Abstract: A low dropout voltage regulator (LDO) includes first and second amplifiers and a current mirror. The first amplifier includes a first input receiving a reference voltage and a second input receiving a voltage proportional to an output of the LDO. The current mirror includes an input current at a first end of the current mirror to an output current at a second end of the current mirror, the input current controlled by an output of the first amplifier and the output current being supplied to the output of the LDO. The second amplifier includes a first input coupled to the first end of the current mirror and a second input coupled to the second end of the current mirror.

Abstract: A system for a Class AB Amplifier output stage that includes a first push pull system connected to an output terminal including a first driving transistor coupled to the output terminal and a second push pull system connected to the output terminal including a second driving transistor coupled to the output terminal. The amplifier also includes a current mode amplifier where the current mode amplifier's output is coupled to the first driving transistor's gate. The amplifier further includes a pair of resistors, a first resistor coupled to a first input terminal of the current mode amplifier, a second resistor coupled to a second input terminal of the current mode amplifier and coupled to the second driving transistor.

Abstract: A system for a Class AB Amplifier output stage that includes a first push pull system connected to an output terminal including a first driving transistor coupled to the output terminal and a second push pull system connected to the output terminal including a second driving transistor coupled to the output terminal. The amplifier also includes a current mode amplifier where the current mode amplifier's output is coupled to the first driving transistor's gate. The amplifier further includes a pair of resistors, a first resistor coupled to a first input terminal of the current mode amplifier, a second resistor coupled to a second input terminal of the current mode amplifier and coupled to the second driving transistor.

Abstract: A reference voltage generator circuit may include at least one MOS transistor and at least one bipolar transistor coupled together to provide an electrical path from an input reference potential to an output of the generator circuit. The electrical path may extend through a gate-to-source path of the MOS transistor and further through a base-to-emitter path of the bipolar transistor. The MOS transistor may be biased by a bias current that is proportional to T2·?(T), where T represents absolute temperature and ?(T) represents mobility of a MOS transistor in the bias current generator. Optionally, the reference voltage generator may include N MOS and M multiple bipolar transistors (N?1, M?1), and the output reference voltage may be N*VGS+M*VBE as compared to the input reference potential.

Abstract: An apparatus, system and method for controlling drive patterns is disclosed. A digital engine for controlling drive patterns may include a profile controller to program characteristics of one or more drive patterns for one or more piezoelectric actuators. The digital engine may further include a register array to store profile information for the one or more drive patterns. Each drive pattern may comprise a plurality of pulses with each pulse having a slope. The digital engine may also include a digital pattern generator to generate the one or more drive patterns based upon the profile information stored in the register array. The digital engine may further include a slope shaping circuit to modify one or more signals based upon an input from the digital pattern generator.