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Precision Amplifier Offers 20 fA Guaranteed Input Bias Current

March 18, 2008 10:58 am | Product Releases | Comments

National Semiconductor introduced the LMP7721 precision amplifier 20 fA guaranteed input bias current at room temperature and over the extended temperature range of -40°C to 125°C. According to the company, the device yields maximum system sensitivity and accuracy from photodiode and high-impedance sensors and is suited for improving sensitivity and accuracy in battery operated portable applications

LISTED UNDER: ICs

Charge Pump Drives up to Six LEDs

March 16, 2008 1:49 pm | Product Releases | Comments

Catalyst Semiconductor, Inc. introduced the CAT3637 fractional charge pump LED drivers which address the requirements for high-efficiency and easy LED programming in portable devices. It is optimized for applications with one bank of five or six identical LED channels, a typical configuration for larger LED screen portable products. It incorporates a simplified version of the company’s 1-wire EZDim interface, which supports 16 output power levels, from from zero to 30 mA full brightness

LISTED UNDER: ICs

Intermediate-bus Power Controllers are Highly Integrated

March 14, 2008 12:40 pm | Product Releases | Comments

Presented as the first such single-chip devices on the market to integrate high-voltage (75-V) half-bridge MOSFET drivers with a 1.6-A peak current driving capability, the Vishay Siliconix SiP11205 and SiP11206 controllers are designed to work on the primary side of an isolated half-bridge intermediate-bus converter in telecom and network equipment and in 1/16-brick or 1/8-brick power modules. Providing current monitoring and control features, the self-driven synchronous-rectification controllers step down voltages with greater than 95 % efficiency with an input voltage range from 36V to 75V

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Reference Designs Create Low-Power Wireless Modules

March 14, 2008 6:17 am | Product Releases | Comments

Providing engineers the ability to create Ultra-Low Power (ULP) ISM-band button-cell powered wireless links, a family of reference designs using Nordic Semiconductor RF tranceiver chips require only a digital In/Out, power (+V) and ground (GND) connection for implementation. The seven module designs are based on the 2.4GHz nRF24L01 (RF Digital Modules RFD21010, RFD21676, RFD21677), nRF2401 (RFD21006), and nRF24E1 (RFD21018) and the 433/868/915MHz nRF905 (RFD21002), and nRF9E5 (RFD21014).

LISTED UNDER: ICs

PWM Buck Regulators Feature Unique Auto-Tracking and Sequencing Capabilities

March 10, 2008 7:42 am | On Semiconductor | Product Releases | Comments

ON Semiconductor introduced the NCP312x family of dual output pulse width modulation (PWM) buck regulators that offer auto-tracking and sequencing capabilities. Featuring integrated MOSFETs that provide 2A (NCP3120, NCP3122) or 3A (NCP3121, NCP3123) output current with switching frequency up to 2.2 MHz, the devices are appropriate for a

LISTED UNDER: ICs

Optocouplers Handle From -55°C to +100°C

March 7, 2008 10:23 am | Product Releases | Comments

Offering flexibility and board-space savings in low-current DC control circuits and AC power loads up to 380V, the EL30XX family of 6-pin DIP random-phase and zero-cross triac driver optocouplers provide an operating temperature range from -55°C to +100°C. Available in 21 varieties with peak blocking voltages from 250V to 800V and low-trigger currents of 5 mA, 10 mA, and 15 mA, the zero-cross versions of the triac driver optocouplers provide

LISTED UNDER: ICs

SiC MESFETs Rival Silicon, GaAs Devices

March 6, 2008 4:40 am | Product Releases | Comments

Optimized for applications such as wideband MIL/Aero and defense communications, Class A and A/B amplifiers, and wireless broadband applications, Cree’s 48V silicon carbide (SiC) RF MESFETs have desirable properties compared to silicon or gallium arsenide, including higher breakdown voltage, higher saturated electron drift velocity, and higher thermal conductivity. The 10W CRF24010 has a 15dB gain and junction-to-case thermal resistance of

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Single-Chip Front End Advances Low-Power Residential Gateways

March 5, 2008 6:39 am | Product Releases | Comments

Enabling the creation of improved low-power multi-mode VDSL2/ADSL2+ triple play residential gateways, the Ikanos Communications FXS60IF1single-chip Integrated Front End (IFE) integrates the xDSL line driver to reduce external components and power consumption compared to existing solutions. The device provides VDSL2 performance while meeting the DSL Forum’s stringent ADSL2+ and ADSL performance specifications (TR-100 and TR-067 respectively).

