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Broadband/CATV (75 Ohm) Reverse Amplifier
The ARA2004 is designed to provide the reverse path amplification and output level control functions in a CATV Set-Top Box or Cable Modem. It incorporates a digitally controlled precision step attenuator that is preceded by an ultra low noise amplifier stage, and followed by an ultra-linear output driver amplifier. This device uses a balanced circuit design that exceeds the MCNS/DOCSIS requirement for harmonic performance at a +60 dBmV output level while only requiring a single polarity +5 V supply. Both the input and output are matched to 75 ohms with an appropriate transformer. The precision attenuator provides up to 58 dB of attenuation in 1 dB increments via a three-wire serial interface. With external passive components, this device meets IEC 1000-4-12 and ANSI/IEEE C62.41-1991 100KHz ringwave tests, as well as IEC1000-4-5 1.2/50 µS surge tests. The ARA2004 is offered in a 28-pin SSOP package featuring a heat slug on the bottom of the package.
Key AttributesValue
Frequency Range : Minimum Frequency5 MHz
Frequency Range : Maximum Frequency100 MHz
Gain29.3 dB
Gain Flatness±1.5 dB
Noise Figure3 dB
P1dB68.5 dBmV
Attenuation Steps30.75 dB
2nd Harmonic Distortion Level-75 dBc
3rd Harmonic Distortion Level-60 dBc
3rd Order Output Intercept78 dBmV
Package Type
QuantityUnit Price
1 - 9
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This product is available in the following countries:
  • Global