250 MHz to 2400 MHz

RF Variable Gain Amplifier

ADL5592

Rev. 0

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FEATURES

Output frequency range: 250 MHz to 2400 MHz

Noise figure: 5.7 dB at 1960 MHz

2 digital attenuators, each with 31 dB range

1 dB attenuation step size

Single SPI port

Single supply: 4.5 V to 5.5 V

40-lead, 6 mm × 6 mm LFCSP package

APPLICATIONS

GSM/EDGE and cellular communications systems

FUNCTIONAL BLOCK DIAGRAM

RFOUT

LOIP

LOOP EN

LOOP OUT

SPI PORT*

ADL5592

RFIN

ATTENUATOR

CONTROL

CIRCUITRY

*COMPRISES THE DATA, CLK, AND LE PINS.

Figure 1.

GENERAL DESCRIPTION

The ADL5592 is a digitally programmable variable gain

amplifier (VGA) designed for use from 250 MHz to 2400 MHz.

Two digitally programmable attenuators are cascaded with a

high linearity fixed-gain amplifier. The device also includes a

mixer, which can be used to mix the transmitted signal into an

adjacent receive band for loopback testing.

The ADL5592 can be used in conjunction with a direct-to-RF

modulator, such as ADL537x and ADL539x, in cellular

communications systems such as GSM/EDGE.

The ADL5592 is available in a 6 mm × 6 mm, 40-lead exposed-

paddle LFCSP package. The device operates from the −40°C to

+85°C temperature range.