SPH0641LM4H-1 TM Digital Zero-Height SiSonic Microphone With Multiple Performance Modes The SPH0641LM4H-1 is a miniature, high- Features: performance, low power, bottom port High SNR of 64dB silicon digital microphone with a single bit Low Current Consumption of 230uA in PDM output. Using Knowles proven high Low-Power Mode TM performance SiSonic MEMS technology, Flat Frequency Response the SPH0641LM4H-1 consists of an acoustic RF Shielded TM sensor, a low noise input buffer, and a Zero-Height Mic sigma-delta modulator. These devices are Supports Dual Multiplexed Channels suitable for applications such as cellphones, Standard SMD Reflow smart phones, laptop computers, sensors, Omnidirectional digital still cameras, portable music Multiple performance modes (Sleep, recorders, and other portable electronic Low-Power, Standard Performance) devices where excellent wideband audio Sensitivity Matching performance and RF immunity are required. Small Size In addition, the SPH0641LM4H-1 offers multiple performance modes Revision: A 04/17/2014 Sheet 1 of 14 2014 Knowles Electronics SPH0641LM4H-1 1. ABSOLUTE MAXIMUM RATINGS Parameter Absolute Maximum Rating Units V , DATA to Ground -0.3, +5.0 V DD CLOCK to Ground -0.3, +5.0 V SELECT to Ground -0.3, +5.0 V Input Current 5 mA Short Circuit Current to/from DATA Indefinite to Ground or V sec DD Temperature Range -40 to +100 C 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. 2. ACOUSTIC & ELECTRICAL SPECIFICATIONS TEST CONDITIONS: 23 2C, 5520% R.H., V =1.8 V, f =2.4 MHz, SELECT pin grounded, no load, unless DD CLOCK otherwise indicated General Microphone Specifications Parameter Symbol Conditions Min Typ Max Units Supply Voltage V 1.62 - 3.6 V DD Sleep Mode 0 250 KHz Clock Low-Power Mode 351 800 KHz Frequency Standard 1.024 2.475 Range MHz Performance Mode 3.072 4.8 1,3 Sleep Current I f 250 kHz - 80 A SLEEP CLOCK DC Output Fullscale = 100 - 0 - % FS Directivity Omnidirectional Increasing sound Polarity Increasing density of 1s pressure Data Format Cycle PDM Short Circuit Current I Grounded DATA pin 1 - 20 mA SC Output Load C - - 140 pF LOAD 4,5 Fall-asleep Time f 250 kHz - - 10 ms CLOCK 4,6 Wake-up Time f 351 kHz - - 15 ms CLOCK 4 Power-up Time V V(min) - - 50 ms DD 4 Mode-Change Time - - 10 ms Revision: A 04/17/2014 Sheet 2 of 14 2014 Knowles Electronics