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RFIC Channel

Linear introduces ideal diode bridge controller that minimizes power loss and heat

Linear Technology Corp. introduces the LT4321, an ideal diode bridge controller that replaces two diode bridge rectifiers with low-loss N-channel MOSFET bridges to increase the available power and reduce heat dissipation in a Power over Ethernet Powered Device (PoE PD). IEEE 802.3 PoE specifications require PDs to accept DC supply voltages of any polarity over their Ethernet inputs.


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Linear introduces 42 V, 4 A (IOUT), synchronous step-down silent switcher

Linear Technology Corp. announces the LT8614, a 4 A, 42 V input capable synchronous step-down switching regulator. A unique Silent Switcher™ architecture reduces EMI/EMC emissions by more than 20 dB, well below the CISPR 25 Class 5 limit. Even with switching frequencies in excess of 2 MHz, synchronous rectification delivers efficiency as high as 96% while Burst Mode® operation keeps quiescent current under 2.5 µA in no-load standby conditions.


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TriQuint expands CATV portfolio with infrastructure hybrids and GaN amplifiers

TriQuint Semiconductor Inc., a leading RF solutions supplier and technology innovator, has released the first two members of its cost-effective TriAccess™ hybrid-packaged power doubler family. These CATV infrastructure devices are the first to utilize proprietary on-die linearization for best-in-class performance including excellent gain and low distortion. TriQuint is also announcing full production of two new GaN monolithic microwave integrated circuit (MMIC) power doublers for CATV infrastructure.


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Qualcomm edges Broadcom to ABI Research's GNSS IC vendor competitive assessment

ABI Research’s GNSS IC vendor matrix concluded that, overall, Qualcomm is the leading GPS IC vendor, followed by Broadcom in second place, and CSR in third. The vendor matrix compares companies on 15 criteria across the broader categories of GNSS Innovation and Implementation. Qualcomm’s domination of cellular GPS IC shipments courtesy of its embedded platform strategy, coupled with its strong IZat and Gimbal platforms means it is well placed to remain at the top in 2013/14.


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Skyworks introduces linear PAs for LTE and WCDMA applications

Skyworks Solutions Inc. introduces four linear power amplifiers for LTE and WCDMA applications. The fully matched surface mount SKY66001-11 (2110 to 2170 MHz), SKY66002-11 (1900 to 2025 MHz), SKY66005-11 (850 to 920 MHz) and SKY66008-11 (900 to 990 MHz) modules meet the stringent spectral linearity requirements of femtocell applications with high power-added efficiency. An integrated directional coupler eliminates the need for any external coupler.


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