Abstract
Abstract An IF strip for a wireless receiver supports variable baud rate by changing filter bandwidth. Sliding and step adaptive dynamic range are both used at IF to minimize the power consumption at the prevailing channel conditions. A combination of VGA and PGA is developed for 64-QAM. The circuit drains an average of 16 mA from 3.3 V, with peak supply current of 73 mA. The differential input noise is as low as 3.9 nV/adHz, while maximum IIP3 is +22 dBm with respect to 100 ohms.
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