify pinout compatibility and electrical parameter alignment before substitution. Consult official replacement guides for any functional differences between variants.
