Wide-Swing Class AB Regulated Cascode Current Mirror

Abstract

A micropower regulated cascode CMOS current mirror is presented, combining floating gate and quasi floating gate MOS transistors to achieve both wide swing and class AB operation, respectively. Measurement results for a 0.5 μm CMOS test chip prototype are included, showing that the current mirror can provide a THD at 100 kHz of -44 dB for a supply voltage of ±0.75 V and input current amplitudes 20 times larger than the bias current.

Class AB Voltage Follower and Low-Voltage Current Mirror with Very High Figures of Merit Based on the Flipped Voltage Follower

“…This lead to a total quiescent current and power dissipation of the proposed mirror that is only 25% higher than the power dissipation of the mirrors of Figure 2. (7) The proposed current mirror can be easily transformed into a class AB mirror using the techniques reported in [11].…”

High-performance flipped voltage follower based low input resistance current mirror with wide current mirroring range and high output resistance

“…In the literature, various methods have been proposed to enable low voltage operation of current mirrors [16]. The various current mirrors based on these techniques that have been reported in literature are current mirrors based on floating-gate technique [17][18], current mirrors using bulk-driven technique [19][20], quasi-floating gate based current mirrors [21][22], current mirror based on both floating-gate and quasi floatinggate technique [23] and current mirrors using both bulk-driven and quasi-floating gate technique [24][25]. But these techniques suffer from the limitation of special fabrication steps.…”