Product description
MEMS microphone LMA3722T421-OA5 – analog, omnidirectional. LMA3722T421-OA5 is a compact analog MEMS microphone from LinkMems with an integrated preamplifier circuit. It is suitable for applications that require good sensitivity, a stable signal-to-noise ratio, and low power consumption.
The microphone features an omnidirectional pickup pattern and is well suited for voice capture and general sound detection in consumer electronics, IoT devices, and embedded systems.
Specifications:
- Omnidirectional MEMS microphone with analog output
- Sensitivity: typically –42 dB at 94 dB SPL, 1 kHz
- Signal-to-noise ratio: 55 dB(A), A-weighted
- Total harmonic distortion: typically 0.1%, maximum 0.5% at 94 dB SPL
- Acoustic overload point: 130 dB SPL (10% THD)
- Effective power supply filtering with PSR of –100 dB
- Supply voltage: 1.6–3.6 V
- Current consumption: typically 120 µA
- Output impedance: approx. 300 Ω
- Dimensions (L x W x H): 3.76 x 2.24 x 1.10 mm
- Weight: 0.03 g
Applications:
- Voice control and speech recognition
- Smart home and IoT products
- Portable electronics
- Industrial and embedded systems with limited power budgets