SPK0838HT4H-B

SPK0838HT4H-B Digital High-SNR SiSonicTM Microphone The SPK0838HT4H-B is a miniature, highperformance, low power, top port silicon digital microphone with a single bit PDM output. Using Knowles’ proven high performance SiSonicTM MEMS technology, the SPK0838HT4H-B 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 audio performance and RF immunity are required. The high Signal-to-Noise-Ratio (SNR) of the SPK0838HT4H-B enhances the performance of far-field applications and many complex, multi-microphone algorithms. Revision: A Sheet 1 of 13 Features: x High Signal to Noise Ration of 64dB(A) x Flat Frequency Response up to 20kHz x Low Current x RF Shielded x PDM Output x Supports Dual Multiplexed Channels x Ultra-Stable Performance x Standard SMD Reflow x Omnidirectional 2/21/2014 ©2014 Knowles Electronics SPK0838HT4H-B 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 Parameter Symbol Conditions Min Typ Max Units 1.6 1.8 3.6 V Supply Voltage1 VDD 2 IDD VDD = 1.8V - 500 600 μA Supply Current1,2 IDD VDD = 3.6V - 600 700 μA Sleep Current ISLEEP FCLOCK < 1 kHz, VDD = 1.8V - 4 8 μA Sleep Current1 ISLEEP FCLOCK < 1 kHz, VDD = 3.6V - 5 10 μA S 94 dB SPL @ 1 kHz -29 -26 -23 dBFS SNR 94 dB SPL @ 1 kHz, A-weighted - 64 - dB(A) - 0.25 1 % 118 121 - Supply Current Sensitivity 1 Signal to Noise Ratio Total Harmonic Distortion Acoustic Overload Point Power Supply Rejection Ratio Power Supply Rejection DC Output THD AOP 94 dB SPL @ 1 kHz, S = Typ 10% THD @ 1 kHz, S = Typ, VDD = 3.6V PSRR 200 mVpp sinewave @ 1 kHz - 65 - PSR+N 100 mVpp square wave @ 217 Hz, A-weighted - -87 - Fullscale = ±100 - -5 - Directivity Polarity Revision: A Sheet 2 of 13 dB SPL dBFS /V dBFS (A) % FS Omnidirectional Increasing sound pressure Increasing density of 1’s 2/21/2014 ©2014 Knowles Electronics SPK0838HT4H-B Parameter Symbol Conditions Min Data Format Typ Max Units ½ Cycle PDM Logic Input High VIH 0.65xVDD - 3.6 V Logic Input Low VIL GND-0.3 - 0.35xVDD V Logic Output High VOH IOUT = 2 mA 0.7xVDD - VDD V Logic Output Low VOL IOUT = 2 mA GND - 0.3xVDD V SELECT (high) VDD -0.2 - 3.6 V SELECT (low) GND - GND+0.2 V 2 - 10 mA - - 160 pF Short Circuit Current Output Load ISC Grounded DATA pin CLOAD Fall-asleep Time3,4 FCLOCK < 1 kHz - - 10 ms 3,5 FCLOCK ≥ 1 MHz - - 20 ms Powered Down→Active Mode - - 50 ms Active→Powered Down→Active Mode - - 125 ms 1.0 - 3.25 MHz 40 - 60 % - - 13 ns 47 - - ns 18 - - ns - - 115 ns 0 - 16 ns Wake-up Time Startup Time 3 Restart Time3 Clock Frequency FCLOCK Clock Duty Cycle Clock Rise/Fall Time Data Time Delay Time to Data Line Driven Delay Time to Valid Data Delay Time to High Z6 tEDGE tSRTUP + tEDGE Max CLOAD tDD tDV tDZ Max CLOAD 1 100% tested. IDD varies with CLOAD according to: ΔIDD = 0.5*VDD*ΔCLOAD*FCLOCK. 3 Valid microphones states are: Powered Down Mode (mic off), Sleep Mode (low current, DATA = high-Z, fast startup), and Active Mode (normal operation). 4 Time from FCLOCK < 1 kHz to ISLEEP specification is met when transitioning from Active Mode to Sleep Mode. 5 Time from FCLOCK ≥ 1 MHz to all applicable specifications are met when transitioning from Sleep Mode to Active Mode. 6 tHOLD is dependent on CLOAD 2 Revision: A Sheet 3 of 13 2/21/2014 ©2014 Knowles Electronics SPK0838HT4H-B 3. MICROPHONE STATE DIAGRAM Active Mode Powered Down Mode 4. VDD = On FCLOCK < 1 kHz Sleep Mode VDD = Off HYSTERESIS DIAGRAM OUT High VHYST Low VH-L Revision: A Sheet 4 of 13 VL-H CLOCK 2/21/2014 ©2014 Knowles Electronics SPK0838HT4H-B 5. FREQUENCY RESPONSE CURVE Sensitivity (dB) Typical Free Field Response Normalized to 1kHz 20 18 16 14 12 10 8 6 4 2 0 -2 -4 -6 -8 -10 -12 -14 -16 -18 -20 100 1,000 10,000 Frequency (Hz) Revision: A Sheet 5 of 13 2/21/2014 ©2014 Knowles Electronics SPK0838HT4H-B 6. INTERFACE CIRCUIT VDD VDD .1Pf .1Pf 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: All Ground pins must be connected to ground. Bypass capacitors should be placed next to each Vdd pin for maximum performance. Capacitors near the microphone 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. 