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400- To 2700-MHz Digital Controlled Variable Gain Amplifiers

Source: RFMD

400- To 2700-MHz Digital Controlled Variable Gain Amplifiers
Two models of digitally controlled variable gain amplifiers operating in the 400- to 2700-MHz range are available from RFMD. They both featured power-up programming, 12-bit SPI serial control programming, single +5V supply, a gain control range of 31.5dB, dual channel VGA, full internal matching and no external bias inductors. Two 6-bit digital step attenuators, and 50dBc channel isolation. These amplifiers can be used in cellular, 3G infrastructure, WiBro, WiMax, LTE, Microwave Radio, and High Linearity Power Control applications.

RFDA0047

RFMD's RFDA0047 is a dual channel digital controlled variable gain amplifier featuring high linearity over the entire gain control range with noise figure less than 6.5dB in its maximum gain state. The gains of two 6-bit digital step attenuators are programmed with a serial mode control interface (SPI). The RFDA0047 is packaged in a small 7.0mm x 7.0mm leadless laminate MCM, which contains plated through thermal vias for ultra-low thermal resistance. This module is easy to use with no external matching components required.

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Datasheet: RFDA0047 Digital Controlled Variable Gain Amplifier


RFDA0057

RFMD's RFDA0057 is a dual-channel, digital controlled variable gain amplifier featuring high linearity over the entire gain control range with noise figure less than 7dB in its maximum gain state. The gains of two 6-bit digital step attenuators are programmed with a serial mode control interface (SPI). The RFDA0057 is packaged in a small 7.0mm x 7.0mm leadless laminate MCM, which contains plated through thermal vias for ultra-low thermal resistance. This module is easy to use with no external matching components required.

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Datasheet: RFDA0057 Digital Controlled Variable Gain Amplifier