Circuits

Buck/Boost Converter suits camera flash LEDs.

Buck/Boost Converter suits camera flash LEDs.

With less than 1 Â-µA standby current, Model STCF02 delivers controlled current to single, high-power white LED used for flash illumination in mobile imaging equipment. Device uses PWM control scheme with switching frequency of 1.8 MHz and provides regulated output voltage from 2.5-5.3 V, powered from single Li-Ion battery. Three logic-input signals allow selection of 4 different operating...

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Battery Chargers automatically select USB or AC inputs.

Battery Chargers automatically select USB or AC inputs.

Standalone, dual-input LTC4076 and LTC4077 charge single-cell Li-Ion batteries from wall adapter or USB power sources. They use constant-current/constant-voltage algorithm for charging, with charge current programmable up to 950 mA from wall adapter supply or 650 mA from USB supply, while auto-sensing presence of voltage at each input. Model LTC4076 features programmable C/x charge current...

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Battery Charger IC does not require microcontroller.

Battery Charger IC does not require microcontroller.

With input voltages from 4.5-34 V, LTC4011 charges 1- to 16-cell NiMH/NiCd batteries at rates up to 4 A. Features include 550 kHz synchronous PWM current source controller, -dV and/or dT/dt fast charge termination, NiMH top-off charge, and operating temperature range of 0-85Â-

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System-on-Chip facilitates wireless networking.

Based on CC2420 ZigBee(TM) radio transceiver, Series CC2430 combines radio, programmable microcontroller, flash memory, and both IEEE 802.15.4 and ZigBee(TM) software, all on single silicon die. Three different models offer 32, 64, and 128 kByte flash configurations, each with 8 kBytes of RAM. Units are based on SmartRFÂ-®03 platform in 0.18 Â-µm CMOS and are available in 7-7 mm 48-pin...

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Windowed Watchdog IC draws 35 -µA quiescent current.

Manufactured in 8-pin SO8 package, EM6151 integrated microprocessor voltage supervisory IC has programmable reset threshold voltages and watchdog timer with programmable time window and system enable output. Different versions are offered for different ratios of opened/closed window of watchdog and power saving function compatible with CAN-bus sleep mode. Along with open drain reset output,...

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MOSFET Drivers provide high-resolution imaging.

Quad MOSFET Driver ICs, Models MD1810 and MD1811, drive N- and P-channel MOSFETs in applications that require high output current for capacitive load. Both feature 6 ns rise and fall time with 1,000 pF load for use in high frequency ultrasound imaging applications. Low jitter design ensures accurate Doppler measurement and clear imaging. Housed in 16-lead QFN package, drivers are Green and RoHS...

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COFDM Demodulator IC optimizes DVB-T reception quality.

Offered in QFN48 package with 7 x 7 mm footprint, Model DRX 3977D enables error-free reception in fringe areas or when using Single Frequency Networks. It includes IF amplifier and PLL that can reuse tuner clock without performance degradation. Unit exceeds, with several dB of margin, NorDig-Unified Specification v1.0.2. Small package size makes it suited for PC cards, ExpressCard(TM) designs,...

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Microcontroller delivers voice-enabled solution.

General-purpose RSC-464 IC provides speech recognition, synthesis, and system control on one chip. Inside speech recognition SoC includes 16-bit ADC, DAC, digital filter unit, math unit, 4K RAM, 64K ROM, output amplification, timers, and comparators. Also able to be used as slave for speech recognition, voice biometrics, and speech and music playback, product implements FluentChip(TM) v2.0...

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Altera and TI partner to deliver compliant programmable PCI Express solution.

SAN JOSE, Calif., Aug. 8 -- Altera Corporation (NASDAQ:ALTR) and Texas Instruments Incorporated (TI) (NYSE:TXN) today announced a partnership to develop a PCI-SIG compliant, low-cost PCI Express solution using Altera's Cyclone(TM) II FPGAs and the latest generation TI x1 physical layer (PHY) chip. The partnership addresses the need for a programmable, low-cost, fully compliant reference design...

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Serial Flash Memory stores code, data, and parameters.

Serial Flash Memory stores code, data, and parameters.

Supporting Intel 82573E PCI Express Gigabit Ethernet Controller, 8-Mbit Model M25PE80 provides 16 sectors of memory space, each containing 256 pages. Each page is 256 bytes wide, and all sectors and pages can be erased independently. Operating from 2.7 3.6 V, unit encompasses standard SPI bus with clock speed of 50 MHz for data transfer, and features 1 Â-µA deep power-down mode....

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