A 10Gb/s CMOS AGC Amplifier with 35dB Dynamic Range for 10Gb Ethernet

A 10Gb/s AGC amplifier is implemented in 0.18μm CMOS technology. The circuit uses a linear-in-dB controlled VGA with 58dB tuning range. For input swings from 18mV
_pp
to 1V
_pp
, the output swing is 430mV
_pp
within +0.4 to -0.8dB variations. The measured dynamic range is 35dB with BER <10
^-12
. The AGC consumes 54mW from a 1.8V supply