CM-28452-000 Knowles Acoustics, CM-28452-000 Datasheet
CM-28452-000
Specifications of CM-28452-000
Related parts for CM-28452-000
CM-28452-000 Summary of contents
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... Acoustic Interface Design Guide MEMS MICROPHONES ECMs SPECIALTY MICROPHONES SPECIALTY SPEAKERS CUSTOM ASSEMBLIES ACOUSTIC SOFTWARE MICROPHONE AND SPEAKER BASICS ...
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... Discover 2 your next acoustic interface solution. Knowles Acoustics offers you a full spectrum of MEMS microphones, electret condenser microphones, specialty microphones, balanced armature speakers, custom assemblies, and sound conditioning software. This application guide will help you select the right acoustic interface solution. Knowles reserves the right to change designs and specifications without prior notice. Should a safety concern arise regarding this product, please contact us immediately for technical consultation ...
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... It all starts with your application starts with an idea you may have. For support from concept to design to sub-assembly, or any step along the way, just call us. Or visit us at www.knowles.com Table of Contents MICROPHONES - MEMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5 MICROPHONES - ECMs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8 SPECIALTY TRANSDUCERS - MICROPHONES . . . . . . . . . . . . . . . . 9-14 ACCELEROMETERS & DAMPERS . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 SPECIALTY TRANSDUCERS - SPEAKERS . . . . . . . . . . . . . . . . . . 15-23 CUSTOM ASSEMBLIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 ACOUSTIC SOFTWARE ...
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MICROPHONES – MEMS SiSonic ™ MEMS Microphones The SiSonic ™ MEMS microphone series is entering its fourth generation of development, with product shipments exceeding 400 million units to date. The proven and evolving design series continues to support high-performance, high-density ...
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Ultra Mini Package - 3.76 x 2.95 x 1.10 (mm) • New Ultra Mini with footprint of 11mm • Flexible designs available with/without RF filtering and built in amplifier • Ideal for miniature consumer electronics ...
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... MICROPHONES – ECMs Electret Condenser Microphones Electret Condenser Microphones (ECM) are for general use in all electronic products requiring a microphone. ECMs provide good acoustic performance and reliability under non-severe environmental conditions. • Highly efficient electrical specifications • Industry standard sizes • ...
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... Part Number Sensitivity (db) Filter MD9745APA-1 -41.0±3 10pF MD9745APZ-F -42.0±2 None 9.7x4.5 FREQUENCY RESPONSE 10k FREQUENCY (Hz) www.knowles.com MICROPHONES – ECMs Filter Termination Solder Type Solder Type Solder Type Pin Type PCB, Bullseye Solder Type Solder Type 6x1.5 FREQUENCY RESPONSE -10 -20 - ...
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... MICROPHONES – ECMs Uni-Directional – 3 mm, 6 mm, 9.7 mm Size (mm) 3x1.5 6x2.2 6x2.7 6x5.2 9.7x5 3x1.5 FREQUENCY RESPONSE 0˚ -10 -20 - 100 1k FREQUENCY (Hz) Noise Canceling – 4 mm, 6 mm, 9.7 mm Size (mm) 4x1.5 6x2.2 9.7x5.2 4x1.5 FREQUENCY RESPONSE 20 Near 6mm 10 0 -10 Far 50cm -20 - 100 1k FREQUENCY (Hz) Value Added Microphone Assemblies Knowles Acoustics has over 60 years experience with precision assembly for demanding applications ...
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... Specialty Transducer Microphones The Specialty Transducer (ST) product line consists of miniature microphones, speakers, and assemblies. Hundreds of design possibilities can be applied to your product challenge with our high-performance microphone designs. Ideal for new product ideas that require premium audio and very small form factors, solutions include noise canceling, omni-directional and unidirectional performance. Other variables include size, shape, amplifi ...
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SPECIALTY TRANSDUCERS – Microphones EK/EL SERIES – Microphone Omnidirectional (EK), Unidirectional (EL) 4.00 x 5.59 x 2.28 (mm) EK omnidirectional microphones provide a unique combination of size, performance and value. Its high electroacoustic sensitivity and low noise make this microphone ...
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BJ SERIES – Microphone Omnidirectional, Noise Canceling 7.92 x 5.70 x 4.14 (mm) Knowles’ Magnetic Microphones (BJ Series) are based on balanced armature technology and are self-shielded against external magnetic fields. The microphones offer high efficiency, stability, and reliability and ...
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SPECIALTY TRANSDUCERS – Microphones WP SERIES – Waterproof Microphone Omnidirectional, Noise Canceling 4.00 x 5.59 x 2.28 (mm) Knowles’ waterproof microphones survive immersion in water. The WP Series’ form factor is a very small size with low vibration sensitivity. The ...
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FB SERIES – Boom Microphone FB Series are available in metallic, flexible boom styles, which utilize a wide array of microphone elements, giving superb noise rejection and high-frequency crossover of near and far field responses. FB’s are utilized in a ...
