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CATV Infrastructure Amplifier 1.2 GHz CCAP/Edge QAM/CMTS Driver

The ACA1240 is a GaAs based amplifier that contains highly linear amplification and attenuation stages for use in CATV CCAP/EQAM/CMTS modulators and networks. It incorporates a continuously adjustable linear attenuator that is controlled by an external analog voltage. This glitch-free attenuator provides a minimum of 20 dB of continuously variable attenuation and is preceded by a high-linearity pre-amplifier and followed by a high-gain output driver. Both input and output are matched to 75 Ω using balun transformers.

The ACA1240 operates from a single 12 V supply and is offered in an 11 mm x 11 mm surface-mount package.


  • 35 dB gain
  • Meets DRFI specification +5 dB margin
  • High-linearity, high-gain integrated amplifier with an adjustable linear attenuator
  • Balanced inputs and outputs matched for a 75 Ω system
  • 0 to 20 dB continuously adjustable attenuation using an external analog control signal
  • Single 12 V supply with 6 W power consumption
  • High-linearity GaAs process
Data Sheets ACA1240: CATV Infrastructure Amplifier 1.2 GHz CCAP/Edge QAM/CMTS Driver ACA1240_204580G.pdf (992 KB)
ProductName : ACA1240
Description : 1.2 GHz CCAP/Edge QAM/CMTS Driver
Gain (dB) Min : 35
Gain (dB) Max : 35
Supply Current Typ. (mA) : 500
Noise Figure Typ. (dB) : 4.5
CTB (dBc) Typ :
CSO (dBc) Typ :
XMOD (dBc) Typ :
Product Information: New
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