SPH1668LM4H-1

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 Revision: A Sheet 1 of 14 Features:  Low Distortion of 1.6% 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 1. ABSOLUTE MAXIMUM RATINGS Parameter Absolute Maximum Rating Units VDD, DATA to Ground -0.3, +5.0 V CLOCK to Ground -0.3, +5.0 V SELECT to Ground -0.3, +5.0 V ±5 mA Indefinite to Ground or VDD sec -40 to +100 °C Input Current Short Circuit Current to/from DATA Temperature Range 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 ±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 Symbol Supply Voltage Clock Frequency Range Conditions Min Typ Max Units 1.62 - 3.6 V 0 250 KHz 815 2.475 4.8 KHz fCLOCK ≤ 250 kHz 351 1.024 3.072 - 100 Fullscale = ±100 - 0 VDD Sleep Mode Low-Power Mode Performance Mode Sleep Current1,3 ISLEEP DC Output Directivity Increasing sound pressure Data Format Output Load % FS ISC Grounded DATA pin CLOAD Increasing density of 1’s ½ Cycle PDM 1 - 20 mA - - 140 pF fCLOCK ≤ 250 KHz - - 50 ms 4,6 fCLOCK = 2.4 MHz - - 100 ms VDD ≥ V(min) - - 100 ms - - 10 ms Power-up Time4 Mode-Change Time4 Revision: A Sheet 2 of 14 - 4,5 Fall-asleep Time Wake-up Time µA Omnidirectional Polarity Short Circuit Current MHz 03/04/2015 ©2014 Knowles Electronics Performance Mode TEST CONDITIONS: fCLOCK = 2.4 MHz, VDD=1.8 V, unless otherwise indicated Parameter Symbol Supply Current1,2,3 IDD Sensitivity1 S Conditions 94 dB SPL @ 1 kHz 94 dB SPL @ 1 kHz, Aweighted, fCLOCK=3.072 MHz 94 dB SPL @ 1 kHz 120 dB SPL @ 1 kHz Min Typ Max Units - 626 700 µA -30 -29 -28 dBFS - 65.5 - dB(A) - 0.1 1.6 - % Signal to Noise Ratio SNR Total Harmonic Distortion THD Acoustic Overload Point AOP 10% THD @ 1 kHz - 122 - dB SPL Power Supply Rejection Ratio PSRR 200 mVpp sinewave @ 1 kHz - 64 - dBV/FS PSR+N 100 mVpp 1/8 duty cycle rectangular waveform @ 217 Hz, A-weighted - -91 - dBFS(A) Min Typ Max Units - 236 270 µA Power Supply Rejection Low-Power Mode TEST CONDITIONS: fCLOCK = 768 kHz, VDD=1.8 V, unless otherwise indicated Parameter Symbol Conditions Supply Current2,3 IDD Sensitivity S 94 dB SPL @ 1 kHz -30 -29 -28 dBFS Signal to Noise Ratio SNR 94 dB SPL @ 1 kHz, A-weighted (20 Hz - 8 kHz) - 64 - dB(A) Total Harmonic Distortion THD 94 dB SPL @ 1 kHz - 0.1 - % Acoustic Overload Point AOP 10% THD @ 1 kHz - 122 - dB SPL Power Supply Rejection Ratio PSRR 200 mVpp sinewave @ 1 kHz - 63 - dBV/FS PSR+N 100 mVpp 1/8 duty cycle rectangular waveform @ 217 Hz, A-weighted (20Hz - 8kHz) - -91 - dBFS(A) Power Supply Rejection Revision: A Sheet 3 of 14 03/04/2015 ©2014 Knowles Electronics Microphone Interface Specifications Parameter Symbol Conditions Min Typ Max Units Logic Input High VIH 0.7xVDD - VDD+0.3 V Logic Input Low VIL -0.3 - 0.3xVDD V Logic Output High VOH IOUT = 2 mA VDD -0.45 - - V Logic Output Low VOL IOUT = 2 mA - - 0.45 V fCLOCK ≤ 2.4 MHz 40 - 60 % 2.4MHz ≤ fCLOCK ≤ 4.8 MHz 48 50 52 % TIL / TIH = 30% / 70% - - 3 ns Clock Duty Cycle Clock Rise/Fall Time tEDGE Delay Time for Data Assertion tDD 18 28 40 ns Delay Time for High Z7 tDZ 3 - 16 ns 1 100% tested. IDD varies with CLOAD according to: ΔIDD = 0.5*VDD*ΔCLOAD*fCLOCK. 3 Typical and Maximum specifications are measured at standard test conditions. 