Circuits

Circuits

Broadcom Selected for Wi-Fi CERTIFIED(TM) Wi-Fi Direct(TM) Test Suite and Among the First to Obtain Certification

Enables Revolutionary Device to Device Connections Anywhere, Anytime - With or Without a Traditional Network Available IRVINE, Calif., Oct. 25 --Broadcom Corporation (Nasdaq: BRCM), a global leader in semiconductors for wired and wireless communications, today announced that the Broadcom® BCM43224 dual-band 802.11n 2x2 MIMO PCIe half mini card has been selected for the Wi-Fi CERTIFIED Wi-Fi...

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Step-Down DC/DC Controller offers differential output sensing.
DC to DC Power Supplies (Converters)

Step-Down DC/DC Controller offers differential output sensing.

Available in 3 x 4 mm QFN-20 or TSSOP-20E packages with input range of 4.5-38 V, Model LTC3833 features controlled on-time, valley current-mode architecture that forces fast transient response by increasing operating frequency during transient event. Onboard N-channel MOSFET gate drivers allow use of external MOSFETs for load currents up to 25 A in applications with output voltages from 0.6-5.5...

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Step-Down DC/DC Controller drives 5 V logic level MOSFETs.
DC to DC Power Supplies (Converters)

Step-Down DC/DC Controller drives 5 V logic level MOSFETs.

Featuring input voltage of 2.7-5.5 V or 4-38 V, Model LTC3852 includes onboard charge pump that provides 5 V bias to drive low RDS(ON) and standard logic-level power MOSFETs from 3.3 V nominal supply. Output currents up to 25 A can be supplied over output voltage range from 0.8 V to 99% of VIN, making controller suited for 3.3 V-powered point-of-load applications. Constant-frequency current-mode...

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Circuits

Three-Phase Driver IC suits fan and blower applications.

Worcester, MA - Allegro MicroSystems, Inc. announces a new three-phase, sensorless, brushless DC motor driver IC to complement their existing family of brushless DC devices. Allegro's new A4941 offers sensorless commutation, a wide supply voltage range, 1.25 A peak output current, -40°C to 105°C operating temperature range, lock detection with auto restart, and a small eTSSOP package with soft...

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Audio Hub enables HD audio in portable multimedia applications.
Signal Processors

Audio Hub enables HD audio in portable multimedia applications.

Housed in 72-ball W-CSP, multi-channel Model WM8958 provides 100 dB SNR during digital-to-analog playback. Audio enhancement DSP runs multiband compressor, enabling loud, clear sound from small speakers without causing overload or damage. Integrated stereo Class D/AB speaker driver and Class W headphone driver minimize power consumption during playback, while active ground loop noise rejection...

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Semiconductors

Samsung Selects RFMD to Support Galaxy Tab(TM) Android(TM) Tablet

RFMD's Highly Integrated WiFi Components Combine Small Footprint With Superior Performance Greensboro, NC, October 13, 2010 - RF Micro Devices, Inc. (Nasdaq GS: RFMD), a global leader in the design and manufacture of high-performance radio frequency components and compound semiconductor technologies, today announced that Samsung has selected three highly integrated RFMD-® components to deliver...

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Synchronous Step-Down DC/DC Controller draw as little as 50 µA.
DC to DC Power Supplies (Converters)

Synchronous Step-Down DC/DC Controller draw as little as 50 µA.

Supplied in 20-pin 3 x 4 mm QFN and 20-lead TSSOP, LTC3891 operates from 4-60 V input supply range that protects against high-voltage transients and continues operation during automotive cold crank. Output voltage can be set from 0.8-24 V at output currents up to 20 A with efficiencies as high as 95%. Operating with selectable fixed frequency from 50-900 kHz, IC is synchronizable to external...

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Circuits

Broadband Demodulator combines 5 devices, 3 RF functions.

Combining 5 devices and 3 RF functions in one SMT chip, ADRF6850 operates over 100-1,000 MHz range and supports narrow and wideband signal modes up to 250 MHz. It conserves board space and simplifies development by integrating 60 dB variable gain amplifier, fractional-N PLL synthesizer with VCO, and 2 baseband ADC drivers in 8 x 8 mm LFCSP package. RF performance is optimized with input IP3 of...

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Computer Processors

A/V Integrated Circuits enhance PMP video capabilities.

Utilizing triple core architecture, Series 27 enables portable media player (PMP) applications to offer an advanced mobile entertainment to consumers by strengthening video playback, A/V quality, and battery life. Series is equipped with 32-bit CPU, full spec 720P (1,280 x 720 pixel) video decoder, and simulated 3D GPU. In addition to video decoding for diverse video formats, solutions support...

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Modulators

IQ Modulator offers continuous tuning range of 300-4,800 MHz.

Integrating direct up-conversion IQ modulator with PLL and wideband VCO, Model TRF372017 achieves OIP3 of 26 dBm, delivering high linearity to meet spectral mask standards for wireless infrastructure applications. Local oscillator synthesizer output with independent frequency dividers drives additional transmit or receive signal chains. Housed in 7 x 7 mm QFN-48 package, modulator provides low...

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