AMM-3742-T-R

Overview

The AMM-3742-T-R is an omnidirectional MEMS microphone manufactured by PUI Audio. It features analog output and a top port configuration. Key electrical parameters include a sensitivity of -42 dB, a signal-to-noise ratio (SNR) of 58 dB, and an impedance of 300 ohms. The device operates within a frequency range of 50 Hz to 20 kHz. It requires a working supply voltage of 1.5 VDC with current consumption between 90 µA and 200 µA. The component supports operating temperatures from -40°C to +70°C.

Feature Summary

• Omnidirectional acoustic design for uniform sound capture
• Analog output interface for direct signal processing
• Top-port configuration suitable for surface-mounted applications

Applications

• Consumer electronics audio input
• Industrial control systems
• Medical devices
• Security and fire alarm systems

Procurement Notes

Verify the specific suffix 'T-R' against official datasheets to confirm tape-and-reel packaging specifications. Ensure the 1.5VDC supply requirement aligns with target circuit designs. Confirm RoHS compliance status through manufacturer documentation prior to integration.

Selection Notes

Select this model for low-power analog audio sensing where a 1.5V supply is standard. The 58 dB SNR provides adequate performance for general voice pickup. Consider thermal limits when designing for environments exceeding 70°C.

Part Context

This component belongs to the AMM series of MEMS microphones from PUI Audio. The series offers various sensitivity and package options. This specific part targets cost-sensitive applications requiring reliable analog audio conversion in compact form factors.

Replacement Considerations

Check for pin-compatible alternatives within the same AMM series if supply constraints exist. Verify that substitute parts maintain the 300 ohm impedance and -42 dB sensitivity requirements for circuit compatibility.