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 fCLOCK < 250 kHz to ISLEEP specification is met when transitioning from Active Mode to Sleep Mode. 6 Time from fCLOCK ≥ 351 kHz to all applicable specifications are met when transitioning from Sleep Mode to Active Mode. 2 7 tHOLD is dependent on CLOAD. Revision: A Sheet 4 of 14 03/04/2015 ©2014 Knowles Electronics 3. MICROPHONE STATE DIAGRAM Powered Down Mode VDD = 0 V Low-Power Mode 3.6 ≥ VDD ≥ 1.62 V 351 kHz ≤ fCLOCK ≤ 815 kHz Revision: A Sheet 5 of 14 Performance Mode 3.6 ≥ VDD ≥ 1.62 V 1.024 MHz ≤ fCLOCK ≤ 2.475 MHz 3.072 MHz ≤ fCLOCK ≤ 4.8 MHz Sleep Mode 3.6 ≥ VDD ≥ 1.62 V fCLOCK ≤ 250 kHz 03/04/2015 ©2014 Knowles Electronics 4. FREQUENCY RESPONSE CURVE dB (Nomalize to 1Khz) Typical Free Field Response Normalized to 1 kHz CLK=2.4MHz VDD=1.8V 20.00 18.00 16.00 14.00 12.00 10.00 8.00 6.00 4.00 2.00 0.00 -2.00 -4.00 -6.00 -8.00 -10.00 -12.00 -14.00 -16.00 -18.00 -20.00 100 1,000 10,000 Frequency (Hz) Revision: A Sheet 6 of 14 03/04/2015 ©2014 Knowles Electronics 5. INTERFACE CIRCUIT VDD VDD .1f .1f SELECT SELECT Mic (High) Mic (Low) DATA CLOCK Microphone SELECT Asserts DATA On Latch DATA On Mic (High) VDD Rising Clock Edge Falling Clock Edge Mic (Low) GND Falling Clock Edge Rising Clock Edge Note: Bypass capacitors near each Mic VDD PIN are recommented to provide maximum SNR performance. It should not contain Class 2 dielectrics. Detailed information on acoustic, mechanical, and system integration can be found in the latest SiSonicTM Design Guide application note. 6. TIMING DIAGRAM 1/FCLOCK VIH CLOCK tEDGE tEDGE VIL tDV DATA (SELECT = VDD) tDD tDZ VOH Mic (High) Data VOL tHOLD tDV DATA (SELECT = GND) Revision: A Sheet 7 of 14 High Z tDD High Z tDZ VOH Mic (Low) Data VOL tHOLD 03/04/2015 ©2014 Knowles Electronics 7. MECHANICAL SPECIFICATIONS Item Dimension Tolerance Length (L) 3.50 ±0.10 Width (W) 2.65 ±0.10 Height (H) 0.98 ±0.10 Ø0.325 ±0.05 Acoustic Port (AP) Pin # Pin Name Type Description 1 DATA Digital O PDM Output 2 SELECT Digital I Lo/Hi (L/R) Select Connect to VDD or GND 3 GROUND Power Ground 4 CLOCK Digital I Clock Input 5 VDD Power Power Supply Pull low to turn off and do not leave floated Notes: Pick Area only extends to 0.25 mm of any edge or hole unless otherwise specified. Dimensions are in millimeters unless otherwise specified. Tolerance is ±0.15mm unless otherwise specified Revision: A Sheet 8 of 14 03/04/2015 ©2014 Knowles Electronics 8. EXAMPLE LAND PATTERN 9. EXAMPLE SOLDER STENCIL PATTERN Notes: Dimensions are in millimeters unless otherwise specified. Detailed information on AP size considerations can be found in the latest SiSonicTM Design Guide application note. Further optimizations based on application should be performed. Revision: A Sheet 9 of 14 03/04/2015 ©2014 Knowles Electronics 10. PACKAGING & MARKING DETAIL Model Number Suffix Reel Diameter Quantity Per Reel SPH1641LM4H-1 -8 13” 5,900 Alpha Character A: “S”: Knowles SiSonicTM Production “E”: Knowles Engineering Samples “P”: Knowles Prototype Samples “JIN NUMBER”: Unique Job Identification Number for product traceability Pin 1 Notes: Dimensions are in millimeters unless otherwise specified. Vacuum pickup only in the pick area indicated in Mechanical Specifications. Tape & reel per EIA-481. Labels applied directly to reel and external package. Shelf life: Twelve (12) months when devices are to be stored in factory supplied, unopened ESD moisture sensitive bag under maximum environmental conditions of 30°C, 70% R.H. Revision: A Sheet 10 of 14 03/04/2015 ©2014 Knowles Electronics 11. RECOMMENDED REFLOW PROFILE tP TP Ramp-up Temperature TL tL TSMAX TSMIN tS Preheat Ramp-down 25°C Time Time 25°C to Peak Profile Feature Average Ramp-up rate (TSMAX to TP) Preheat  Temperature Min (TSMIN)  Temperature Max (TSMAX)  Time (TSMIN to TSMAX) (tS) Time maintained above:  Temperature (TL)  Time (tL) Peak Temperature (TP) Time within 5°C of actual Peak Temperature (tP) Ramp-down rate (TP to TSMAX) Time 25°C to Peak Temperature Pb-Free 3°C/second max. 150°C 200°C 60-180 seconds 217°C 60-150 seconds 260°C 20-40 seconds 6°C/second max 8 minutes max Notes: Based on IPC/JDEC J-STD-020 Revision C. All temperatures refer to topside of the package, measured on the package body surface. Revision: A Sheet 11 of 14 03/04/2015 ©2014 Knowles Electronics 12. ADDITIONAL NOTES (A) MSL (moisture sensitivity level) Class 1. (B) Maximum of 3 reflow cycles is recommended. (C) In order to minimize device damage:  Do not board wash or clean after the reflow process.  Do not brush board with or without solvents after the reflow process.  Do not directly expose to ultrasonic processing, welding, or cleaning.  Do not insert any object in port hole of device at any time.  Do not apply over 30 psi of air pressure into the port hole.  Do not pull a vacuum over port hole of the microphone.  Do not apply a vacuum when repacking into sealed bags at a rate faster than 0.5 atm/sec. 13. MATERIALS STATEMENT Meets the requirements of the European RoHS directive 2011/65/EC as amended. Meets the requirements of the industry standard IEC 61249-2-21:2003 for halogenated substances and Knowles Green Materials Standards Policy section on Halogen-Free. Ozone depleting substances are not used in the product or the processes used to make the product, including compounds listed in Annex A, B, and C of the “Montreal Protocol on Substances That Deplete the Ozone Layer.” Revision: A Sheet 12 of 14 03/04/2015 ©2014 Knowles Electronics 14. RELIABILITY SPECIFICATIONS Test Description Thermal Shock 100 cycles air-to-air thermal shock from -40oC to +125oC with 15 minute soaks. (IEC 68-2-4) High Temperature Storage 1,000 hours at +105oC environment (IEC 68-2-2 Test Ba) Low Temperature Storage 1,000 hours at -40oC environment (IEC 68-2-2 Test Aa) High Temperature Bias 1,000 hours at +105oC under bias (IEC 68-2-2 Test Ba) Low Temperature Bias 1,000 hours at -40oC under bias (IEC 68-2-2 Test Aa) Temperature / Humidity Bias 1,000 hours at +85oC/85% R.H. under bias. (JESD22-A101A-B) Vibration ESD-LID/GND ESD-MM 4 cycles of 20 to 2,000 Hz sinusoidal sweep with 20 G peak acceleration lasting 12 minutes in X, Y, and Z directions. (Mil-Std-883E, method 2007.2 A) 3 discharges of ±8 kV direct contact to lid while unit is grounded. (IEC 61000-4-2) 3 discharges of ±200V direct contact to I/O pins. (ESD STM5.2) Reflow 5 reflow cycles with peak temperature of +260oC Mechanical Shock 3 pulses of 10,000 G in the X, Y, and Z direction (IEC 68-2-27, Test Ea) Note: After reliability tests are performed, the sensitivity of the microphones shall not deviate more than 3 dB from its initial value. After 3 reflow cycles, the sensitivity of the microphones shall not deviate more than 1 dB from its initial value. Revision: A Sheet 13 of 14 03/04/2015 ©2014 Knowles Electronics 15. SPECIFICATION REVISIONS Revision A Specification Changes Initial Release (DCN 15-167). Date 03/04/15 Information contained herein is subject to change without notice. It may be used by a party at their own discretion and risk. We do not guarantee any results or assume any liability in connection with its use. This publication is not to be taken as a license to operate under any existing patents. Revision: A Sheet 14 of 14 03/04/2015 ©2014 Knowles Electronics