Arrow Electronics Australia

Arrow Electronics Australia
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Voltage-controlled variable gain amplifiers

NATIONAL Semiconductor, represented by Arrow , has announced three new variable gain amplifiers (VGA) designed as higher-performance substitutes for the company's Comlinear (CLC) line of amplifiers.

These products are suitable for use in applications such as professional and consumer video equipment, high-speed digital subscriber line (DSL) modems and cellular base stations, displays, as well as instrumentation, test and medical systems.

Utilising the VIP10 process technology, National has developed a high-speed, power-efficient, good performance amplifier.

The new LMH6502/6503/6504 wideband, voltage-controlled variable gain amplifiers allow high-frequency large signals (slew rate >1500V/µs) and can also drive heavy load currents (75mA).

Additionally, the amplifiers provide accurate device-to-device gain matching (less than ±0.7dB) and an attenuation range of >70dB, making them suitable for automatic gain control applications in the communication, industrial and video markets.

Pin-for-pin replacements for the CLC520/522/5523, the LMH6502/6503 consumes approximately 300mW with a speed of 130MHz, and the LMH6504 consumes 100mW with a speed of 150MHz.

The LMH6502/6503 accepts a differential input and the LMH6504 is single-ended. While the gain control is linear in dB for a large portion of the total gain range for the LMH6502 and LMH6504, the LMH6503 is linear in V/V.

National's new amplifiers are based upon the VIP10 process. The VIP10 is a high speed, dielectrically isolated, complementary bipolar IC process that utilises deep trench technology on a bonded wafer for complete dielectric isolation and optimal high-speed amplifier performance.

Arrow Electronics Australia News

Quad-output power management units (25-Sep-2006)
NATIONAL Semiconductor, represented by Arrow Electronics, has introduced two new, integrated power management units (PMUs) to its family of designer-friendly, easy-to-use PMUs.

Maxim Integrated Products introduces new MAX8688 (24-Aug-2006)
Maxim Integrated Products has introduced its new MAX8688, the first chip to convert an all-analog power supply to a fully programmable, digital power-management solution.

1.5MHz PWM buck controller (9-Aug-2006)
NATIONAL Semiconductor has introduced a new pulse-width modulation (PWM) buck controller that employs National’s unique emulated-current-mode (ECM) architecture for output voltages with extremely low duty cycles at frequencies up to 1.5MHz.

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