2403 260 00031 RA 8 x 12 x 2 RECEIVER Page 1 of 20 ©2011 Knowles Electronics 2403 260 00031 Contents 1. Theory of operation............................................................................................................................. 3 2. Mechanical Layout and Dimensions.................................................................................................... 4 2.1. Main Dimensions .........................................................................................................................4 2.2. PWB Layout .................................................................................................................................5 2.3. Pick and place layout ...................................................................................................................5 2.4. Spring Force .................................................................................................................................6 2.5. Part Marking/Labeling .................................................................................................................7 2.6. Force on component ...................................................................................................................8 2.7. Material List .................................................................................................................................9 3. Electrical and Acoustical Specifications............................................................................................. 10 3.1. Frequency response ..................................................................................................................10 3.2. Electro-Acoustic Parameters .....................................................................................................11 3.3. Power handling..........................................................................................................................11 3.4. Measurement setup ..................................................................................................................12 3.5. Measured Parameters ...............................................................................................................12 3.6. Measurement adapter ..............................................................................................................13 4. Environmental Conditions ................................................................................................................. 14 4.1. Storage.......................................................................................................................................14 4.2. Transportation ...........................................................................................................................14 4.3. Functionality ..............................................................................................................................14 5. Environmental tests .......................................................................................................................... 15 5.1. Qualification tests......................................................................................................................15 5.2. Reliability tests ..........................................................................................................................15 5.3. Sample Size, Sequence ..............................................................................................................15 5.4. Period of Shelf-Life ....................................................................................................................15 5.5. Testing Procedures ....................................................................................................................15 6. Related Documents ........................................................................................................................... 19 7. Change History .................................................................................................................................. 20 8. Disclaimer .......................................................................................................................................... 