GENERAL DESCRIPTION

The ADL5331 is a high performance, voltage-controlled variable gain amplifier/attenuator for use in applications with frequencies up to 1.2 GHz. The balanced structure of the signal path maximizes signal swing, eliminates common-mode noise and minimizes distortion while it also reduces the risk of spurious feed-forward at low gains and high frequencies caused by parasitic coupling.

FEATURES

Voltage-controlled amplifier/attenuator

Operating frequency: 1 MHz to 1.2 GHz

Optimized for controlling output power

High linearity: OIP3 47 dBm @ 100 MHz

Output noise floor: −149 dBm/Hz @ maximum gain

Input impedance: 50 Ω

Output impedance: 20 Ω

Wide gain-control range: 30 dB

Linear-in-dB gain control function: 40 mV/dB

Single-supply voltage: 4.75 V to 5.25 V

APPLICATIONS

Transmit and receive power control at RF and IF

CATV distribution