VM2020AA

VM2020 High Dynamic Range Bottom Port Piezoelectric MEMS Microphone with Differential Output PRELIMINARY DATASHEET GENERAL DESCRIPTION The VM2020 is an ultra-high AOP, high dynamic range, differential analog output piezoelectric MEMS microphone. This microphone consists of a piezoelectric sensor and circuitry to buffer and amplify the output. It has an acoustic overload point of 152dB SPL for audio capture in loud environments. The VM2020 has a small 3.76 mm X 2.95 mm X 1.3 mm package. This microphone is reflow solder compatible with no sensitivity degradation. FEATURES • • • • • • Ultra-high AOP Differential Output Low part-to-part variation High dynamic range Stable performance in all conditions Dust and water resistant to IP57 BLOCK DIAGRAM APPLICATIONS • • • Subwoofers Echo Cancellation Outdoor Applications Functional Block Diagram ORDERING INFORMATION Product Package Description Quantity VM2020AA 13” Tape and Reel 5,000 TYPICAL APPLICATION CIRCUIT Typical Application Circuit Document Name: VM2020_Datasheet Revision: U0.0.6 Page 1 of 10 info@vespermems.com Vesper reserves the right to alter the datasheet specifications without notification. Vesper assumes no liability for the use of engineering samples and offers no warranty for this product. VM2020 High Dynamic Range Bottom Port Piezoelectric MEMS Microphone with Differential Output PRELIMINARY DATASHEET TABLE OF CONTENTS SPECIFICATIONS .............................................................................................................. 3 ABSOLUTE MAXIMUM RATINGS ......................................................................................... 4 ENVIRONMENTAL ROBUSTNESS ........................................................................................ 4 RELIABILITY SPECIFICATIONS ........................................................................................... 4 TYPICAL PERFORMANCE CHARACTERISTICS ...................................................................... 5 SOLDER REFLOW PROFILE ................................................................................................ 5 HANDLING INSTRUCTIONS ................................................................................................ 5 DIMENSIONS AND PIN LAYOUT ......................................................................................... 6 PCB DESIGN AND LAND PATTERN LAYOUT ......................................................................... 6 TAPE AND REEL SPECIFICATIONS ...................................................................................... 7 LID MARKING ................................................................................................................... 8 SUPPORTING DOCUMENTS ................................................................................................ 8 COMPLIANCE INFORMATION ............................................................................................. 8 CONTACT DETAILS ........................................................................................................... 8 LEGAL INFORMATION ....................................................................................................... 8 REVISION HISTORY ........................................................................................................ 10 Document Name: VM2020_Datasheet Revision: U0.0.6 Page 2 of 10 info@vespermems.com Vesper reserves the right to alter the datasheet specifications without notification. Vesper assumes no liability for the use of engineering samples and offers no warranty for this product. VM2020 High Dynamic Range Bottom Port Piezoelectric MEMS Microphone with Differential Output PRELIMINARY DATASHEET SPECIFICATIONS All specifications are at 25°C, VDD = 1.8 V unless otherwise noted Parameter Symbol Conditions Min. Typ. Max. Units -66 -63 -60 dBV Acoustic Specifications Sensitivity 1 kHz, 94 dB SPL Signal-to-Noise Ratio SNR Total Harmonic Distortion THD Total Harmonic Distortion Acoustic Overload Point 94 dB SPL at 1 kHz signal, 20Hz to 50 dB(A) 94 dB SPL 0.1 % THD 149 dB SPL 1 % AOP 10.0% THD 152 dB SPL Roll Off Frequency 20kHz, A-weighted Noise -3dB at 1KHz 80 Directivity Hz Omni Polarity Increase in sound pressure Increase in output voltage Electrical Specifications Supply Voltage 1.6 Supply Current Power Supply Rejection Ratio VSupply ≤ 3.6 V PSRR Power Supply Rejection PSR Output Impedance ZOUT VDD = 1.8, 1kHz, 200mVPP Sine wave VDD = 1.8, 217Hz, 100mVPP square wave, 20 Hz – 20kHz, A-weighted 1.8 3.6 V 248 μA 90 dB -112 dB(A) 1100 Ω Output DC Offset Both Vout+ and Vout- 0.8 V Startup Time Within ±0.5dB of actual sensitivity 200 μS Document Name: VM2020_Datasheet Revision: U0.0.6 Page 3 of 10 info@vespermems.com Vesper reserves the right to alter the datasheet specifications without notification. Vesper assumes no liability for the use of engineering samples and offers no warranty for this product. VM2020 High Dynamic Range Bottom Port Piezoelectric MEMS Microphone with Differential Output PRELIMINARY DATASHEET ABSOLUTE MAXIMUM RATINGS Parameter Rating Units Supply Voltage -0.3 to +3.6 V Sound Pressure Level 160 dB re 20 μPa Operating Temperature Range -40 to +85 °C Storage Temperature Range -55 to +150 °C Mechanical Shock 10,000g per IEC 60028-2-27:2008 Vibration Per MIL-STD 883E, 2007.2 ENVIRONMENTAL ROBUSTNESS IP adherence is evaluated by 1kHz Sensitivity spec post stress Ingress Protection Type Description Dust Resistance IP5X; Water Immersion IPX7; 2 hrs drying time, dry environment RELIABILITY SPECIFICATIONS Stress Test Description Temperature Cycling Test -40°C to +125°C, 850 cycles High Temperature Operating Life +125°C, 1000 hours, biased High Temperature Storage +125°C, 1000 hours, unbiased