MD9765ASZ-0

Microphones Overview

The Knowles MD9765ASZ-0 is an omnidirectional electret condenser microphone designed for analog audio applications. It operates within a supply voltage range of 3 V to 10 V and features a frequency response spanning from 100 Hz to 10 kHz. The device exhibits a sensitivity of -42 dB ±4 dB relative to 1 V/Pa at 94 dB SPL, measured under standard test conditions with a supply voltage of 3.0 V and a load resistance of 2 kΩ. The component utilizes solder pads for surface-mount integration and maintains a physical diameter of 9.7 mm (0.382 inches).

Microphones Feature Summary

• Omnidirectional acoustic design for uniform sound capture from all directions.
• Analog output signal generation suitable for direct interfacing with preamplifiers.
• Electret condenser transducer technology ensuring stable performance over time.

Microphones Applications

• Consumer electronic devices requiring compact audio input solutions.
• Voice recognition systems utilizing omnidirectional pickup patterns.
• General-purpose analog audio recording equipment.

Microphones Procurement Notes

Verify the specific ordering suffix against official Knowles documentation to confirm exact electrical tolerances and packaging configurations. Confirm RoHS compliance status directly with the manufacturer or authorized distributors, as regulatory status may vary by production batch. Ensure compatibility with existing PCB footprint dimensions before finalizing procurement decisions.

Microphones Selection Notes

Select this component when an omnidirectional polar pattern is required for broad sound field coverage in analog circuits. Consider the specified sensitivity and operating voltage range to ensure proper impedance matching with downstream amplifier stages. Evaluate the physical size constraints against the available board space for surface-mount assembly.

Microphones Part Context

This part belongs to the Knowles MD series of microphones, which are widely utilized in portable electronics. The MD9765ASZ-0 represents a specific variant within this family, distinguished by its analog output characteristics and omnidirectional response profile. It serves as a foundational component for voice capture in various consumer hardware platforms.

Microphones Replacement Considerations

Consult official Knowles substitution guides for verified equivalent parts. Cross-reference pinouts and electrical specifications carefully when considering alternative manufacturers to ensure functional compatibility without circuit redesign.

Microphones FAQ

What is the operating voltage range for the MD9765ASZ-0?

The component operates effectively within a supply voltage range of 3 V to 10 V.

Does this microphone have a directional pickup pattern?

No, the MD9765ASZ-0 features an omnidirectional polar pattern, capturing sound equally from all directions.