InvenSense INMP411ACEZ-R0 Manual Download | Manualshive

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INMP441

SUPPORTING DOCUMENTS

For additional information, see the following documents.

EVALUATION BOARD USER GUIDE

UG-303

,

EV_

INMP441Z-FX: Bottom Port I

2

S Output MEMS Microphone Evaluation Board

UG-362

,

EV_

INMP441Z SDP Daughter Board for the INMP441 I

2

S MEMS Microphone

APPLICATION NOTES (PRODUCT SPECIFIC)

AN-0208

, High Performance Digital MEMS Microphone’s Simple Interface to SigmaDSP Audio Processor

AN-0266

, High Performance Digital MEMS Microphone Standard Digital Audio Interface to Blackfin DSP

APPLICATION NOTES (GENERAL)

AN-1003

, Recommendations for Mounting and Connecting the Invensense, Inc., Bottom-Ported MEMS Microphones

AN-1068

, Reflow Soldering of the MEMS Microphone

AN-1112,

Microphone Specifications Explained

AN-1124

, Recommendations for Sealing Invensense, Inc., Bottom-Port MEMS Microphones from Dust and Liquid Ingress

AN-1140

, Microphone Array Beamforming

Page 16 of 21

Document Number: DS-INMP441-00

Revision: 1.1

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Summary of Contents for INMP411ACEZ-R0

Page 1: ...25 484 7 885 423 and 7 961 897 Other patents are pending APPLICATIONS Teleconferencing Systems Remote Controls Gaming Consoles Mobile Devices Laptops Tablets Security Systems FEATURES Digital I S Interface with High Precision 24 Bit Data High SNR of 61 dBA High Sensitivity of 26 dBFS Flat Frequency Response from 60 Hz to 15 kHz Low Current Consumption of 1 4 mA High PSR of 75 dBFS Small 4 72 3 76 ...

Page 2: ...d Soldering Profile 7 Pin Configurations And Function Descriptions 8 Table 6 Pin Function Descriptions 8 Typical Performance Characteristics 9 Theory of Operation 10 Understanding Sensitivity 10 Power Management 10 Normal Operation 10 Standby Mode 10 Power Down Mode 10 Startup 10 I S Data Interface 11 Data Output Mode 11 Data Word Length 11 Data Word Format 11 Digital Microphone Sensitivity 12 Syn...

Page 3: ...plication Notes General 16 PCB Design And Land Pattern Layout 17 PCB Material And Thickness 18 Handling Instructions 18 Pick And Place Equipment 18 Reflow Solder 18 Board Wash 18 Outline Dimensions 19 Ordering Guide 20 Revision History 20 Compliance Declaration Disclaimer 21 Page 3 of 21 Document Number DS INMP441 00 Revision 1 1 ...

Page 4: ... point 60 Hz 2 High frequency 3 dB point 15 kHz Total Harmonic Distortion THD 105 dB SPL 3 Power Supply Rejection PSR 217 Hz 100 mVp p square wave superimposed on VDD 1 8 V 75 dBFS Maximum Acoustic Input Peak 120 dB SPL Noise Floor 20 Hz to 20 kHz A weighted RMS 87 dBFS POWER SUPPLY Supply Voltage VDD 1 62 3 63 V Supply Current IS VDD 1 8 V Normal Mode 1 4 1 6 mA Standby 0 8 mA Power Down 2 µA VDD...

Page 5: ...tput Low VOL VDD 3 3 V ISINK 0 5 mA 0 1 VDD V 1 Voltage Output Low VOL VDD 3 3 V ISINK 1 7 mA 0 3 VDD V 1 Voltage Output High VOH VDD 3 3 V ISINK 1 7 mA 0 7 VDD V 1 Voltage Output High VOH VDD 3 3 V ISINK 0 5 mA 0 9 VDD V 1 Note 1 Limits based on characterization results not production tested TABLE 3 SERIAL DATA PORT TIMING SPECIFICATIONS PARAMETER CONDITIONS MIN TYP MAX UNITS NOTES tSCH SCK high ...

Page 6: ...ltage 0 3 V to VDD 0 3 V or 3 63 V whichever is less Sound Pressure Level 160 dB Mechanical Shock 10 000 g Vibration Per MIL STD 883 Method 2007 Test Condition B Temperature Range Biased 40 C to 85 C Storage 55 C to 150 C ESD CAUTION ESD electrostatic discharge sensitive device Charged devices and circuit boards can discharge without detection Although this product features patented or proprietary...

Page 7: ... 45 sec to 75 sec 50 sec Liquidous Temperature TL 183 C 217 C Peak Temperature TP 215 C 3 C 3 C 260 C 0 C 5 C Time Within 5 C of Actual Peak Temperature tP 20 sec to 30 sec 20 sec to 30 sec Ramp Down Rate 3 C sec max 3 C sec max Time 25 C t25 C to Peak Temperature 5 min max 5 min max The reflow profile in Table 5 is recommended for board manufacturing with InvenSense MEMS microphones All microphon...

Page 8: ...erface 4 L R Left Right Channel Select When set low the microphone outputs its signal in the left channel of the I S frame When set high the microphone outputs its signal in the right channel 5 GND Ground Connect to ground on the PCB 6 GND Ground Connect to ground on the PCB 7 VDD Power 1 8 V to 3 3 V This pin should be decoupled to Pin 6 with a 0 1 μF capacitor 8 CHIPEN Microphone Enable When set...