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SPECIALTY TRANSDUCERS – Accelerometers & Dampers BU SERIES – Accelerometer 7.87 x 5.54 (mm) BU Series Accelerometers are frequently used as contact microphones for radio communications in high noise environments such as firefighting or combat. The accelerometers reproduce voice signals ...
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... Knowles sub-miniature speaker designs are based on balanced armature technology and are utilized in a variety of high performance audio and communication products. Knowles balanced armature speakers are available in several sizes and efficiencies, which can be finely tuned to meet your specific performance requirements. They are designed for use in in-ear applications, including earphones and communication earpieces sub-assembled by Knowles for premium consumer electronics accessories ...
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... FH SERIES – Balanced Armature Speaker 5.09 x 2.80 x 2.59 (mm) The FH speaker represents an unprecedented combination of ultra-compact size and high SPL output with efficiencies normally found only in much larger speakers. The FH speaker line brings true high-gain, high-output performance to earphone designs. • Undamped, screen damped, internally damped, and Ferrofluid damped responses • ...
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... SPL) HC-23761-000 101 – Balanced Armature Speaker 5.18 x 3.55 x 3.00 (mm) FC SERIES FC Series speakers may be used for small radio communication earphones where ED size does meet package requirements. Rounded corners make it slightly smaller compared to EH Series speakers. • Available in High-Output HC speaker version • ...
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... SPECIALTY TRANSDUCERS – Speakers EH SERIES – Balanced Armature Speaker 5.19 x 3.55 x 3.00 (mm) EH Series speakers are approximately 2/3 the size of ED speakers and may be used for small radio communication earphones where ED size does not meet package requirements. • Balanced-armature, magnetic technology to give high efficiency, stability and reliability • ...
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... Balanced Armature Speaker 6.32 x 4.31 x 2.97 (mm) ED SERIES One of Knowles’ most versatile and most popular speakers, its compact size and appreciable output power make the ED speaker suitable for a variety of instruments. • Undamped, screen damped, internally damped, and Ferrofluid damped responses • ...
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... SPECIALTY TRANSDUCERS – Speakers EC SERIES – Balanced Armature Speaker 7.57 x 4.31 x 3.67 (mm) EC Series speakers are commonly used in isolating earphones for radio communication. • Similar SPL output to the BK Series • Rounded corners on the face opposite the terminal pad • 34% smaller volume than the BK Series ...
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... High-quality sound output • Tailored bandwidth for superb speech intelligibility Sensitivity @ 1kHz (dB SPL) CM-23152-000 103 CM-23299-000 103 CM-28421-000 103 CM-28431-000 103 CM-28452-000 103 SPECIALTY TRANSDUCERS – Speakers Impedance @ 500Hz Max SPL @ 500Hz Port Location (Ohms) (dB SPL) 12S 285 12S 2320 12S 60 ...
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... At 8.8mm diameter, the SR is the first round balanced armature speaker in the marketplace. SR offers output equivalent to the BK series and maximizes bass performance. • Round package facilitates earphone designs • Drop-in upgrade for moving coil dynamic speakers • Designed for high volume production • Balanced armature technology Sensitivity @ 1kHz ...
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... Can function as a microphone or beeper • Various impedances • Face and edge port locations available Sensitivity @ 1kHz (dB SPL) CB-22849-000 73 CB-22850-000 73 CB-23817-000 83 SPECIALTY TRANSDUCERS – Speakers Impedance @ 500Hz Max SPL @ 500Hz Port Location (Ohms) (dB SPL) Face 21 Impedance @ 500Hz Max SPL @ 500Hz Port Location (Ohms) (dB SPL) Edge ...
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... Knowles Acoustics. COMPLETE SOLUTION Knowles Acoustics Finished Goods program offers reduced time to market at an ultimately reduced total manufacturing cost of acoustic product ownership. Support in design, application, assembly and testing are all elements included in our services. Off-the-shelf designs are also available. Design Support • ...
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INTELLISONIC ™ The intelligibility and use of mobile communications are often impeded by the impact of noise from the immediate environment. IntelliSonic is a software-based speech enhancement technology that when coupled with Knowles’ microphones, reduces the effects of reverberation, directionally ...
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MICROPHONE AND SPEAKER BASICS MICROPHONE AND SPEAKER BASICS MICROPHONES Microphones measure sound pressure. Inside a Knowles microphone is a thin flexible diaphragm, an electrically charged plate, and an amplifier (Fig. 1). The output voltage is proportional to changes in the ...
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... SPEAKERS The speaker converts an electrical signal into sound. A cross section of a typical Knowles speaker is shown in Fig. 3. The basic components of the speaker are: a coil of wire, a metal U-shaped reed called the armature, a pair of permanent magnets, a drive rod, and a diaphragm. The coil and armature act as an electromagnet. An alternating current in the coil causes the polarity of the armature to switch back and forth from north to south ...
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... Knowles North & South America World Headquarters Manufacturing Sales & Application Engineering Knowles Acoustics maintains sales, marketing, engineering and manufacturing globally. For immediate assistance on your specific requirements, please call the nearest facility listed below. AMERICAS: EUROPE: Knowles Acoustics Knowles Acoustics ...