STMicroelectronics Enables Even More Interactive Portables with New Microphone Interface Chip

- Complete microphone interface on a miniature chip supports diverse audio-enabled applications

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2010-07-19 10:02

서울--(뉴스와이어)--As demand continues to grow for smaller dimensions and extra functions in mobile devices such as smartphones and other portable devices, a new integrated circuit (IC) from STMicroelectronics (NYSE: STM), a world leader in protection and filtering devices, reduces the total space required to embed microphones for a variety of functions.

Consumer-electronic applications requiring a microphone are increasing, as users expect to use their PCs for voice calls, use voice commands to control devices such as GPS receivers and automotive systems, and record audio directly onto portable media devices. In addition, mobile devices such as cellphones that have traditionally featured one microphone are now adding extra microphones to support active noise cancellation for improved user experience.

Although demand for embedded microphones is increasing, little extra space – if any – is available inside the enclosure. Designers need solutions that make the microphone smaller and allow the essential interface circuitry to be mounted on the printed circuit board. ST’s EMIF02-MIC07F3 is a next-generation device integrating the complete noise filtering, ESD (electrostatic discharge) protection and biasing for one microphone in a single IC occupying only 1.37mm2. The single chip replaces multiple discrete components that consume at least 20.8mm2.

The EMIF02-MIC07F3 also enhances performance by using ST’s advanced PZT (Lead Zirconium Titanate) process, which allows high capacitance values within ultra-miniature dimensions. This gives designers extra freedom to optimize the filter characteristics. In addition, as all of the interface components are fabricated on a single chip, close matching between the capacitor and resistor values produces more repeatable performance than is possible with discrete components. This enhances the quality of the end product.

Major features of the EMIF02-MIC07F3:
· 1.17 x 1.17mm ST IPAD™ (Integrated Passive and Active Devices) package
· IEC 61000-4-2 Level 4 ESD protection
· High capacitance-density PZT technology: 45nF per mm²
· Single-chip solution enables:
 Simplified design
 Faster time to market
 Enhanced reliability
 Efficient supply-chain management

Samples of the EMIF02-MIC07F3 are available now, in 8-bump lead-free flip-chip IPAD package. The device will be priced at $0.25 in quantities of 5000. Additional pricing options are available for larger quantities.

About STMicroelectronics
STMicroelectronics is a global leader serving customers across the spectrum of electronics applications with innovative semiconductor solutions. ST aims to be the undisputed leader in multimedia convergence and power applications leveraging its vast array of technologies, design expertise and combination of intellectual property portfolio, strategic partnerships and manufacturing strength. In 2009, the Company’s net revenues were $8.51 billion. Further information on ST can be found at www.st.com.

IPAD is a trademark of STMicroelectronics.

ST마이크로일렉트로닉스 개요
ST마이크로일렉트로닉스는 혁신적인 반도체 솔루션을 다양한 전자 애플리케이션 분야의 고객들에게 제공하고 있는 세계적인 선도업체이다. ST는 자사의 방대한 기술, 설계 전문기술 및 IP 포트폴리오 통합, 전략적 협력업체와 강력한 제조시설 등을 활용하여 멀티미디어 컨버전스 및 전력 애플리케이션 분야에서 명실상부한 선도업체가 되는 것을 목표로 하고 있다. ST의 2010년도 매출은 103억 5,000만 달러이다. ST에 대한 보다 상세한 정보는 www.st.com를 참조하라.

웹사이트: http://www.st.com