EM-9745

Microphones Overview

The EM9745 is an omnidirectional electret condenser microphone manufactured by Soberton. It features a low impedance design with a maximum current consumption of 0.5mA and operates at a standard voltage of 4.5V. The sensitivity reduction is within -3dB at 1.5V, and the signal-to-noise ratio exceeds 60dB. Available sensitivity ranges 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 pickup pattern for uniform sound capture from all directions
• Low impedance output configuration suitable for direct interfacing with various audio circuits
• High signal-to-noise ratio performance exceeding 60dB for clear audio reproduction

Microphones Applications

• Voice recognition systems requiring consistent directional response
• Consumer electronic devices utilizing electret condenser technology
• Audio recording equipment needing low noise floor characteristics

Microphones Procurement Notes

Verify the specific sensitivity variant required, as the EM9745 is available in multiple discrete steps ranging from -34dB to -44dB. Confirm that the application circuit supports the 4.5V standard operation voltage and does not exceed the 0.5mA maximum current consumption limit. Ensure compatibility with the low impedance output specification before finalizing procurement.

Microphones Selection Notes

Select this component when an omnidirectional polar pattern is necessary for the target application. The choice depends primarily on matching the required sensitivity level, which varies across six distinct options. Verify that the system power supply aligns with the 4.5V standard and that the input impedance of the subsequent stage is compatible with the microphone's low impedance output.

Microphones Part Context

The EM9745 belongs to the family of omnidirectional electret condenser microphones produced by Soberton. These components are designed for general-purpose audio sensing applications where consistent frequency response and low distortion are prioritized. The product line emphasizes reliable performance across various consumer electronics environments.

Microphones Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Cross-referencing requires matching the specific sensitivity value, operating voltage, and physical dimensions against alternative omnidirectional electret condenser microphones.

Microphones FAQ

What is the standard operation voltage for the EM9745?

The standard operation voltage is 4.5V.

Does the EM9745 have a directional or omnidirectional pattern?

It has an omnidirectional directivity pattern.

What is the maximum current consumption?

The maximum current consumption is 0.5mA.