SPW0690LM4H-1

Overview

The SPW0690LM4H-1 is a miniature, high-performance, low-power digital MEMS microphone manufactured by Syntiant. It features a bottom port design and delivers a single-bit PDM output. Key electrical parameters include a sensitivity of -41 dB, a signal-to-noise ratio (SNR) of 66.5 dB, and an acoustic overload point (AOP) of 135 dB SPL. The device operates within a supply voltage range of 1.08 V to 1.98 V, with typical current consumption of 260 µA in low-power mode and 1000 µA in standard mode. It maintains a power supply rejection ratio (PSRR) of 88 dB at 40 Hz.

Feature Summary

• Integrates a silicon-based MEMS sensor with an on-chip analog-to-digital converter for direct digital PDM data output.
• Features a bottom-port acoustic design optimized for compact electronic enclosures.
• Supports multimode operation allowing selection between low-power and standard performance states.

Applications

• Smart speakers
• Smart TVs
• Mobile devices
• Headsets

Procurement Notes

Verify the specific operating mode requirements against the official datasheet before procurement. Confirm that the supply voltage rails align with the specified 1.08 V to 1.98 V range. Ensure PCB layout accommodates the bottom-port acoustic path. Check for any RoHS compliance documentation if required by your manufacturing standards.

Selection Notes

Select this component when a low-profile digital microphone with high dynamic range is required. The bottom-port configuration is suitable for designs where top-access acoustic ports are obstructed. Consider the low-power mode for battery-operated applications requiring extended standby times. Verify interface compatibility with the host processor's PDM input capabilities.

Part Context

This part belongs to the Syntiant SiSonic™ family of consumer MEMS microphones. These devices are engineered for voice recognition and audio capture in portable electronics. The SPW0690LM4H-1 represents a balance of high acoustic performance and energy efficiency, targeting modern smart home and mobile communication hardware.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Cross-referencing requires matching SNR, AOP, and physical dimensions with other manufacturers' bottom-port PDM microphones.

FAQ

What is the acoustic overload point (AOP) of the SPW0690LM4H-1?

The SPW0690LM4H-1 has an acoustic overload point of 135 dB SPL.

Does the SPW0690LM4H-1 support analog output?

No, it provides a single-bit PDM digital output only.