Digital Zero-Height SiSonic TM Microphone With Multiple Performance Modes
The SPH0641LM4H-1 is a miniature, high-performance, low power, bottom port silicon digital microphone with a single bit PDM output. Using Knowles’ proven high performance SiSonic TM MEMS technology, the SPH0641LM4H-1 consists of an acoustic nsor, a low noi input buffer, and a sigma-delta modulator. The devices are suitable for applications such as cellphones, smart phones, laptop computers, nsors, digital still cameras, portable music recorders, and other portable electronic devices where excellent wideband audio performance and RF immunity are required. In addition, the SPH0641LM4H-1 offers multiple performance modes Features:
∙High SNR of 64dB
∙Low Current Consumption of 230uA in Low-Power Mode
∙Flat Frequency Respon
∙RF Shielded
∙Zero-Height Mic TM
∙Supports Dual Multiplexed Channels ∙Standard SMD Reflow
∙Omnidirectional
∙Multiple performance modes (Sleep, Low-Power, Standard Performance) ∙Sensitivity Matching
∙Small Size
win10安全模式怎么进入八段锦完整教学口令1.ABSOLUTE MAXIMUM RATINGS
Stress exceeding the “Absolute Maximum Ratings” may cau permanent damage to the device. The are stress ratings only. Functional operation at the or any other conditions beyond tho indicated under “Acoustic
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& Electrical Specifications” is not implied. Exposure beyond tho indicated under “Acoustic & Electrical Specifications” for extended periods may affect device reliability.
2. ACOUSTIC & ELECTRICAL SPECIFICATIONS
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TEST CONDITIONS: 23 ±2°C, 55±20% R.H., V DD=1.8 V, f CLOCK=2.4 MHz, SELECT pin grounded, no load, unless otherwi indicated
Standard Performance Mode TEST CONDITIONS: f = 2.4 MHz, V=1.8 V, unless otherwi indicated
走过的拼音Low-Power Mode
Microphone Interface Specifications
2 I鼓舞士气
varies with C LOAD according to: ΔI DD = 0.5*V DD*ΔC LOAD*f CLOCK.
DD
3 Typical and Maximum specifications are measured at standard test conditions.
被打屁屁的故事4 Valid microphones states are: Powered Down Mode (mic off), Sleep Mode (low current, DATA = high-Z, fast startup), Low-Power Mode (low clock speed) and Standard Performance Mode (normal operation).
5 Time from f
< 250 kHz to I SLEEP specification is met when transitioning from Active Mode to Sleep Mode.
CLOCK
6 Time from f
≥ 351 kHz to all applicable specifications are met when transitioning from Sleep Mode to Active Mode.
CLOCK
7 t
is dependent on C LOAD.
HOLD
关于梦想的口号3.MICROPHONE STATE DIAGRAM