7. 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 6 of 13 High Z tDD High Z tDZ VOH Mic (Low) Data VOL tHOLD 2/21/2014 ©2014 Knowles Electronics SPK0838HT4H-B 8. MECHANICAL SPECIFICATIONS Item Dimension Tolerance Units Length (L) 4.00 ±0.10 mm Width (W) 3.00 ±0.10 mm Height (H) 1.00 ±0.10 mm Acoustic Port (AP) Ø0.25 ±0.075 mm Pin # Pin Name Type Description 1 VDD Power Power Supply 2 SELECT Non-Digital Input Lo/Hi (L/R) Select This pin is internally pulled low. 3 CLOCK Digital I Clock Input 4 DATA Digital O PDM Output 5 GROUND Power Ground 6 GROUND Power Ground 7 GROUND Power Ground 8 GROUND Power Ground 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 7 of 13 2/21/2014 ©2014 Knowles Electronics SPK0838HT4H-B 9. EXAMPLE LAND PATTERN 10. 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 8 of 13 2/21/2014 ©2014 Knowles Electronics SPK0838HT4H-B 11. PACKAGING & MARKETING DETAIL Model Number Suffix SPK0838HT4H-B -7 Reel Diameter 13” Quantity Per Reel 5,700 YWW: Year/Week date code Letter: “K” Alpha Character A: Pin 1 “S”: Manufactured in China “M”: Manufactured in Malaysia “I”: Manufactured in Itasca Version Number Vx: Ex: Pre-proto version number x Px: Proto & EVT version number x Mx: Mass production version number x “JIN NUMBER”: Unique Job Identification Number for product traceability 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 9 of 13 2/21/2014 ©2014 Knowles Electronics SPK0838HT4H-B 12. 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 x Temperature Min (TSMIN) x Temperature Max (TSMAX) x Time (TSMIN to TSMAX) (tS) Time maintained above: x Temperature (TL) x 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 10 of 13 2/21/2014 ©2014 Knowles Electronics SPK0838HT4H-B 13. ADDITIONAL NOTES (A) 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. (B) MSL (moisture sensitivity level) Class 1. (C) Maximum of 3 reflow cycles is recommended. (D) In order to minimize device damage: x Do not board wash or clean after the reflow process. x Do not brush board with or without solvents after the reflow process. x Do not directly expose to ultrasonic processing, welding, or cleaning. x Do not insert any object in port hole of device at any time. x Do not apply over 30 psi of air pressure into the port hole. x Do not pull a vacuum over port hole of the microphone. x Do not apply a vacuum when repacking into sealed bags at a rate faster than 0.5 atm/sec. 14. 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 11 of 13 2/21/2014 ©2014 Knowles Electronics SPK0838HT4H-B 15. 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 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) ESD-HBM 3 discharges of ±2 kV direct contact to I/O pins. (ESD STM5.2) ESD-LID/GND ESD-MM 3 discharges of ±8 kV direct contact to lid while unit is grounded. (IEC 61000-4-2) 3 discharges of ±2 kV direct contact to I/O pins. (MIL 883E, Method 3015.7) 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. Revision: A Sheet 12 of 13 2/21/2014 ©2014 Knowles Electronics SPK0838HT4H-B 16. SPECIFICATIONS REVISIONS Revision A Specification Changes Initial Release (C10115620) Date 2/21/2014 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 13 of 13 2/21/2014 ©2014 Knowles Electronics