A 9.5mW analog baseband RX section for 60GHz communications in 90nm CMOS

The analog baseband section of a receiver for high data-rate 60GHz wireless communications is implemented in 90nm CMOS. It consists of the cascade of a 1
^st
-order transimpedance amplifier with finely programmable gain, a 4
^th
-order source-follower based filter and a coarse gain 1
^st
-order programmable gain amplifier, resulting in an overall 6
^th
-order selectivity and a 1GHz cut-off frequency. Gain can be programmed from 0dB up to 20dB with 1dB step control, drawing 9.5mA (0–9dB gain range) or 10.8mA (10–20dB gain range) from a 1V supply. A 8.2dBm IIP3 and a −145dBm/Hz IRN are measured respectively at 0dB and 20dB gain. The entire baseband section occupies 400×390µm
²
die area.