In a quest for flexibility, receivers for wireless communications are being digitized. Analog filters and variable gain amplifiers (VGA) are exchanged for digital processing at the expense of a very challenging ADC. Wireless interconnectivity in particular, seems a first candidate for a full-digital baseband implementation. Compared to mobile communication, sensitivity and interferer levels are moderate. Two converter solutions for a full-digital Bluetooth receiver are presented here. The first –rather conventional- ADC achieves high resolution and low power consumption by careful design. The second solution merges analog filtering and VGA into the ADC. This results in a further power reduction because the converter performance is better tailored to the input signal.
|Title of host publication||Analog Circuit Design|
|Editors||J.H. Huijsing, M. Steyaert, A. Roermund, van|
|Place of Publication||Dordrecht|
|Publisher||Kluwer Academic Publishers|
|Number of pages||405|
|Publication status||Published - 2004|