UT-P2023

MEMS SPEAKERS ADAP UT-P2023 | DATASHEET Adap UT-P2023 MEMS speakers are ideal for free-field audio solutions such as wearables. Due to its small size and low weight, Adap UT-P2023 offers maximum flexibility for outstanding design approaches. Providing a wide bandwidth, it enables high-res audio applications. Adap UT-P2023 produces a tangible, clear, and rich sound that immerses the listener into their personal audio environment. FEATURES APPLICATIONS „ Enables modern, lightweight and ergonomic designs for sophisticated wearables Adap UT-P2023 speakers can be used for free-field audio systems as well as wearables. For 2-way earphones Adap UT-P2023 speakers are suitable as tweeters. „ Seamlessly integrates into acoustic devices for everyday use „ Extends battery life due to the speaker’s low power consumption „ Enhanced cover for handling protection „ Competitive sound pressure level „ No magnetic field „ Low heat generation Adap UT-P2023 | Datasheet Released in February 2021, updated in May 2021 USound GmbH | www.usound.com | sales@usound.com CONTENT SPECIFICATIONS 3 MECHANICAL DIMENSIONS 4 FORCE ON SPEAKER 5 TEST CONDITIONS 6 REFERENCE DRIVING CIRCUIT 7 ACOUSTIC PERFORMANCE 8 HANDLING 11 INTEGRATION 12 SPEAKER GASKETS 13 CONNECTIVITY 14 LABELLING 14 PACKAGING 15 REVISION HISTORY February 2021: Release May 2021: Capacity value changed, page 3; speaker gasket information added, page 13 2 Adap UT-P2023 | Datasheet Released in February 2021, updated in May 2021 USound GmbH | www.usound.com | sales@usound.com SPECIFICATIONS General acoustics fres @ 15 VP [kHz] 2.9 [-] 0.7 Effective membrane surface – SD [mm²] 12 Equivalent volume – VAS [mm³] 40 Front volume inside speaker [mm³] 5.6 Back volume inside speaker [mm³] 20 SPL @ 1 kHz / 15 VP [dB] 53 ±3.0 SPL @ 4 kHz / 15 VP [dB] 71 ±3.0 SPL @ 10 kHz / 15 VP [dB] 76 ±3.0 SPL @ 1 kHz / 5 VP [dB] 43 ±3.0 SPL @ 4 kHz / 5 VP [dB] 60 ±3.0 SPL @ 10 kHz / 5 VP [dB] 65 ±3.0 THD @ 1 kHz / 5 VP [%] 16 +8 THD @ 4 kHz / 5 VP [%] 5 +3 THD @ 10 kHz / 5 VP [%] 4 +3 [nF] 26 ±5 Q @ fres / 15 VP ±15% Acoustics in baffle (IEC 60268-5) Electronics Capacity Operating conditions Maximum AC voltage (peak) – up to 40 kHz [VP] 15 Maximum DC voltage [V] 15 [mAP] 200 [mW] 46 Maximum AC current (peak) Power consumption* With IEC noise (60268-1) incl. high pass @ 2 kHz @ 60 dB *Power consumption measured with the reference driving circuit, shown on page 7; Supply voltage: 3.6 V. 3 Adap UT-P2023 | Datasheet Released in February 2021, updated in May 2021 USound GmbH | www.usound.com | sales@usound.com MECHANICAL DIMENSIONS Cover Membrane and plate Positive pole contact Negative pole contact Ring Orientation mark negative pole Back port Protection sheet Figure 1: Mechanical drawings: perspective view 0.90 ±0.02 1.30 ±0.15 0 0.1 0± t por k c Ba .02 1 ±0 5.50 ±0.02 0.18 ±0.06 Bottom to contact 2.78 ±0.04 4.70 ±0.10 1.60 ±0.03 1.58 ±0.15 0.80 ±0.05 3.60 ±0.03 DMC format: 8x18. Pixel size 0.2mm 3.50 ±0.02 0.8 1.12 ±0.05 1.40 ±0.05 6.70 ±0.10 Figure 2: Mechanical drawings: top/down/side view Mechanics Size [mm] 6.7 x 4.7 x 1.58 Total speaker weight [mg] 80 [mm³] 50 Total speaker cubic volume 4 Adap UT-P2023 | Datasheet Released in February 2021, updated in May 2021 USound GmbH | www.usound.com | sales@usound.com FORCE ON SPEAKER Type of stress Maximum handling force [N] Maximum permanent force [N] Front face compression 20 13 Side face compression 20 13 3 point bending 10 5 Force on membrane 0 0 Figure 3: Left: front face compression, centre: side face compression, right: 3-point bending 5 Adap UT-P2023 | Datasheet Released in February 2021, updated in May 2021 USound GmbH | www.usound.com | sales@usound.com TEST CONDITIONS ACOUSTICS General Measurement system Audio Precision APx Measurement signal Exp. Sweep Voltage levels – audio VDC + VAC 15 V + 15 VP Applied back volume Open (infinite) Baffle Baffle type IEC 60268-5 Mic distance 3 cm Reference distance 10 cm Microphone GRAS 46AC Microphone diameter 1/2” BAFFLE MEASUREMENT ADAPTER DETAIL A MEMS Speaker 4xPogo-pins 3 0.3 Sealing Gasket IEC Baffle A Sealing O-Ring Figure 4: The outlet through the baffle for the speaker has the same shape as the inside of the speaker cover 6 Adap UT-P2023 | Datasheet Released in February 2021, updated in May 2021 USound GmbH | www.usound.com | sales@usound.com REFERENCE DRIVING CIRCUIT In Figure 5 and Figure 6 the reference driving circuit is shown. It includes the amplifier TI LM48580 and the DC boost converter TPS61046. 