PUI Audio Microphone ECM, 20 kHz

This microphone is a Compact electret condenser transducer designed for general-purpose acoustic pickup in electronic and automation systems. It operates as an omnidirectional capsule suited to capturing ambient sound in control panels, sensing modules and small devices where a miniature voice or audio input is required. The component connects via a pin-type Interface and is specified for low-voltage operation.

• Omnidirectional polar pattern for uniform sound pickup across angles
• Sensitivity -37 dB enabling clear detection of low-level signals
• Impedance 2200 Ω to match common preamplifier inputs
• Frequency response 0.02 to 20 kHz for broad acoustic coverage
• Operating voltage range 2 to 10V for flexible power arrangements
• RoHS and REACH conformity to meet material restriction standards

• Suitable for voice sensing in automation control units
• Ideal for audio input on handheld diagnostic tools
• Used with embedded boards in industrial monitoring devices
• Can be used for acoustic logging in mechanical test rigs

A pin-type electrical connection is required to make the electrical and mechanical link to host circuitry.

The 2200 Ω source impedance means preamplifiers with input impedance significantly higher than this Value will preserve frequency response and sensitivity.

It accepts a DC supply anywhere between 2V and 10 V, allowing use with common low-voltage regulators and battery sources.

The transducer responds from 0.02 kHz up to 20 kHz, covering infrasonic-to-audible ranges useful for both low-frequency vibration pickup and standard audio tasks.