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. The amplifier delivers up to +69dBmV at the output of the balun. Gain is controllable in accurate 1dB steps. The device is provided in a thermally enhanced, exposed die flag package.
The RF3321 is a variable gain amplifier designed for use in CATV reverse path (upstream) applications, specifically compliant with DOCSIS standards for cable modems. It features a gain control range of 56dB, programmable via a three-wire digital bus, and operates over a frequency band of 5MHz to 65MHz. The device delivers up to +69dBmvV at the output of the balun and is provided in a thermally enhanced, exposed die flag package.
| Operating Frequency Range | 5MHz to 65MHz |
|---|---|
| Maximum Voltage Gain | 31dB |
| Minimum Voltage Gain | -25dB |
| Maximum Output Level | +69dBmvV |
| Supply Voltage 1 (VCC1) | 4.75 to 5.25 V |
| Supply Voltage 2 (VCC2) | 6.65 to 7.35 V |
| Input Impedance | 75 Ohm Differential |
| Output Impedance | 300 Ohm |
The device operates over the frequency band of 5MHz to 65MHz for use in current U.S. and European systems.
Yes, the amplifier is designed to be DOCSIS-compliant for use in cable modems.
The gain control covers a 56dB range and is serially programmable via a three-wire digital bus.