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The fully matched ALM-38140 wideband variable attenuator module from Avago Technology suits use in a wide range of broadband system applications. This 50-MHz to 4-GHz PIN diode attenuator module is a fully integrated solution that uses Avago’s low-distortion silicon PIN diodes.

The Avago ALM-38140 is a PIN variable attenuator designed for wireless broadband infrastructure products. It operates over the 50-MHz to 4-GHz range and measures 3.8 by 3.8 mm.

The module is housed in a miniature 3.8- by 3.8- by 1.0-mm multiple chip-on-board (MCOB) package with six-pin configuration pads (see the figure). According to the company, it suits use in wireless infrastructure applications such as CATV, WCDMA, VSAT, WiMAX, and cellular basestations.

Designed with broadband input and output matching circuits, the ALM-38140 doesn’t require any external matching component. Also, designers can easily enhance narrow-band performance by applying a single external inductor. The module features high power-handling capabilities (P1dB > 30 dBm at 1900 MHz), great linearity performance (IIP3 of 60 dBm at 1900 MHz), and superior dynamic range (35 dB at 1900 MHz).

With broadband coverage, this ALM-38140 is ideal for use in automatic gain control (AGC) and temperature-compensation circuitry applications in the 50- to 4000-MHz frequency range. It costs $1.85 each in 10,000-piece quantities. Samples and production quantities are available now.