20 Release – Revision: H Page 2 of 20 ©2011 Knowles Electronics 2403 260 00031 1. Theory of operation RA x 8 x 12 x 2 Receiver is a high end micro size receiver specifically designed for mobile phone and other applications where high quality sound is needed and only very little space for components is available. Release – Revision: H Page 3 of 20 ©2011 Knowles Electronics 2403 260 00031 2. Mechanical Layout and Dimensions 2.1. Main Dimensions Release – Revision: H Page 4 of 20 ©2011 Knowles Electronics 2403 260 00031 2.2. PWB Layout 2.3. Pick and place layout positive voltage on pin + moves membrane in direction of arrow Release – Revision: H Page 5 of 20 ©2011 Knowles Electronics 2403 260 00031 2.4. Spring Force Release – Revision: H Page 6 of 20 ©2011 Knowles Electronics 2403 260 00031 2.5. Part Marking/Labeling The samples have a serial number on bottom (pot) side Release – Revision: H Page 7 of 20 ©2011 Knowles Electronics 2403 260 00031 2.6. Force on component FORCES ON DIFFERENT STATE OF COMPONENT STATE FROM FRONT TO BACK (Basket) FROM SIDE 1 TO SIDE 1 FROM SIDE 2 TO SIDE 2 POT MEMBRANE PULL OF FORCE (COVER/BASKET) Release – Revision: H MIN. SURFACE OF PREASURE [mm²] 3 10 - Page 8 of 20 MAX PERMANENT FORCE [N] 10 10 10 0 0 0 MAX HANDLING FORCE [N] 15 15 15 3 0 5 ©2011 Knowles Electronics 2403 260 00031 2.7. Material List 1. Material of basket: Polycarbonate 2. Material of membrane: Polyarylate-Compound 3. Material of pot: soft magnetic Iron 4. Material of magnet: Nd Fe B 5. Material of contact CrNi-Steel, gold plated 6. Material of cover: CrNi-Steel 7. Dimensions: 12x8x2.0mm 8. Mass: 0.55g Release – Revision: H Page 9 of 20 ©2011 Knowles Electronics 2403 260 00031 3. Electrical and Acoustical Specifications 3.1. Frequency response 100 50 95 45 90 40 85 35 80 30 75 25 70 20 65 15 60 10 55 5 50 100 1000 THD [%] SPL [dB rel 20uPa] Typical frequency response measured on baffle according to chapter 3.4 (distance d = 1cm, p= 5mW, without back cavity) 0 100000 10000 f f [Hz] 100 300 400 500 1000 3000 6000 7000 8000 10000 Release – Revision: H lower limit [dB SPL] 61 85 -82 82 87 72 72 Tolerance window upper limit [dB SPL] 78 92 92 88 88 97 97 87 Page 10 of 20 f [Hz] 300 400 600 6300 upper limit [%THD] 40 20 5 5 ©2011 Knowles Electronics 2403 260 00031 3.2. Electro-Acoustic Parameters Loudspeaker mounted in adapter acc. to 3.6. 1. Rated impedance Z: 32Ω 2. Voice coil resistance R: 28.8Ω±10% 3. Resonance frequency (measured @5mW) f0: 350Hz±15% p-p: 0.34mm p-p 4. Maximum usable excursion xmax 5. Nominal characteristic sensitivity (calculated for 1W in 1m) average from 1kHz to 3kHz 68±2dB 5.1. Measured characteristic sensitivity (at 5mW in 1cm) average from 1kHz to 3kHz 85±2dB 6. THD according chapter 3.1. 7. Rub & buzz < 60dBSPL (300Hz -1500Hz) in 1cm at 5mW (400mVeff) All acoustic measurements at 23±2°C 3.3. Power handling Receiver mounted in lifetime test device (open rear/open front) (pink noise shaped according to diagram below, crest factor 2) 1. Max short term power (1sec. ON / 3sec. OFF) 75mW (RMS) 2. Max continuous power (500h) 40mW (RMS) Spectrum of life time test signal 10 0 dBrel -10 -20 -30 -40 -50 100 1000 10000 Frequenz [Hz] Release – Revision: H Page 11 of 20 ©2011 Knowles Electronics 2403 260 00031 3.4. Measurement setup IEC BAFFLE Rq,including wiring <0,3Ω freefield microphone 1/4“ power amplifier analyzer ≈ d 3.5. Measured Parameters 3.5.1. Sensitivity SPL is expressed in dB rel 20µPa, computed according to IEC 268-5. Measurement set up and parameters according chapter 3.4. This test is performed for 100% of products in the production line. 3.5.2. Frequency response Frequency response is measured according test set up in chapter 3.4 data sheet and checked against the tolerance window defined in chapter 3.1. This Test is performed for 100% of products in the production line. 3.5.3. Total harmonic distortion (THD) Is measured according IEC 268-5 (2nd to 5th harmonics) and test set up in chapter 3.4. This test is performed for 100% of products in the production line. 3.5.4. Rub& Buzz Rub & Buzz will be measured in the Inline-measuring device with a sinusoidal sweep. Rub & Buzz is defined as the maximum level of no harmonic energy, expressed as signal to non-harmonic content ratio, in a certain frequency-range. Signal and evaluation criteria are according to chapter 3.2. This test is performed for 100% of products in the production line. Release – Revision: H Page 12 of 20 ©2011 Knowles Electronics 2403 260 00031 3.6. Measurement adapter Release – Revision: H Page 13 of 20 ©2011 Knowles Electronics 2403 260 00031 4. Environmental Conditions 4.1. Storage The transducer fulfils the specified data after treatment according to the conditions of ETS 300 019-2-1 Specification of environmental test: Storage Test spec. T 1.2: Weather protected, not temperature controlled storage locations. 