20 Hz ~ 20 kHz Analog Microphone Electret Condenser 3 V ~ 10 V Omnidirectional (-44dB ±2dB) PC Pins JLI 140A HD microphone microphone capsule
The CMA-4544PF-W is an electret condenser microphone designed for compact audio capture applications. It features high sensitivity, low noise characteristics, and stable frequency response, making it suitable for voice recording, communication devices, and embedded audio systems. The device integrates a permanently charged electret diaphragm with a built-in FET preamplifier, enabling reliable signal output with minimal external circuitry.
Key Features
Electret condenser microphone element
High sensitivity and signal-to-noise ratio
Omnidirectional pickup pattern
Compact, low-profile package
Built-in FET impedance converter
Stable performance over temperature range
RoHS compliant
Electrical Characteristics
Operating Voltage: typically 2.0 V (range: 1.5 V to 10 V)
Current Consumption: typically 0.5 mA
Sensitivity: typically -44 dB ±3 dB (at 1 kHz, 0 dB = 1 V/Pa)
Signal-to-Noise Ratio: typically 60 dB
Output Impedance: typically 2.2 kΩ
Frequency Response: 20 Hz to 16 kHz
Acoustic Characteristics
Directivity: Omnidirectional
Maximum Sound Pressure Level: typically 110 dB SPL
Equivalent Noise Level: typically 34 dB SPL
Mechanical Characteristics
Package Type: Through-hole cylindrical metal can
Dimensions: approximately 4.5 mm diameter × 4.4 mm height
Mounting Type: PCB through-hole
Terminal Configuration: Two-pin (signal and ground)
Environmental Specifications
Operating Temperature Range: -20°C to +70°C
Storage Temperature Range: -40°C to +85°C
Applications
Voice recording devices
Mobile and handheld electronics
Intercom and communication systems
Embedded audio input modules
IoT and consumer electronics
Pin Configuration
Pin 1: Output (Vout)
Pin 2: Ground (GND / Case)
Compliance
RoHS compliant
Suitable for general consumer electronics use