Knowles SPK0641HT4H-1-T Top Port Digital MEMS Microphone

The SPK0641HT4H-1 is a miniature, high-performance, low power, top port silicon digital microphone
with a single-bit PDM output. Using Knowles’ proven high performance SiSonicTM MEMS technology,
the SPK0641HT4H-1 consists of an acoustic sensor, a low noise input buffer, and a sigma-delta
modulator. These devices are suitable for applications such as cellphones, smart phones, laptop
computers, sensors, digital still cameras, portable music recorders, and other portable electronic
devices where excellent wideband audio performance and RF immunity are required. The high
Signal-to-Noise Ratio (SNR) of the SPK0641HT4H-1 enhances the performance of far-field
applications and many complex, multi-microphone algorithms. In addition, the SPK0641HT4H-1 offers
multiple performance modes.

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Features
Highlights
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Key features

Low Distortion of 2.2% at 115dB SPL
Signal-to-Noise Ratio of 64.5dB(A)
Flat Frequency Response 20 - 20kHz
High Drive Capability
Low Current Consumption of 230uA in LowPower Mode
RF Shielded
PDM Output
Supports Dual Multiplexed Channels
Ultra-Stable Performance
Standard SMD Reflow
Omnidirectional
LGA Package
Standard 4x3x1 package size

Applications

Consumer Eletronics

knowles-sensors-SPK0641HT4H-T-digital-microphone datasheet

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Knowles SPH0644LM4H-1-8 Bottom Port Digital MEMS Microphone

The SPH0644LM4H-1 is a miniature, high-performance, low power, bottom port silicon digital microphone with a single bit PDM output. Using Knowles’ proven high performance SiSonicTM MEMS technology, the SPH0644LM4H-1 consists of an acoustic sensor, a low noise input buffer, and a sigma-delta modulator. These devices are suitable for applications such as cellphones, smart phones, laptop computers, sensors, digital still cameras, portable music recorders, and other portable electronic devices where excellent wideband audio performance and RF immunity are required. In addition, the SPH0644LM4H-1 offers multiple performance modes.

Knowles SPH0644LM4H-1-T Bottom Port Digital MEMS Microphone

The SPH0644LM4H-1 is a miniature, high-performance, low power, bottom port silicon digital microphone with a single bit PDM output. Using Knowles’ proven high performance SiSonicTM MEMS technology, the SPH0644LM4H-1 consists of an acoustic sensor, a low noise input buffer, and a sigma-delta modulator. These devices are suitable for applications such as cellphones, smart phones, laptop computers, sensors, digital still cameras, portable music recorders,and other portable electronic devices where excellent wideband audio performance and RF immunity are required. In addition, the SPH0644LM4H-1 offers multiple performance modes.

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