The IEEE 802.11a standard is the Wireless Local Area Network (WLAN) standard for tomorrow's high imposition communication world. However, battery life of the device is a major problem for today's user because everyone wants to avoid the need of frequently recharging the battery of the device, i.e. laptops. As a result, power consumption of the device has to be low while maintaining required or equal performance. Analog to Digital Converters (ADCs) are important power consumers in any device. So it is worth the inventor's time to choose design that has the best trade-off between power consumption and performance, i.e. resolution and speed.