Research in analog integrated circuits has recently gone in the direction of low-voltage (LV), low-power (LP) design, especially in the environment of portable systems where a low supply voltage, given by a single-cell battery, is used. These LV circuits have to show a reduced power consumption to maintain a longer battery lifetime as well. In this area, traditional voltage-mode techniques are going to be substituted by the current-mode approach, which has the recognized advantage to overcome the gain-bandwidth product limitation, typical of operational amplifiers. Then they do not require...