4.2. Transportation The transducer fulfils the specified data after treatment according to the conditions of ETS 300 019-2-2 Specification of environmental test: Transportation Test Spec. T 2.3: Public Transportation 4.3. Functionality The transducer fulfils the specified data after treatment according to the conditions of ETS 300 019-2-5 ETS 300 019-2-7 Release – Revision: H Specification of environmental test: Ground vehicle installations Test spec. T 5.1: Protected installation Specification of environmental test: Portable and non-stationary use Test spec. T 7.3E: Partly weather protected and non-weather protected locations. Page 14 of 20 ©2011 Knowles Electronics 2403 260 00031 5. Environmental tests 5.1. Qualification tests According to our milestone plan (Product Creation Process), a complete qualification test will be done at design validation of products manufactured under serial conditions. 1x per year and product family a requalification takes place. The qualification process covers all tests described under 5.5 and a complete inspection. 5.2. Reliability tests 1x per month and product family samples are taken and submitted to tests described under 5.5.2 5.3. Sample Size, Sequence Unless otherwise stated 20 arbitrary new samples will be used to perform each test for both, qualification and requalification test as described under 5.1 and 5.2. 5.4. Period of Shelf-Life The period of shelf-life is 2 years. 5.5. Testing Procedures 5.5.1. Storage Tests 5.5.1.1. Low Temperature Storage Test Parameter Test Method and Conditions Duration Evaluation Standard Low Temperature Storage -40°C 168h Measurements after 2 hours recovery time. (Ref. EN 60068-2-1) rel. humidity not controlled All samples fully operable. All acoustical parameters according specification with tolerances increased by 50 %. 5.5.1.2. High Temperature Storage Test Parameter Test Method and Conditions Duration Evaluation Standard Dry Heat Storage +85°C 168h (Ref. EN 60068-2-2) rel. humidity not controlled Measurements after 2 hours recovery time. All samples fully operable. All acoustical parameters according specification with tolerances increased by 50 %. Release – Revision: H Page 15 of 20 ©2011 Knowles Electronics 2403 260 00031 5.5.1.3. Temperature Cycle Test Parameter Test Method and Conditions Duration Evaluation Standard Change of Temperature -40°C/+85°C 5 cycles (Ref. EN 60068-2-14) Transition time <3 min. See Figure 5-1 below >2h for each temperature Measurements after 2 hours recovery time. All samples fully operable. All acoustical parameters according specification with tolerances increased by 50 %. +85°C -40°C 2h 3m 2h 3m 2h 3m 2h 3m 2h 3m 2h 3m 2h 3m 2h 3m 2h 3m 2h 3m Figure 5-1: Temperature Cycle Test 5.5.1.4. Temperature / Humidity Cycle Test Parameter Test Method and Conditions Duration Evaluation Standard Damp heat, cyclic +25°C/+55°C 6 cycles. (Ref. IEC 60068-2-30) 90% to 95% RH. 24h at each temperature Measurements after 2 hours recovery time. Temp. change time <3h See Figure 5-2 below All samples fully operable. All acoustical parameters according specification with tolerances increased by 50 %. Caution: no condensed water on products! +55°C +25°C 9h 3h 9h 3h 9h 3h 9h 3h 9h 3h 9h 3h 9h 3h 9h 3h 9h 3h 9h 3h 9h 3h 9h 3h Figure 5-2: Temperature / Relative Humidity Cycle Test Release – Revision: H Page 16 of 20 ©2011 Knowles Electronics 2403 260 00031 5.5.2. Operating Tests 5.5.2.1. Cold Operation Test Parameter Test Method and Conditions Duration Evaluation Standard Cold Operation Test -20°C 72h (Ref. EN 60068-2-1) rel. humidity not controlled Measurements after 2 hours recovery time. All samples fully operable. THD may be increased after test. All other acoustical parameters according specification with tolerances increased by 50 %. signal acc. Chapter Error! Reference source not found. 5.5.2.2. Dry Heat Operation Test Parameter Test Method and Conditions Duration Evaluation Standard Dry Heat Operation +70°C 500h (Ref. EN 60068-2-2) rel. humidity not controlled Measurements after 2 hours recovery time. All samples fully operable. The allowable change in sensitivity shall not be greater than 3 dB. All other acoustical parameters according specification with tolerances increased by 50 %. signal acc. Chapter Error! Reference source not found. 