4-A Chips Charge Smart-Phone Li-Ion Batteries
MD&D News Staff
Trumpeted as the first monolithic, 4-A Li-ion battery charger ICs, Summit Microelectronics’ configurable SMB349 and SMB359 operate from a 3.6-V to 16-V input range...
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DSPs Make Residential And Enterprise Femtos A Snap
Texas Instruments is certainly making it easier than ever to offer a femtocell unit for 2G/3G and even 4G systems using GSM, CDMA, WCDMA, TD-SCDMA, WiMAX, and LTE thanks to its latest DSP family. The TMS320TCI6485 and TMS320TCI6489 both serve as the baseband component of a femtocell....
Monolithic 40-V Battery Chargers Decrease Power Dissipation
Designed for single-cell Li-ion/polymer batteries, the LT3650-4.1 and LT3650-4.2 monolithic, high-voltage battery chargers from Linear Technology Corp. come in a 9-mm² package. Their switch-mode architecture decreases power dissipation and uses little board space, according to Linear....
Femtocell SoC Makes 16-User Access Points Practical
The Percello PRC6500 SoC is a fully integrated digital baseband chip for UMTS 3G applications. It will deliver high-speed packet access using HSPA+ with data rates of 21.6 Mbits/s downlink and 5.7 Mbits/s uplink while supporting 16 users. It also complies with 3GPP HNB specifications....
Ku Band Antenna For Trains Maintains Broadband Connections At 300 km/h
The StarRail antenna system from Starling Advanced Communications enables wireless systems at speeds up to 300 km/h. It covers the full Ku band from 10.7 to 14.5 GHz. ...
Low-Power 802.11n Chips Implement 4-by-4 MIMO
I don’t normally think of Qualcomm as a Wi-Fi chip provider. The company’s strength is clearly 3G CDMA cellular radios and related products. However, its new WCN1320 and WCN1312 802.11n chips have leaped to the forefront of Wi-Fi products....
Wireless Chip Solves The RF “Front-End Problem”
How do you cram all the circuits that connect the antenna and the RF/baseband chip into a tiny package? RF Axis offers a solution in its RFX2401, which connects directly to the single-chip wireless transceiver via a bandpass filter....
65-nm Mobile WiMAX SoC Boosts Processing Power
The SQN1220 Mobile WiMAX system-on-a-chip (SoC) from Sequans Communications eliminates the need for an external CPU or DSP in voice/data customer premise equipment (CPE) and gateways. It also provides a high level of processing power to support combination voice and data applications, according to the company....
Fifth-Generation PAs Extend Talk Time
Avago Technologies has announced five new members of its CoolPAM power-amplifier (PA) family for UMTS band handsets and datacard applications. The devices in the ACPM-73x2 series are based on the company’s fifth-generation CoolPAM circuit technology, which provides one of the longest talk times among existing PAs with very low quiescent current at about 3 mA, according to Avago. ...
WiMAX 4G Power Amp Supports Mobile Subscriber Products
Optimized for mobile WiMAX applications, the AWM6433 power amplifier from Anadigics delivers exceptional linearity and efficiency across all output power levels. This PA helps ensure outstanding mobile performance in USB dongles, data cards, smart phones, and notebooks that address the growing WiMAX market....
HSPA+ Femtocell SoC Supports Eight-User Operation
The picoXcell PC312 HSPA+ femtocell SoC from picoChip supports eight users with simultaneous voice and data services. It also offers 64QAM and 3GPP Release 7 features for high-speed communication...
Mobile I/O Expander And QWERTY Keypad Controller Extends Battery Life
The ADP5588 mobile I/O expander and QWERTY keypad controller from Analog Devices provides ambient light sensing for smart portable devices that require a large keypad matrix and expanded I/O lines. It also integrates keypad scanning, de-bouncing, and interrupt generation, resulting in reduced processor I/Os and loading....
Dual-Winding Inductors Target GPS And Other Handheld Devices
The HM78D series of surface-mount dual-winding inductors from BI Technologies suits GPS systems and other battery-operated handheld devices. Available in a rugged-cost-efficient package with excellent current-handling characteristics, according to the company, these inductors also can be used as a common-mode choke or as a dc-dc converter....
Router Enables High-Bandwidth Applications In Harsh Environments
The third-generation Digi Connect WAN 3G IA router from Digi International provides secure primary and backup connectivity to remote devices in severe environments. It supports industrial protocols and features high-speed 3G connectivity enabling high-bandwidth applications like remote video surveillance in harsh environments....
Low-Frequency Quadrature Modulator Extends Transmitter Performance
The LTC5598 direct-conversion quadrature modulator from Linear Technology Corp. offers superior linearity performance and low noise to enhance the dynamic range performance of basestation transmitters, according to the company, with +27.7-dBm OIP3 and +74-dBm OIP2....
Application Processor Provides Full HD Video Recording/Playback Support
The SH-MobileHD1 application processor (SH73730) from Renesas Technology America delivers low-power Full High-Definition (1920 by 1080 pixels) video recording, playback, and streaming support for next-generation Internet Protocol video applications in mobile devices. ...
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