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STMicroelectronics Embraces New RF Front-End Standard


Geneva, April 2, 2013 ĖThe STHVDAC-304MF3 antenna-tuning controller has a 4-channel output for adjusting up to four tunable BST capacitors in the antenna-matching circuits of multi-band GSM/WCDMA/3G-LTE smartphones. A key feature is support for the MIPI Alliance RF Front End (RFFE), an emerging industry standard that simplifies cellular radio design.

The STHVDAC-304MF3 is controlled via an RFFE-compliant 1.8V interface, and comprises a High-Voltage Digital-Analog Converter (HVDAC) for generating capacitor-tuning voltages from 2V to 20V. Features include a trigger mode for coordinating signals, and a shutdown mode allowing longer battery life. This new device joins STís 3-channel STHVDAC-303, which has a standard SPI host connection.

The device is in production in a 0.4mm-pitch, 0.6mm-high, chip-scale package. Pricing is from $0.50 for orders over 1,000 units. Samples are available immediately.

Product datasheet and short video on STís STHVDAC-304MF3 antenna-tuning circuit are available at

For further information on STís smart-antenna tuning products please go to

About STMicroelectronics
ST is a global leader in the semiconductor market serving customers across the spectrum of sense and power and automotive products and embedded processing solutions. From energy management and savings to trust and data security, from healthcare and wellness to smart consumer devices, in the home, car and office, at work and at play, ST is found everywhere microelectronics make a positive and innovative contribution to peopleís life. By getting more from technology to get more from life, ST stands for life.augmented.

In 2012, the Companyís net revenues were $8.49 billion. Further information on ST can be found at


 MIPI Alliance RFFE
 BST capacitor
 smart antenna

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