Product Description

The RF3322 is a variable gain amplifier for use in CATV reverse path (upstream) applications. It is DOCSIS-compliant for use in cable modems. The gain control covers a 58dB range and is serially programmable via three-wire digital bus for compatibility with standard baseband chipsets. Amplifier shutdown and transmit disable modes are software- and hardware-controlled. The device is placed into sleep mode via the serial control bus. The device operates over the frequency band of 5MHz to 65MHz for use in current U.S. and European systems.

Features

• Single 5V Supply

• Differential Input and Output

• -30dB to +28dB Voltage Gain Range

• 5MHz to 65MHz Operation

• Sophisticated Power Management

• DOCSIS 1.1 RF Compliant

Typical Applications

• Euro-DOCSIS/DOCSIS Cable Modems

• CATV Set-Top Boxes

• Telephony Over Cable

• Home Networks

• Automotive/Mobile Multimedia

• Coaxial and Twisted Pair Line Driver