CLC522 - National Semiconductor

CLC522 Wideband Variable-Gain Amplifier

The CLC522 variable gain amplifier (VGA) is a dc-coupled, twoquadrant multiplier with differential voltage inputs and a single-ended voltage output. Two input buffers and an output operational amplifer are integrated with the multiplier core to make the CLC522 a complete VGA system that does not require external buffering. The CLC522 provides the flexibility.

Features

s s s s s s s 330MHz signal bandwidth: Avmax = 2 165MHz gain-control bandwidth 0.3° to 60MHz linear phase deviation 0.04% (-68dB) signal-channel non-linearity >40dB gain-adjustment range Differential or single-end voltage inputs Single-ended voltage output Variable attenuators Pulse amplitude equalizers HF modulators Automatic gain control & leveling loops Video production switching Differential line receivers Voltage controlled filters Gain vs. Gain Control Voltage (V g ) 10 Applications s s s s s s s Gain (V/V) 0 -1.1 Gain Control Voltage, Vg (Volts) 1.1 Typical Application 2nd Order .