1 The boost converter is configured to provide a constant 15 VDC offset for the speaker. The amplifier circuit itself is based on the typical application diagram from the LM48580 datasheet. It is based on a single-ended input signal but can also be modified according to the datasheet to a differential input. 2 3 L1 2 3 10uH +1.8V to +5.5V A1 U1 VIN A2 C1 1uF 10V B2 SW C1 L1 EN FB 10uH TPS61046 VB_ENABLE GND +1.8V to +5.5V A1 U1 VIN A2 C1 1uF 10V EN B1 R2 30k GND +15V C2 B1 FB C2 2.2uF 25V R1 536k GND TPS61046 VB_ENABLE GND C2 2.2uF 25V R1 536k B2 SW GND VOUT C1 +15V C2 GND VOUT R2 GND D1 +2.5Vboost to +5.5V converter including required Figure 5: TPS61046 passive components 30k L2 C3 10uF 10V 4.7uH C4 1uF 10V U2 C3 +2.5V GND to +5.5V GND AMP_ENABLE GAIN C3 10uF 10V C4 1uF 10V C6 B2 U2 AUDIO_IN GND C2 C3 1uF GND6.3V AMP_ENABLE C2 C9 1uF B2 6.3V GAIN C6 GND AUDIO_IN 1uF 6.3V A3 B3 GND VDD SW L2 SHDN_N 4.7uH GAIN A3 IN+ VDD B3 INSHDN_N GAIN LM48580 IN+ IN- VBST VAMP OUT+D2 SW D2 D1 GND D1 C1 C7 A1 B1 OUTD1 A2 VBST SGNDC1 D3 VAMP PGND OUT+ OUTSGND PGND C9 1uF 6.3V C5 1uF 25V A1 +15V C5 1uF 25V 25V 10uF R3 100K MEMS positive pole GND C8 10uF +15V 25V GND B1 C7 C8 A2 D3 25V 10uF MEMS negative pole R4 100K R3 100K GNDMEMS positive pole MEMS negative pole 10uF 25V R4 100K LM48580 GND GND GND Figure 6: LM48580 amplifier, including required passiveTitle components LM48580 and TPS61046 Size A4 Document Name Ganymede_Amp.SchDoc Date 14.01.2021 1 2 Rev 1.0.0 Sheet 1 of 1 3 Title LM48580 and TPS61046 Size A4 Document Name Ganymede_Amp.SchDoc 7 2 Adap UT-P2023 | Date Datasheet Sheet of 14.01.2021 Rev 1.0.0 1 Released in February 2021, 3 updated in May 2021 USound GmbH | www.usound.com | sales@usound.com 1 ACOUSTIC PERFORMANCE ACOUSTIC PERFORMANCE IN BAFFLE (IEC 60268-5) 90 SPL10cm [dB] 80 70 60 50 40 1000 2000 3000 4000 5000 6000 7000 8000 Frequency [Hz] 10000 20000 30000 40000 20000 30000 40000 Figure 7: SPL @ 15 VP drive* 50 40 THD [%] 30 20 10 0 1000 2000 3000 4000 5000 6000 7000 8000 Frequency [Hz] 10000 Figure 8: THD 60 dB SPL @ 4 kHz, corresponds to 5 VP *Red lines in figure 7 indicate the limits. Test limits are used to establish incoming inspection acceptance/ rejection criteria, correlation of test equipment with USound is also a requirement for elimination of equipment and test method variation. 8 Adap UT-P2023 | Datasheet Released in February 2021, updated in May 2021 USound GmbH | www.usound.com | sales@usound.com GROUP DELAY 1 Group Delay [ms] 0,8 0,6 0,4 0,2 0 1000 2000 3000 4000 5000 6000 7000 8000 Frequency [Hz] 10000 20000 30000 40000 Figure 9: Group delay; sampling frequency 96 kHz. Time delay between speaker and microphone compensated. IMPULSE RESPONSE 0,04 Impulse Response [Pa/V] 0,02 0 -0,02 -0,04 -0,2 0 0,2 0,4 0,6 0,8 1 1,2 Time [ms] 1,4 1,6 1,8 2 2,2 2,4 Figure 10: Impulse response; sampling frequency 96 kHz. Time delay between speaker and microphone compensated. 9 Adap UT-P2023 | Datasheet Released in February 2021, updated in May 2021 USound GmbH | www.usound.com | sales@usound.com ACOUSTIC PERFORMANCE USING THE CARME UJ-R1020/UJ-R1030 TEST BOX IN FREE FIELD The speaker test box ‘Carme’ is available to analyse the performance of Adap UT-P2023 MEMS speakers. With a back volume of 100 mm³, Carme provides the necessary sealing to avoid an acoustic short circuit and offers a convenient way to connect Adap UT-P2023 to USound’s amplifiers. Two versions of Carme are available: „ Carme UJ-R1020 has the proper electrical connection to combine it with the linear Amplifier Amalthea UA-R3010 „ Carme UJ-R1030 has the proper electrical connection to combine it with the USound’s evaluation board Helike UA-E3010 To set up the Carme