ARA2001

The ARA2001 is designed to provide the reverse path amplification and output level control functions in a CATV Set-Top Box or Cable Modem. ARA2001 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. ARA2001 uses a balanced circuit design that exceeds the MCNS/DOCSIS requirement for harmonic performance at a +60dBmV output level while only requiring a single polarity +5V 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. The ARA2000 has a programmable address that allows multiple devices to share a common control bus. The ARA2001is offered in a 28-pin SSOP package featuring a heat slug on the bottom of the package.