STMicroelectronics Unlocks Further Eco-Design, Cost and Audio Enhancements for Home Multimedia Equipment

- Integrated headphone/line-out amplifier cuts power consumption, enhances listening experience, simplifies design

뉴스 제공

2010-12-09 11:17

SEOUL--(뉴스와이어)--Tomorrow’s home audio-video equipment and set-top boxes that feature the TS4604 stereo audio amplifier from STMicroelectronics (NYSE: STM), a leading supplier of ICs for consumer electronics, will combine several audio improvements contributing to enhanced ownership experience.

The TS4604 integrates a 100mW stereo headphone output and a driver for the audio Line Out connection of LCD and plasma televisions, set-top boxes, PVRs, Blu-ray players, and PC-audio products such as sound cards. Its low operating power and dedicated shutdown control per function help meet eco-design objectives. In addition, self muting enhances listeners’ experiences by preventing audible pop and click noises when external factors cause the supply voltage to dip.

Equipment designs can also be simplified, delivering cost savings, because the TS4604 integrates charge-pump circuitry supplying negative voltage to the amplifiers. Hence only a single 3.0V to 4.8V external power supply is needed to sustain the amplifier’s output signal, which can be up to 2Vrms at the line driver output. There is also no need for a high-voltage power supply for the Line Out circuitry. DC blocking capacitors are also eliminated, saving cost and PCB (printed-circuit-board) space.

Main features of the TS4604:
·100mW stereo headphone output into a 16 Ohm load with 1% THD+N
·2Vrms stereo line-driver output voltage at all supply voltages
·5mA quiescent current for both functions
·1uA shutdown current; 30ms wake-up
·90dB Power Supply Rejection Ratio (PSRR) on headset and line driver outputs

The TS4604IPT is in production now, in a halogen-free 28-pin TSSOP package, priced at $0.75 in quantities of 1000. Alternative pricing options are available for larger quantities.

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