1W Standard Linear Audio Amplifier from STMicroelectronics Offers Ultra-low Standby Current; Flip-chip Variant Reduces Space Requirements to the Size of the Die.Business Editors GENEVA--(BUSINESS WIRE)--June 14, 2002 STMicroelectronics (NYSE NYSE See: New York Stock Exchange : STM (Scanning Tunneling Microscope) A microscope that can image down to the atomic level. An STM uses a piezoelectric tube with a tiny sharp tip at the end that is moved within nanometers of the object being sampled. ) has introduced three 1W audio amplifier ICs offering low power consumption, ultra-low quiescent current draw when shut down and stability at unity gain. The parts are offered in small packages including one variant in a die-sized flip-chip mounting. Key applications for the family include use in mobile phones, laptops, PDAs and other portable audio devices. The TS4871, TS4872 and TS4890 audio power amplifiers each deliver 1W of continuous RMS output power into an 8(OMEGA) load at 5V, with a 75dB power supply rejection ratio In electronics, Power supply rejection ratio or PSRR is a term widely used in op-amp datasheets; used to describe the amount of noise from a power supply that the particular op-amp can reject. References (measured at 217Hz). Distortion is 0.05% for the TS4872 and 0.1% for the TS4890 and TS4871. The parts also offer rail-to-rail operation on the output of the TS4890 and TS4871, and on the input and output of the TS4872. Power consumption for the new family of amplifiers is small. The operating voltage for the parts runs from 5.5V down to 2.2V. An external pin can be used to control the standby mode A sleep mode in a portable computer that provides an almost immediate resumption of operation when turned back on. In standby mode, the hard disk and display are turned off, and the CPU is throttled down to its lowest-power state. , which reduces the supply current to less than 10nA. An internal thermal shutdown protection is also provided. External gain-setting resistors can configure the unity-gain stable amplifier. The parts are available in miniature SO-8 and SO-8 packages for the TS4890 and TS4871 and as an eight-bump flip-chip for the TS4872. Operating temperature range is -40(degree)C to +85(degree)C. About STMicroelectronics STMicroelectronics, the world's third largest semiconductor company, is a global leader in developing and delivering semiconductor solutions across the spectrum of microelectronics applications. An unrivalled combination of silicon and system expertise, manufacturing strength, Intellectual Property (IP) portfolio and strategic partners positions the Company at the forefront of System-on-Chip (SoC) technology and its products play a key role in enabling today's convergence markets. The Company's shares are traded on the New York Stock Exchange New York Stock Exchange (NYSE) World's largest marketplace for securities. The exchange began as an informal meeting of 24 men in 1792 on what is now Wall Street in New York City. , on Euronext Paris Euronext Paris is France's securities market, formerly known as the Paris Bourse, which merged with the Amsterdam and Brussels exchanges in September 2000 to form Euronext NV, which is the second largest exchange in Europe behind the London Stock Exchange. and on the Milan Stock Exchange Milan Stock Exchange The largest regional stock exchange in Italy, facilitating more than 90% of the country's trading volume. . In 2001, the Company's net revenues were $6.36 billion and net earnings were $257.1 million. Further information on ST can be found at www.st.com. |
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