test box, unscrew and separate the PCB from the shell. Remove the housing gasket and place the MEMS speaker inside the box with the contact side up. Place the PCB by taking care to match the orientation marks with those on the speaker. Tighten the screws for proper sealing. Using the Carme test box, Adap UT-P2023 MEMS speakers can be measured in free field. Figure 11: Carme UJ-R1020 for Amalthea UA-R3010. The colour coding matches the outputs of Amalthea UA-R3010 Figure 12: Carme UJ-R1030 for Helike UA-E3010 90 Reference adapter in baffle Carme-box in free field 80 SPL10cm [dB] 70 60 50 40 1000 2000 3000 4000 5000 6000 8000 Frequency [Hz] 10000 20000 30000 40000 Figure 13: Adap UT-P2023 SPL measurement in the Carme UJ-R1020/UJ-R1030 test box (10 cm) in free field 10 Adap UT-P2023 | Datasheet Released in February 2021, updated in May 2021 USound GmbH | www.usound.com | sales@usound.com HANDLING GENERAL It needs to be considered that MEMS devices consist of silicon structures and therefore, they should be handled with care. Any bending of the MEMS speakers must be avoided while handling during the assembly process and when permanently inside an application, otherwise the speaker can be damaged. TWEEZERS It is recommended to gently grip the speakers from the sides with blunt curved tweezers and avoid touching the membrane under any circumstances to preserve its functionality and form. Using sharp tweezers while manipulating the speakers can lead to accidentally piercing the membrane and to a loss of functionality. The risk to damage the speaker can be further minimized if the speaker is handled with the membrane facing down, as shown in the picture below. Figure 14: Left: Recommended tweezer type. Right: Not recommended tweezer type 11 Adap UT-P2023 | Datasheet Released in February 2021, updated in May 2021 USound GmbH | www.usound.com | sales@usound.com INTEGRATION It needs to be considered that MEMS devices consist of silicon structures and therefore, they should be handled with care. Any bending of the MEMS speakers must be avoided while handling during the assembly process and when permanently inside an application, otherwise the speaker can be damaged. To avoid bending of the speaker, it’s recommended that just the defined contact areas are in contact with the application at front side and back side of the speaker. Contact area 0,81 0,89 Contact area 0,81 0,89 Figure 15: Recommended contact surfaces at the front side (left) and back side (right) of MEMS speaker 12 Adap UT-P2023 | Datasheet Released in February 2021, updated in May 2021 USound GmbH | www.usound.com | sales@usound.com SPEAKER GASKETS In most applications the speakers need to be sealed to deliver the proper performance. This can be attained by various means, gaskets being the most prominent. USound offers two standard gaskets optimized for different applications. Both designs have the same footprint as the speaker and an opening similar to the cover opening. Name UG-P201G UG-P202G Description Open cell foam gasket with a glue layer on one side. Closed cell foam gasket with a glue layer on each side. Material Poron 4701-50-30020-04 & TESA 4983 TESA 75635 Thickness uncompressed (compressed for proper sealing) 0.53 mm (0.30 mm) 0.35 mm (0.35 mm) Application Suitable for prototyping recommendations The speaker needs to be pushed on the gasket in order to be sealed, some mechanical tolerance can be absorbed. Main application is prototyping and evaluation, where the speaker can be exchanged. 3 2 0.03 3 DETAIL B SCALE 20 : 1 F F E E E SECTION A-A SCALE 10 : 1 SECTION A-A SCALE 10 : 1 D A 4.70 ±0.10 2.50 ±0.10 4.70 ±0.10 R1D A C 2.50 ±0.10 D A A C 4.50 ±0.10 6.70 ±0.10 4.50 ±0.10 6.70 ±0.10 *Delivery on carrier sheets (matrix distribution). *Delivery on carrier sheets (matrix distribution). B 1 Do not scale the drawing. Unless otherwise specified, tolerancces in accordance with DIN ISO 2768 and dimensions in millimeters. 