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Product Detailed Parameters
- Description：ANALOG MICROPHONE -38DB 2VDC
- 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：69dB
- Impedance：400 Ohms
- Voltage Range：2.4 V ~ 3.3 V
- Current - Supply：110 µA
- Port Location：Top
- Ratings：-
- Termination：Solder Pads
- Size / Dimension：0.157" L x 0.118" W (4.00mm x 3.00mm)
- Height (Max)：0.051" (1.30mm)
- Shape：Rectangular
- Grade：-
- Qualification：-
- Voltage - Rated：2.75 V
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Overview
The AMM-4038-B is an omnidirectional analog MEMS microphone manufactured by PUI Audio. It features a sensitivity of -40 dB and a signal-to-noise ratio of 68 dB. The device operates on a supply voltage of 2.7 VDC with a current consumption of 150 uA. It has an impedance of 400 ohms and supports a frequency range from 20 Hz to 20 kHz. The component measures 3.76 mm in length, 2.95 mm in width, and 1 mm in depth, suitable for surface mount applications.
Feature Summary
- Utilizes silicon MEMS technology with integrated ASIC for high sensitivity and low noise performance.
- Provides analog output with omnidirectional acoustic characteristics for versatile audio capture.
- Designed for ultra-low current consumption to support battery-powered portable electronics.
Applications
- Smart IoT devices
- Consumer electronics
- Headsets
Procurement Notes
Verify the specific operating voltage requirements against the system design, as this model specifies 2.7 VDC. Confirm that the analog output interface matches the input specifications of the connected processing unit. Ensure the PCB footprint aligns with the 3.76 mm x 2.95 mm dimensions. Check for RoHS compliance documentation if required by regional regulations.
Selection Notes
Select this component when a compact analog MEMS microphone with low power consumption is required. It is suitable for applications needing a wide frequency response up to 20 kHz. Consider the 400 ohm impedance for circuit matching. Compare with other models in the series if different sensitivity or voltage levels are needed.
Part Context
This part belongs to the PUI Audio MEMS microphone family, which utilizes dedicated pre-amplifier ASICs to deliver high dynamic range performance. These microphones are designed for surface mount assembly and offer advantages such as low distortion and high sound pressure tolerance compared to traditional solutions.
Replacement Considerations
Publicly confirmed substitute part numbers for AMM-4038-B were not found in the provided source material. Verify compatibility with alternative components based on electrical parameters and physical dimensions before substitution.
