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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：68dB
- Impedance：400 Ohms
- Voltage Range：2.4 V ~ 3.3 V
- Current - Supply：105 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" (1.10mm)
- Shape：Rectangular
- Grade：-
- Qualification：-
- Voltage - Rated：2.7 V
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Overview
The AMM-3538-3-B is an analog MEMS microphone manufactured by PUI Audio. It features a sensitivity of -38 dB and a signal-to-noise ratio of 68 dB. The device operates at a supply voltage of 2.7 VDC with a current consumption of 150 uA. Its frequency range spans from 20 Hz to 20 kHz, and it has an impedance of 400 ohms. The component supports an operating temperature range from -40°C to +85°C. Physical dimensions are 3.76 mm in length, 2.95 mm in width, and 1 mm in depth.
Feature Summary
- Omnidirectional acoustic response for consistent sound capture
- Low power consumption suitable for battery-operated devices
- High signal-to-noise ratio for clear audio quality
- Analog output interface for direct integration
Applications
- Voice recognition systems
- Consumer electronics audio input
- Smart home devices
- Wearable technology microphones
Procurement Notes
Verify the specific manufacturing date code and lot number upon receipt to ensure compliance with project timelines. Confirm that the received components match the exact part number AMM-3538-3-B, as suffixes may indicate different packaging or minor variations not affecting electrical performance but requiring documentation alignment. Check for physical damage to the package before soldering.
Selection Notes
Select this component when a low-power analog MEMS microphone with high sensitivity is required. The 2.7V operating voltage suits specific biasing requirements. Consider the 400-ohm impedance for amplifier matching. Ensure the PCB layout accommodates the 3.76 x 2.95 mm footprint and the 1 mm height constraint for compact designs.
Part Context
This part belongs to the AMM series of analog MEMS microphones from PUI Audio. It is designed for general-purpose audio sensing applications. The series offers various sensitivity and voltage options. This specific model provides a balance between power efficiency and acoustic performance for standard voice-band applications.
Replacement Considerations
No public confirmed substitute part numbers are available in the provided documentation. Verify compatibility with existing circuitry if considering alternative suppliers.
