Technical Support

Selecting the right MEMS microphone depends on several factors: 1) Output type - choose digital (PDM) for modern digital systems, analog for legacy or analog signal chains; 2) SNR - higher SNR (65dB+) for premium audio, standard (63dB) for voice applications; 3) Package size - smaller for space-constrained designs; 4) Temperature range - automotive grade for extreme temperatures. Contact BeiLuo FAE team for personalized selection guidance.

Consider output type, SNR, package size, and temperature requirements.

Analog MEMS microphones output an analog voltage signal proportional to sound pressure, requiring an external ADC for digital processing. Digital MEMS microphones include an integrated ADC and output digital audio data (typically PDM format), simplifying system design and reducing noise pickup. Digital microphones are preferred for modern digital systems, while analog microphones offer flexibility in analog signal chains. Contact BeiLuo FAE team for additional guidance and support.

Choose digital for modern digital systems, analog for analog signal chains.

Digital MEMS microphones with PDM output connect to processors that support PDM input or dedicated audio codecs. The interface requires: 1) Clock input to microphone (typically 1-3MHz); 2) Data output from microphone; 3) Power supply (1.5-3.6V). Most modern application processors have built-in PDM interfaces. For processors without PDM support, use an external audio codec with PDM input. Contact BeiLuo FAE team for interface design guidance.

Verify your processor supports PDM or use external codec.

Goertek MEMS microphones offer excellent signal-to-noise ratios ranging from 60dB to 70dB depending on the model. High-performance models achieve up to 70dB SNR, suitable for high-quality audio recording and voice recognition applications. Standard models provide 60-65dB SNR for general-purpose applications. Contact BeiLuo FAE team for additional guidance and support.

Select based on your audio quality requirements.

Yes, Goertek offers automotive-grade MEMS microphones qualified to AEC-Q100 standards. These microphones feature extended temperature range (-40°C to +125°C) and enhanced reliability for automotive applications such as hands-free systems, voice recognition, and active noise cancellation. Contact BeiLuo FAE team for additional guidance and support.

Specify automotive-grade parts for automotive applications.

Goertek micro speakers require 0.5W to 1W amplifier power depending on the model. Compact speakers (SPS1115) need 0.5W, standard speakers (SPS1318) need 0.7W, and premium speakers (SPS1620) need 1.0W. Class-D amplifiers are recommended for their high efficiency and low heat generation. The amplifier should match the speaker impedance (typically 8Ω). Contact BeiLuo FAE team for amplifier recommendations.

Match amplifier power to speaker rating, use Class-D for efficiency.

Receivers are optimized for voice calls with frequency response focused on voice band (300Hz-8kHz) and higher impedance (32Ω) for lower power consumption. Speakers provide full audio range (300Hz-20kHz) with 8Ω impedance for music playback. Receivers are used for earpiece applications, while speakers are used for loudspeaker applications. Contact BeiLuo FAE team for application guidance.

Use receiver for earpiece, speaker for loudspeaker.

Goertek MEMS sensors support I2C and SPI digital interfaces. I2C is the most common interface, supporting multiple devices on the same bus with 2-wire connection (SDA, SCL). SPI offers higher data rates for demanding applications with 4-wire connection (MOSI, MISO, SCK, CS). Both interfaces are compatible with standard microcontrollers and application processors. Contact BeiLuo FAE team for interface guidance.

Choose I2C for simplicity, SPI for high speed.

Altitude can be calculated from pressure using the barometric formula: h = 44330 × (1 - (p/p0)^(1/5.255)), where h is altitude in meters, p is measured pressure, and p0 is sea level pressure (1013.25 hPa). For relative altitude changes, use: Δh = -8.3 × Δp (meters per hPa). Goertek pressure sensors provide the accurate pressure readings needed for altitude calculation. Contact BeiLuo FAE team for algorithm guidance.

Use barometric formula for altitude calculation.

Goertek MEMS sensors feature ultra-low power consumption: Pressure sensors (SPL06-007) use 2.7μA, accelerometers (SPA2032) use 6.5μA active and 0.5μA sleep, gyroscopes (SPG2032) use 3.2mA, and combo sensors (SPAC2032) use 3.5mA. These low power levels enable long battery life in portable and IoT devices. Contact BeiLuo FAE team for power optimization guidance.

Ultra-low power suitable for battery-operated devices.

Goertek achieves ±0.01mm tolerance for CNC-machined metal components and ±0.05mm for injection-molded plastic parts. Surface finishes down to Ra 0.4μm are available for metal components. These precision levels meet requirements for consumer electronics, automotive, and medical applications. Contact BeiLuo FAE team for precision component inquiries.

High precision suitable for demanding applications.

Goertek maintains ISO 9001 (Quality Management), ISO 14001 (Environmental Management), IATF 16949 (Automotive Quality), and ISO 13485 (Medical Devices) certifications. These certifications ensure consistent quality and compliance with industry standards. Full traceability and quality documentation are available. Contact BeiLuo FAE team for certification documentation.

Multiple certifications ensure quality and compliance.

For microphone array beamforming: 1) Use 2-4 digital MEMS microphones (recommend SPH0641LU4H); 2) Space microphones 20-40mm apart for voice frequencies; 3) Connect all microphones to shared clock with separate data lines; 4) Use processor with beamforming algorithm or dedicated audio DSP; 5) Implement delay-and-sum or adaptive beamforming algorithm. Contact BeiLuo FAE team for array design guidance.

Use multiple digital microphones with beamforming algorithm.

Standard lead times for Goertek products: Consumer-grade microphones and speakers 8-12 weeks, automotive-grade components 12-16 weeks, precision components 10-14 weeks, custom components 16-20 weeks. Sample quantities are typically available from stock with 1-2 week delivery. Contact BeiLuo sales team for current availability and scheduled delivery options.

Plan 12-16 week lead time for production orders.

Yes, Goertek provides custom component design and manufacturing services. Their engineering team can assist with design for manufacturability (DFM), material selection, acoustic optimization, and process optimization. Custom tooling and rapid prototyping are available. Contact BeiLuo FAE team for custom component inquiries and design support.

Custom design services available for unique requirements.