EM-9745P

Microphones Overview

The EM9745P is an omnidirectional electret condenser microphone manufactured by Soberton. It features low impedance and operates with a maximum current consumption of 0.5mA at a standard voltage of 4.5V. The sensitivity reduction is maintained within -3dB at 1.5V, ensuring stable performance across varying supply conditions. The signal-to-noise ratio exceeds 60dB, providing clear audio capture. Sensitivity options include -34 ± 3dB, -36 ± 3dB, -38 ± 3dB, -40 ± 3dB, -42 ± 3dB, and -44 ± 3dB, referenced to 0dB = 1V/Pa at 1kHz.

Microphones Feature Summary

• Omnidirectional acoustic design for uniform sound pickup from all directions
• Low impedance output characteristics suitable for direct interfacing
• High signal-to-noise ratio exceeding 60dB for improved audio clarity
• Wide sensitivity range options available to match specific application requirements

Microphones Applications

• Voice recognition systems requiring consistent directional response
• Consumer electronic devices utilizing electret condenser technology
• Audio recording equipment needing high signal-to-noise performance

Microphones Procurement Notes

Verify the specific sensitivity variant required during ordering, as multiple levels are available. Confirm package compatibility with PCB layout constraints. Ensure power supply circuits support the 4.5V standard operation voltage and 0.5mA maximum current draw. Check that the selected component meets the intended environmental operating conditions for the final assembly.

Microphones Selection Notes

Choose this microphone when omnidirectional coverage is necessary for voice capture. Select based on the required sensitivity level relative to the preamplifier input stage. Consider the low impedance feature for simplified circuit design without additional buffering. Evaluate the high SNR specification against background noise requirements in the target environment.

Microphones Part Context

The EM9745P belongs to Soberton's line of electret condenser microphones. These components are designed for general-purpose audio applications where reliable omnidirectional pickup is essential. The product family emphasizes low power consumption and robust electrical characteristics for integration into portable and stationary electronic devices.

Microphones Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.