SP0103BE3-5

Overview

The SP0103BE3-5 is a zero-height amplified surface-mount silicon microphone manufactured by Knowles Electronics, often distributed in conjunction with Syntiant's sensor ecosystem. It features a top-port design and integrated amplifier for high signal integrity. Key electrical parameters include a sensitivity of -26 dBFS (typical) at 1 kHz, a signal-to-noise ratio of 64 dBA, and an acoustic overload point of 124 dB SPL. The device operates on a supply voltage ranging from 1.5 V to 3.6 V, drawing a typical current of 18 µA. It utilizes a digital PDM output interface and is housed in a compact 1.7 x 1.7 x 0.5 mm package suitable for space-constrained mobile and IoT applications.

Feature Summary

• Zero-height form factor optimized for thin mobile devices
• Integrated low-noise amplifier for enhanced signal quality
• Digital PDM output interface for direct processor connection

Applications

• Smartphones and tablets requiring ultra-thin audio input
• Voice-controlled IoT devices
• Wearable health monitoring equipment

Procurement Notes

Verify the manufacturer designation as Knowles Electronics when sourcing this specific part number, despite Syntiant's distribution role. Confirm the suffix '-5' matches your board layout requirements. Ensure ESD protection protocols are followed during handling, as specified in the datasheet notes regarding vacuum application over the port hole.

Selection Notes

Select this component when minimum profile height is critical for device design. Compare sensitivity and noise floor specifications against alternative MEMS microphones if operating in high-noise environments. Verify compatibility with the host processor's PDM interface timing requirements before finalizing the bill of materials.

Part Context

This microphone belongs to the family of zero-height amplified silicon microphones designed for modern consumer electronics. While Syntiant provides neural processing solutions for edge AI, this specific passive sensor component focuses on high-fidelity acoustic capture. It serves as the front-end input stage for speech recognition systems powered by downstream processors.

Replacement Considerations

Consult official substitution lists for pin-compatible alternatives with similar sensitivity and SNR ratings. Verify that any replacement maintains the same zero-height profile and PDM interface configuration to ensure mechanical and electrical compatibility without redesigning the PCB.