SPK0641HT4H-1

SPK0641HT4H-1 Digital SiSonicTM Microphone With Multiple Performance Modes SPK0641HT4H-1 Rev A Datasheet 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. Product 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 Sensitivity Matching Standard 4x3x1 package size Typical Applications • Portable electronics • Cellphones • Laptop Computers knowles.com Datasheet SPK0641HT4H-1 Rev A • Tablets • Digital Still Cameras • Portable Music Recorders © Copyright 2016 Knowles 1 Absolute Maximum Ratings Table 1: Absolute Maximum Ratings Parameter Absolute Maximum Rating Units Parameter Vdd, DATA to Ground -0.3, +5.0 V Input Current CLOCK to Ground -0.3, +5.0 V Short Circuit to/from DATA SELECT to Ground -0.3, +5.0 V Temperature Absolute Maximum Rating Units ±5 mA Indefinite to Ground or Vdd sec -40 to +100 ºC Stresses exceeding these “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only. Functional operation at these or any other conditions beyond those indicated under “Acoustic & Electrical Specifications” is not implied. Exposure beyond those indicated under “Acoustic & Electrical Specifications” for extended periods may affect device reliability. Acoustic & Electrical Specifications1 Table 2: General Microphone Specifications Test Conditions: 23±2°C, 55±20% R.H., Vdd=1.8V, Fclock=2.4MHz, SEL grounded, no load, Tedge