A capacitor bank adapted to provide a variable capacitance to an
electronic circuit is provided. The capacitor bank has at least a most
significant bit and a least significant bit and includes a first
capacitor cell having a first capacitance value and disposed between a
first node and a second node, thereby forming the most significant bit.
The capacitor bank also includes a second capacitor cell having a second
capacitance value and disposed between the first node and the second
node, thereby forming the least significant bit. The second capacitance
value is less than the first capacitance value. Additionally, the second
capacitor cell includes a first T-network capacitor unit in electrical
communication with a source of a transistor and a second T-network
capacitor unit in electrical communication with a drain of the
transistor.