Page 9: ...ency Response Measured Figure 6 Power Supply Rejection PSR vs Frequency 10 10 8 6 4 2 0 2 4 6 8 50 100 10k FREQUENCY Hz SENSITIVITY dB 1k 10 20 10 0 10 100 10k FREQUENCY Hz AMPLITUDE dB 1k 0 80 100 10k FREQUENCY Hz PSR dB 1k 10 20 30 40 50 60 70 Page 9 of 21 Document Number DS INMP441 00 Revision 1 1 ...

Page 10: ...lity The INMP441 has excellent gain linearity and the sensitivity test result at 94 dB is derived with very high confidence from the test data POWER MANAGEMENT The INMP441 has three different power states normal operation standby mode and power down mode Normal Operation The microphone becomes operational 2 18 clock cycles 85 ms with SCK at 3 072 MHz after initial power up The CHIPEN pin then cont...

Page 11: ...LSB is output so that another microphone can drive the common data line The SD trace should have a pull down resistor to discharge the line during the time that all microphones on the bus have tri stated their outputs A 100 kΩ resistor is sufficient for this as shown in Figure 7 Data Word Length The output data word length is 24 bits per channel The INMP441 must always have 64 clock cycles for eve...

Page 12: ... sensitivity of the INMP441 An acoustic input signal of a 1 kHz sine wave at 94 dB SPL applied to the INMP441 results in an output signal with a 26 dBFS level This means that the output digital word peaks at 26 dB below the digital full scale level A common misunderstanding is that the output has an RMS level of 29 dBFS however this is not the case because of the definition of a 0 dBFS sine wave M...

Page 13: ...lter to remove unwanted DC and very low frequency components This shows the high pass characteristics for a nominal sampling rate of 48 kHz The cutoff frequency scales with changes in sampling rate TABLE 7 HIGH PASS FILTER CHARACTERISTICS FREQUENCY ATTENTUATION 3 7 Hz 3 dB 10 4 Hz 0 5 dB 21 6 Hz 0 1 dB This digital filter response is in addition to the natural high pass response of the INMP441 MEM...

Page 14: ... 12 Digital Low Pass Filter Magnitude Response 100 90 80 70 60 50 40 30 20 10 0 0 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 1 0 MAGNITUDE dB NORMALIZED FREQUENCY fS Page 14 of 21 Document Number DS INMP441 00 Revision 1 1 ...

Page 15: ...e capacitor should be as short as possible and the trace should stay on a single layer with no vias For maximum effectiveness locate the capacitor equidistant from the power and ground pins or if equidistant placement is not possible slightly closer to the power pin Thermal connections to the ground planes should be made on the far side of the capacitor as shown in Figure 13 Figure 13 Recommended ...

Page 16: ...e Interface to SigmaDSP Audio Processor AN 0266 High Performance Digital MEMS Microphone Standard Digital Audio Interface to Blackfin DSP APPLICATION NOTES GENERAL AN 1003 Recommendations for Mounting and Connecting the Invensense Inc Bottom Ported MEMS Microphones AN 1068 Reflow Soldering of the MEMS Microphone AN 1112 Microphone Specifications Explained AN 1124 Recommendations for Sealing Invens...

Page 17: ...ch in diameter A 0 5 mm to 1 mm 0 020 inch to 0 040 inch diameter for the hole is recommended Align the hole in the microphone package with the hole in the PCB The exact degree of the alignment does not affect the performance of the microphone as long as the holes are not partially or completely blocked Figure 14 Suggested PCB Land Pattern Layout Figure 15 Suggested Solder Paste Stencil Pattern La...

Page 18: ...ecause the microphone hole is on the bottom of the package the pickup tool can make contact with any part of the lid surface Do not pick up the microphone with a vacuum tool that makes contact with the bottom side of the microphone Do not pull air out of or blow air into the microphone port Do not use excessive force to place the microphone on the PCB REFLOW SOLDER For best results the soldering p...

Page 19: ...cification Top View 3 86 3 76 3 66 4 82 4 72 4 62 BOTTOM VIEW TOP VIEW SIDE VIEW 0 275 0 250 DIA 0 225 5 0 96 DIA 1 56 DIA 1 05 BSC 1 07 0 30 1 33 BSC 1 05 0 98 0 88 0 24 REF 0 73 REF 2 66 BSC 3 14 REF 4 10 REF 0 40 0 60 PINS 1 8 1 9 6 4 REFERENCE CORNER PIN 1 YYXXXX 441 LOT TRACEABILITY CODE PIN 1 INDICATION PART NUMBER DATECODE Page 19 of 21 Document Number DS INMP441 00 Revision 1 1 ...

Page 20: ... 1 000 EV_INMP441 FX Flexible Evaluation Board EV_INMP441 Evaluation Board 13 Tape and Reel 7 Tape and reel to be discontinued Contact sales invensense com for availability REVISION HISTORY REVISION DATE REVISION DESCRIPTION 02 06 2014 1 0 Initial Release 05 21 2014 1 1 Updated Compliance Disclaimer Page 20 of 21 Document Number DS INMP441 00 Revision 1 1 ...

Page 21: ...the use of products and services detailed therein This includes but is not limited to claims or damages based on the infringement of patents copyrights mask work and or other intellectual property rights Certain intellectual property owned by InvenSense and described in this document is patent protected No license is granted by implication or otherwise under any patent or patent rights of InvenSen...

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