TM-23547-C36

Overview

The Knowles TM-23547-C36 is an omnidirectional electret condenser microphone designed for analog audio applications. It operates within a voltage range of 0.9 V to 1.6 V and draws a supply current of 50 µA. The device features a sensitivity of -38.5 dB with a tolerance of ±3 dB at 74 dB SPL. Its frequency response spans from 100 Hz to 5 kHz, and it presents an impedance of 4.4 kOhms. The component utilizes a surface-mount pad termination type and is housed in a square package measuring 3.57 mm by 3.57 mm with a maximum height of 1.77 mm.

Feature Summary

• Omnidirectional acoustic pickup pattern for uniform sound capture
• Analog output signal generation via electret condenser technology
• Low power consumption suitable for battery-operated portable devices

Applications

• Voice recognition systems
• Mobile communication handsets
• Portable electronic recording devices

Procurement Notes

Verify the RoHS compliance status carefully, as sources indicate non-compliance. Confirm the specific sensitivity rating matches project requirements, noting potential variations between -38.5 dB and other listed values. Ensure the operating voltage range aligns with the target circuit design before procurement.

Selection Notes

Select this component when a compact, low-power omnidirectional microphone is required for analog voice processing. Consider the 4.4 kOhm impedance for interface matching. Evaluate the physical dimensions against available PCB space constraints. Verify environmental compliance needs against the non-RoHS designation found in some documentation.

Part Context

This model belongs to the Knowles TM series of microphones, which are widely used in consumer electronics. The series offers various sensitivity and packaging options. The TM-23547-C36 specifically targets applications requiring small form factors and reliable analog audio input capabilities.

Replacement Considerations

The TM-23546-C36 is a documented alternative within the same series. Verify if its -54.5 dB sensitivity meets system gain requirements. Check for any differences in mechanical dimensions or electrical characteristics before substitution.