Upstream CATV Amplifier

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The MAX3510 is a programmable power amplifier for use in CATV upstream applications. The device outputs up to 64dBmV (continuous wave) through a 2:1 (voltage ratio) transformer. It features variable gain controlled by a 3-wire digital serial bus. Gain control is available in 1dB steps. The device operates over a frequency range of 5MHz to 65MHz.

The MAX3510 offers a transmit-disable mode, which places the device in a high-isolation state for use between bursts in TDMA systems. In this mode the output stage is shut off, minimizing output noise. When entering and leaving transmit-disable mode, transients are kept to 7mV nominal at full gain. In addition, supply current is reduced to 25mA.

Two power-down modes are available. Software-shutdown mode permits power-down of all analog circuitry while maintaining the programmed gain setting. Shutdown mode disables all circuitry and reduces current consumption to less than 10µA.

The MAX3510 is available in a 20-pin QSOP package for the extended-industrial temperature range (-40°C to +85°C).
MAX3510: Typical Operating Circuit MAX3510: Typical Operating Circuit Enlarge+

Key Features

  • Ultra-Low Power-Up/Down Transients, 7mV Typical at 59dBmV Output
  • Single +5V Supply
  • Output Level Ranges from <8dBmV to 64dBmV
  • Gain Programmable in 1dB Steps
  • Low Transmit Output Noise Floor: -47dBmV (160kHz BW)
  • Low Transmit-Disable Output Noise: -70dBmV
  • Two Power-Down Modes


  • Cable Modems
  • Cable Television Set-Top Boxes
  • CATV Status Monitors
  • Telephony-Over-Cable
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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