SPH1668LM4H-1

SPH1668LM4H-1 Datasheet

SPH1668LM4H-1

Part	Datasheet
SPH1668LM4H-1	SPH1668LM4H-1 (pdf)

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SPH1668LM4H-1 Digital Zero-Height SiSonicTM Microphone With Multiple Performance Modes The SPH1668LM4H-1 is a miniature, highperformance, low power, bottom port silicon digital microphone with a single bit PDM output. Using Knowles’ proven high performance SiSonicTM MEMS technology, the SPH1668LM4H-1 consists of an acoustic sensor, a low noise input buffer, and a high performance 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 SPH1668LM4H-1 offers multiple performance modes Features • Low Distortion of at 120dBSPL • High SNR of 65.5dB • Low Current Consumption of 230uA in Low-Power Mode • Flat Frequency Response • RF Shielded • Zero-Height MicTM • Supports Dual Multiplexed Channels • Standard SMD Reflow • Omnidirectional • Multiple performance modes Sleep, Low-Power, Performance • Sensitivity Matching • Small Size 03/04/2015 2014 Knowles Electronics ABSOLUTE MAXIMUM RATINGS Parameter VDD, DATA to Ground CLOCK to Ground SELECT to Ground Input Current Short Circuit Current to/from DATA Temperature Range Absolute Maximum Rating ±5 Indefinite to Ground or VDD -40 to +100 Units V mA sec °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. ACOUSTIC & ELECTRICAL SPECIFICATIONS TEST CONDITIONS 23 ±2°C, 55±20% R.H., VDD=1.8 V, fCLOCK=2.4 MHz, SELECT pin grounded, no load, unless otherwise indicated General Microphone Specifications Parameter Conditions Min Typ Max Units Supply Voltage VDD Clock Frequency Sleep Mode Low-Power Mode Range Performance Mode Sleep Current1,3 ISLEEP fCLOCK 250 kHz 250 KHz 815 KHz - 100 DC Output Fullscale = ±100 - % FS Directivity Omnidirectional Polarity Data Format Increasing sound pressure Increasing density of 1’s Cycle PDM Short Circuit Current ISC Grounded DATA pin 20 mA Output Load Fall-asleep Time4,5

PDF Datasheet Preview

SPH1668LM4H-1

Digital Zero-Height SiSonicTM Microphone With Multiple Performance Modes

The SPH1668LM4H-1 is a miniature, highperformance, low power, bottom port silicon digital microphone with a single bit PDM output. Using Knowles’ proven high performance SiSonicTM MEMS technology, the SPH1668LM4H-1 consists of an acoustic sensor, a low noise input buffer, and a high performance 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 SPH1668LM4H-1 offers multiple performance modes

Features
• Low Distortion of at 120dBSPL
• High SNR of 65.5dB
• Low Current Consumption of 230uA in Low-Power Mode
• Flat Frequency Response
• RF Shielded
• Zero-Height MicTM
• Supports Dual Multiplexed Channels
• Standard SMD Reflow
• Omnidirectional
• Multiple performance modes Sleep, Low-Power, Performance
• Sensitivity Matching
• Small Size
03/04/2015 2014 Knowles Electronics

ABSOLUTE MAXIMUM RATINGS

Parameter VDD, DATA to Ground CLOCK to Ground SELECT to Ground Input Current

Short Circuit Current to/from DATA Temperature Range

Absolute Maximum Rating ±5

Indefinite to Ground or VDD -40 to +100

Units V mA sec °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.

ACOUSTIC & ELECTRICAL SPECIFICATIONS

TEST CONDITIONS 23 ±2°C, 55±20% R.H., VDD=1.8 V, fCLOCK=2.4 MHz, SELECT pin grounded, no load, unless otherwise indicated

General Microphone Specifications

Parameter

Conditions

Min Typ Max Units

Supply Voltage VDD

Clock Frequency

Sleep Mode Low-Power Mode

Range

Performance

Mode

Sleep Current1,3 ISLEEP
fCLOCK 250 kHz
250 KHz
815 KHz
- 100

DC Output

Fullscale = ±100
- % FS

Directivity

Omnidirectional

Polarity Data Format

Increasing sound pressure

Increasing density of 1’s Cycle PDM

Short Circuit Current ISC

Grounded DATA pin
20 mA

Output Load Fall-asleep Time4,5

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived SPH1668LM4H-1 Datasheet file may be downloaded here without warranties.

Datasheet ID: SPH1668LM4H-1 644967