5.5.3. Salt Mist Test Parameter Test Method and Conditions Duration Evaluation Standard Salt Mist The part must be subjected to 2 hours spray of 5% NaCl salt mist, at 35°C then be left at 40°C and 95% RH for 22h. 3 cycles The samples shall be washed after the test with distilled water and dried at T< 50°C. (Ref. IEC60068-2-52, Kb / Severity 2 Release – Revision: H Component may have reduced performance, but must still function properly. The allowable sensitivity difference shall not be greater than ±3dB from initial sensitivity. Page 17 of 20 ©2011 Knowles Electronics 2403 260 00031 5.5.4. Shock Resistance Test (Free Fall Test) - unprotected product Parameter Test Method and Conditions Conditions / Sample size Evaluation Standard Mechanical shock Drop of sample without fixation of release plane from a height of 1.5m onto concrete floor. Each 3 shocks in both directions of the 3 axes. Component may have reduced performance, but must still function properly. The allowable sensitivity difference shall not be greater than ±3dB from initial sensitivity. (Ref. IEC60068-2-32 Ed), Procedure 1 (18 drops in total) 5.5.5. Impact Durability Test (Tumble Test) – protected product Parameter Test Method and Conditions Conditions / Sample size Evaluation Standard Impact durability (in a Tumble Tester) Speaker in drop test box or representative mechanics. Random drops on steel base. 30 units 180 drops, 1m Component may have reduced performance, but must still function properly. The allowable sensitivity difference shall not be greater than ±3 dB from initial sensitivity. (Ref. IEC60068-2-32 Ed) DUT power off (SPR a7.1.1) 5.5.6. Resistance to Electrostatic Discharge Parameter Test Method and Conditions Conditions / Sample size Evaluation Standard Resistance to ESD One pole is grounded and the ESD pulse is applied to the other pole. The speaker must be stressed first with one polarisation and then with the other polarisation. DUT must be discharged between each ESD exposure. 10 exposures on each polarity / 5 units All samples fully operable. IEC61000-4-2 Level 4 (SPR c 2.5.1) DUT Power off All acoustical parameters according specification with tolerances increased by 50%. Level 4: contact +/- 8kV, air +/- 15kV Release – Revision: H Page 18 of 20 ©2011 Knowles Electronics 2403 260 00031 6. Related Documents IEC 268-5 IEC 68-2 EN 60068-2 ISO 2859 - 1 ISO 3951 ETS 300 019-2-1 ETS 300 019-2-2 ETS 300 019-2-5 ETS 300 019-2-7 Release – Revision: H Sound System equipment Part 5: Loudspeaker Environmental testing Environmental testing Sampling procedures for inspection by attributes Part 1: Sampling plans indexed by acceptable quality level (AQL) for lot-by-lot inspection Sampling procedures and charts for inspection by variables for percent defectives. Specification of environmental test: Storage Test spec. T 1.2: Weather protected, not temperature controlled storage locations Specification of environmental test: Transportation Test spec. T 2.3: Public Transportation Specification of environmental test: Ground vehicle installations Test spec. T 5.1: Protected installation Specification of environmental test: Portable and non-stationary use Test spec. T 7.3E: Partly weather protected and non-weather protected locations Page 19 of 20 ©2011 Knowles Electronics 2403 260 00031 7. Change History Status Version Date ECR Comment / Changes Initials of owner Obsolete A 15.06.07 2197 Part marking/spring force diagram/pwb layout ML/AH Obsolete B 23.01.08 2113 Handling force pot FL/AH Obsolete C 20.02.08 2115 Part marking FL/AH Obsolete D 09.02.09 2389 Change permanent force/add dimension (rib height) FL/AS Obsolete E 06.10.09 2568 Change height and tolerance of receiver FL Obsolete F 13.11.09 2632 Change pick and place layout FL Obsolete G 30.03.10 2802 Update legal disclaimer/logo CP Obsolete H 23.03.11 3118 Migration NXP to Knowles template CP Release I 07.11.11 3201 Update environmental section CP 8. Disclaimer Stresses above the Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only. The device may not function when operated at these or any other conditions beyond those indicated under “Electrical and Acoustical Specifications”. Exposure beyond those indicated under “Electrical and Acoustical Specifications” for extended periods may affect device reliability. This product is not qualified for use in automotive applications Frequency range in telecom application: 300 Hz – 3,4 kHz The information contained in this literature is based on our experience to date and is believed to be reliable and it is subject to change without notice. It is intended as a guide for use by persons having technical skill at their own discretion and risk. We do not guarantee favorable results or assume any liability in connection with its use. Dimensions contained herein are for reference purposes only. For specific dimensional requirements consult factory. This publication is not to be taken as a license to operate under, or recommendation to infringe any exiting patents. This supersedes and voids all previous literature. Release – Revision: H Page 20 of 20 ©2011 Knowles Electronics