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| ST introduced a new combo chip filtering and ESD protection |
| A global leader in consumer electronics, semiconductor suppliers STMicroelectronics introduced a new combo chip filtering and ESD protection, new products can filter out high frequency noise generated by mobile phones, portable music players and make feature phones more excellent output quality .
The new device STMicroelectronics is ideal for growing sales of music phones. Market research firm iSuppli predicts that by 2010, annual sales of music phones will be more than 1 billion units, accounting for over 90% of the overall mobile phone market share. The new device can also protect other portable music players, to prevent electromagnetic interference generated by nearby cell phone.
The new device EMIF04-EAR02M8 size of 1.5 x 1.7mm, can replace the music player headphones discrete devices connected to the circuit network or two separate IC, printed circuit board area savings up to 72 %. This product is for developers to implement new features provide greater freedom. New products in the 900MHz to 1900MHz band excellent signal attenuation can be used for all mobile communication standards , as well as multi- band mobile phone, without having to spend a very long time to fine-tune each individually designed .
Currently on the market there are several similar single product , but only STMicroelectronics filtering and protection IC provides separate headphone and microphone connection optimization circuit , because both applications require different filter characteristics . STMicroelectronics product design is to protect the existing microphone interface devices EMIF02-MIC03M6 and speaker interface protection devices EMIF02-SPK02F2 integrated in a single device . Low resistance earphone circuitry (0.3Ω) is a feature of the new product to extend mobile phone battery life , low resistivity helps to improve driving efficiency speakers.
In addition to highly integrated and optimized filtering functions, STMicroelectronics This new IC also provides the necessary electrostatic discharge (ESD) protection to prevent electrostatic discharge damage to the phone’s internal components . When connecting the signal direct contact , ESD protection devices reach new peak voltage 30kV, the effect is higher than passive ESD protection devices.
EMIF04-EAR02M8 tiny QFN 8 -pin package. | | |  |
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