4 3 USound GmbH Kratkystrasse 2 8020 Graz, AUSTRIA www.usound.com B ID: 0000001850 DRW DATE REV DETAILS 1 IIR 05/05/2020 INT. REF: GTGE_0401prai PROJECT: GANYMEDE 4701-50-30020-04 + MATERIAL: Poron Tesa4983 Adap UT-P2023 | Datasheet (die cut) PURPOSE: Manufacturing Do not scale the drawing. Unless CONFIDENTIAL Property of USound A REV DETAILS CONFIDENTIAL Property of USound 13 B B 09/03/2020 2 D R1 C C IIR 1 F B DRW DATE 2 Adhesive Foam 0.50 Main application is mass production where the speaker is mounted permanently. Disassembly will not be possible. 4 1 F E The speaker does not need to be pressed against the gasket; sticking it to the gasket during assembly is enough. 0.35 4 Drawings Suitable for mass production USound GmbH ID: 0000003812 INT. REF: GTGE_0405tsag PROJECT: GANYMEDE MATERIAL: Tesa 75635 PURPOSE: Manufacturing (die cut) Atolerancces in A otherwise Kratkystrasse Released inspecified, February 2021, updated in2 May 2021 8020 Graz, AUSTRIA accordance with DIN ISO 2768 www.usound.com and dimensions in SHEET 1/1 | millimeters. USound GmbH www.usound.com | sales@usound.com 4 1 3 2 SHEET 1/1 1 A CONNECTIVITY + The speaker is driven by applying voltage between the + and the - connection. The potential of + has to be always equal or higher than the -. To ensure this a DC voltage together with the AC signal has to be applied on +. Attention: The AC peak voltage must always be smaller than or equal to the DC voltage. The membrane will move downwards/inside by applying a positive voltage on the + connection. _ Figure 16: Electrical connections of the speaker back side Each speaker is equipped with an 8 x 18 digital matrix code (DMC). „ DMC Size: 3.6 mm x 1.6 mm 3.60 ±0.03 DMC format: 8x18. Pixel size 0.2mm LABELLING „ Pixel size: 0.2 mm „ Data format corresponds to the production date: NNYCCDSSSS. For example: 0191024022 1.60 ±0.03 Figure 17: DMC at speaker backside 02 NN Speaker type (01 = Adap UT-P2023; 02= Achelous UT-P2020) 14 9 Y 10 2 4022 CC D SSSS Week day (First day starts on Sunday) Serial number Year Calendar week (Last digit of the year) Adap UT-P2023 | Datasheet Released in February 2021, updated in May 2021 USound GmbH | www.usound.com | sales@usound.com PACKAGING Thickness: 0.5 mm QTY 150 PCS 82,26 7 ESD FOAM SUPPORT SIZE: 325 X 138 X 13 136 ±0,8 68 ±0,8 161 ±0,8 322 ±0,8 10,90 85 150 X 5 = 750 PCS plus 1 x empty top tray 158 342 200 750 X 9 = 6750 PCS 40 0 600 Figure 18: Packaging in tray and carton 15 Adap UT-P2023 | Datasheet Released in February 2021, updated in May 2021 USound GmbH | www.usound.com | sales@usound.com IMPORTANT NOTICE AND DISCLAIMER USound GmbH (“USound”) makes no warranties for the use of USound products, other than those expressly contained in USound’s applicable General Terms of Sale, located at www.usound.com. USound assumes no responsibility for any errors which may have crept into this document, reserves the right to change devices or specifications detailed herein at any time without notice, and does not make any commitment to update the information contained herein. No license to patents or other intellectual property rights of USound are granted in connection with the sale of USound products, neither expressly nor implicitly. In respect of the intended use of USound products by the customer, the customer is solely responsible for observing existing patents and other intellectual property rights of third parties and for obtaining, as the case may be, the necessary licenses. For more information about USound patents visit https://www.usound.com/patents/. Important note: The use of USound products as components in medical devices and/or medical applications, including but not limited to, safety and life supporting systems, where malfunctions of such USound products might result in damage to and/or injury or death of persons is expressly prohibited, as USound products are neither destined nor qualified for use as components in such medical devices and/or medical applications. The prohibited use of USound products in such medical devices and/or medical applications is exclusively at the risk of the customer. 16 Adap UT-P2023 | Datasheet Released in February 2021, updated in May 2021 USound GmbH | www.usound.com | sales@usound.com