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RF3321 - REVERSE PATH HIGH OUTPUT POWER PROGRAMMABLE GAIN AMPLIFIER

General Description

RF3321 Absolute Maximum Ratings Parameter Supply Voltage (VCC1) Supply Voltage (VCC2) Input RF Level Operating Ambient Temperature Storage Temperature Humidity Maximum Power Dissipation Maximum TJ Preliminary Rating -0.5 to +5.5 -0.5 to +7.5 12 -40 to +85 -40 to +150 80 0.5 150 Unit VDC VDC dBm

Key Features

  • Differential Input and Output.
  • 31dB Maximum Voltage Gain.
  • -25dB Minimum Voltage Gain.
  • 5MHz to 65MHz Operation.
  • Sophisticated Power Management.
  • DOCSIS 1.1 RF Compliant 16 Power Control GND NC NC VOUT VOUTB SDA CS SCLK 15 14 13 12 11 Gain Control and Serial Bus 10 9 Ordering Information RF3321 RF3321 PCBA Reverse Path High Output Power Programmable Gain Amplifier Fully Assembled Evaluation Board Tel (336) 664 1233 Fax (336) 664 0454 http.

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Preliminary RF3321 REVERSE PATH HIGH OUTPUT POWER PROGRAMMABLE GAIN AMPLIFIER 2 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 3 -A- The RF3321 is a variable gain amplifier for use in CATV reverse path (upstream) applications. It is designed to be DOCSIS-compliant for use in cable modems. The gain control covers a 56dB range and is serially programmable via three-wire digital bus for compatibility with standard baseband chipsets. Amplifier shutdown and transmit disable modes are hardware-controlled. The device operates over the frequency band of 5MHz to 65MHz for use in current U.S. and European systems.