Temperature Humidity Bias +85°C, 85% RH, 1000 hours, biased Reflow 3 reflow cycles with peak temperature of +260°C ESD-HBM 1 discharge, all pins, ± 2kV ESD-CDM 3 discharges, all pins, ± 750V Document Name: VM2020_Datasheet Revision: U0.0.6 Page 4 of 10 info@vespermems.com Vesper reserves the right to alter the datasheet specifications without notification. Vesper assumes no liability for the use of engineering samples and offers no warranty for this product. VM2020 High Dynamic Range Bottom Port Piezoelectric MEMS Microphone with Differential Output PRELIMINARY DATASHEET TYPICAL PERFORMANCE CHARACTERISTICS THD+N vs Amplitude at 1kHz Normalized Frequency Response SOLDER REFLOW PROFILE Solder Reflow Profile HANDLING INSTRUCTIONS The Piezo MEMS microphone is very robust to harsh environments such as dust and moisture. However, to avoid mechanical damage to the mic we recommend using appropriate handling procedures when manually handling the parts or when using pick and place equipment. The following guidelines will avoid damage: • Do not apply a vacuum to the bottom side of the microphone. A vacuum pen may be used with care on the top side only. • Do not apply very high air pressure over the port hole. • Do not insert any large particles or objects in the port hole. The microphone is robust to small particles per IP5x specification. • Do not board wash or clean after the reflow process or expose the acoustic port to harsh chemicals. Please refer to this Application Note for Microphone Assembly Guidelines. Document Name: VM2020_Datasheet Revision: U0.0.6 Page 5 of 10 info@vespermems.com Vesper reserves the right to alter the datasheet specifications without notification. Vesper assumes no liability for the use of engineering samples and offers no warranty for this product. VM2020 High Dynamic Range Bottom Port Piezoelectric MEMS Microphone with Differential Output PRELIMINARY DATASHEET DIMENSIONS AND PIN LAYOUT Pin Number Pin Name Description 1 VOUT- Negative Output Voltage 2 GND Ground 3 GND Ground 4 GND Ground 5 GND Ground 6 VDD Power Supply 7 VOUT+ Positive Output Voltage 8 GND Ground PCB DESIGN AND LAND PATTERN LAYOUT PCB and Solder Stencil Pattern – All dimensions are in mm Document Name: VM2020_Datasheet Revision: U0.0.6 Page 6 of 10 info@vespermems.com Vesper reserves the right to alter the datasheet specifications without notification. Vesper assumes no liability for the use of engineering samples and offers no warranty for this product. VM2020 High Dynamic Range Bottom Port Piezoelectric MEMS Microphone with Differential Output PRELIMINARY DATASHEET TAPE AND REEL SPECIFICATIONS Tape and Reel specification - All dimensions in millimeters (inches) Part Orientation in Reel (Note: dimensions not to scale) Document Name: VM2020_Datasheet Revision: U0.0.6 Page 7 of 10 info@vespermems.com Vesper reserves the right to alter the datasheet specifications without notification. Vesper assumes no liability for the use of engineering samples and offers no warranty for this product. VM2020 High Dynamic Range Bottom Port Piezoelectric MEMS Microphone with Differential Output PRELIMINARY DATASHEET LID MARKING Lid Marking Description SUPPORTING DOCUMENTS VM2020_Coupon_PCB_UserGuide - Vesper VM2020 Coupon PCB board user guide VM2020_3D_Model – Vesper VM2020 3D CAD Layout AN3 – Vesper Piezoelectric MEMS Microphone Assembly Guidelines AN7, Application Note AN7 – Improving Barge-in Performance on Smart Speakers with Ultra High Dynamic Range Microphone COMPLIANCE INFORMATION Electrostatic discharge (ESD) sensitive device: Although this product features industry standard protection circuitry, damage may occur if subjected to excessive ESD. Proper ESD precautions should be taken to avoid damage to the device. CONTACT DETAILS Vesper Technologies 77 Summer St Floor 8 Boston, MA 02110 Email: info@vespermems.com LEGAL INFORMATION For any questions or comments on the datasheet email: erratum@vespermems.com Document Name: VM2020_Datasheet Revision: U0.0.6 Page 8 of 10 info@vespermems.com Vesper reserves the right to alter the datasheet specifications without notification. Vesper assumes no liability for the use of engineering samples and offers no warranty for this product. VM2020 High Dynamic Range Bottom Port Piezoelectric MEMS Microphone with Differential Output PRELIMINARY DATASHEET Information furnished by Vesper is believed to be accurate and reliable. However, no responsibility is assumed by Vesper for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Vesper. Trademarks and registered trademarks are the property of their respective owners. Document Name: VM2020_Datasheet Revision: U0.0.6 Page 9 of 10 info@vespermems.com Vesper reserves the right to alter the datasheet specifications without notification. Vesper assumes no liability for the use of engineering samples and offers no warranty for this product. VM2020 High Dynamic Range Bottom Port Piezoelectric MEMS Microphone with Differential Output PRELIMINARY DATASHEET REVISION HISTORY Revision Date Description 0.0.0 02/22/2019 Initial Revision 0.0.1 03/11/2019 Added Reel Orientation Updated Reliability Spec 0.0.2 03/21/2019 Updated Product Name from VM2020 to VM2020AA for documentation 0.0.3 07/14/2019 Updated Vdd limits and output impedance 0.0.4 12/2/2019 Updated dimensions from 2 decimal points to 3 Added reference to Application Note AN7 0.0.5 07/28/2020 Added pin numbers to the 2d drawing 0.0.6 01/11/2021 Updated Typical Application Circuit Document Name: VM2020_Datasheet Revision: U0.0.6 Page 10 of 10 info@vespermems.com Vesper reserves the right to alter the datasheet specifications without notification. Vesper assumes no liability for the use of engineering samples and offers no warranty for this product.