LISTED UNDER: ICs
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Digital Power Controller Configures On The Fly

March 5, 2008 4:56 am | Analog Devices, Inc. | Product Releases | Comments

Intended for use in ac/dc and isolated dc/dc power circuits serving high-reliability apps such as server, storage, and telecomm systems, the ADP1043 digital PWM power control and management device allows engineers to monitor and configure system parameters using a graphic interface for power functions such as frequency, timing, voltage setting, and protection limits. Communicating in real time via I2C bus,

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2.4 GHz RF Transceiver for ZigBee/IEEE 802.15.4 and Proprietary Low-Power Wireless Applications

March 4, 2008 6:57 am | Product Releases | Comments

Texas Instruments introduced a second-generation ZigBee/IEEE 802.15.4 radio-frequency (RF) transceiver designed for the 2.4 GHz unlicensed ISM frequency band. Featuring desirable selectivity/co-existence and link budget, the CC2520 targets a variety of ZigBee/IEEE 802.15.4 and proprietary wireless systems used in

LISTED UNDER: ICs

Chipscale USB Power Manager Includes 1A Regulator

March 4, 2008 6:10 am | Product Releases | Comments

Able to manage multiple input sources such as a wall adapter or USB port and the Lithium battery while preferentially providing power to the system load, the LTC3566 from Linear Technology targets power management in Li-Ion/Polymer battery applications. The 4mm2 QFN-packaged device accepts an input of up to 5.5 V (7V transient) and integrates a switching PowerPath manager, a stand-alone battery charger, a 1A high efficiency synchronous buck-boost regulator, an ideal diode and controller

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Power Management IC Delivers Low Power Loss with Low EMI

February 28, 2008 4:08 am | International Rectifier | Product Releases | Comments

International Rectifier introduced the iP2005A. The device is optimized for very low EMI, eliminating the need for external snubber circuits in EMI-sensitive designs such as consumer game consoles. By eliminating external snubbers, it reduces per phase power loss by up to 2.3W compared to the previous generation device that required an external resistor and capacitor snubber with values of

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Precision Amplifiers with Low Voltage Offset Drift Over Temperature

February 25, 2008 9:01 am | Product Releases | Comments

National Semiconductor Corp. introduced a family of micropower precision amplifiers that provide guaranteed maximum offset voltage drift over temperature (TCVOS) as low as ±0.4 microvolts per degree Celsius (uV/°C). The LMP2231 single, LMP2232 dual and LMP2234 quad micropower op amps feature CMOS inputs, 1.6V to 5.5V operation, 10 uA of supply current per channel, low offset voltage of 150 uV and a wide temperature range of -40°C to 125°C.

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MCUs Operate Down To 0.9V Enable Portables to Derive Power from a Single-cell Battery

February 25, 2008 8:48 am | Product Releases | Comments

Silicon Laboratories introduced microcontrollers (MCUs) capable of operating down to 0.9V, enabling  portable devices to derive power from a single-cell battery. The C8051F9xx family’s 8-bit architecture with an integrated high-efficiency DC/DC boost converter, which can supply up to 65 mW of power for both internal MCU use and to drive other components, creates a

LISTED UNDER: ICs

Digital Power Controllers Integrate Active, Accurate Current Sharing

February 25, 2008 7:56 am | Product Releases | Comments

Zilker Labs introduced adaptive DC DC power controllers for maximizing efficiency in power constrained applications. The ZL2006 and ZL2004 –additions to the company’s Digital DC product family – ­include new proprietary algorithms that dynamically optimize efficiency as operating conditions change, with no

LISTED UNDER: ICs

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