SPH6855LM4H-1-8

Overview

The SPH6855LM4H-1-8 is a digital MEMS microphone manufactured by Syntiant. It features a bottom port configuration and operates within a frequency range of 1.024 MHz to 4.096 MHz. The device functions at a supply voltage of 1.8 V with a typical operating current of 600 uA. It delivers a signal-to-noise ratio (SNR) of 65 dB(A). The unit supports I2S digital output and is rated for operation between -40°C and +100°C. Its physical dimensions are 3.5 mm in length.

Feature Summary

• Digital I2S interface integration
• Bottom port acoustic design
• High signal-to-noise ratio performance

Applications

• Voice recognition systems
• Smart home audio devices
• Mobile communication terminals

Procurement Notes

Verify component authenticity through authorized distributors or official manufacturer channels. Confirm the specific suffix designation matches project requirements. Check RoHS compliance documentation prior to integration. Ensure storage conditions adhere to moisture sensitivity levels defined in the datasheet. Validate pinout compatibility with the target PCB layout before finalizing procurement orders.

Selection Notes

Select this component when an I2S digital output is required instead of PDM. Consider the bottom port orientation for mechanical assembly constraints. Evaluate the 600 uA current consumption against battery life targets. Verify that the 1.8 V supply voltage aligns with the system power architecture. Assess the 65 dB SNR against ambient noise environment requirements.

Part Context

This part belongs to the Syntiant Sisonic family of MEMS microphones. These components integrate acoustic sensing with on-chip analog-to-digital conversion. The series emphasizes low power consumption and high fidelity audio capture for embedded applications.

Replacement Considerations

SPH0645LM4H-1-8 shares similar specifications including I2S output and bottom port design.