Patent ID: 8179194

Claim:
A circuit for generating a reference voltage between a first output and a second output, the circuit comprising: a first follower transistor comprising a first control node, a first follower node coupled to a first output, and a first supply node; a second follower transistor comprising a second control node; a second follower node coupled to a second output; a second supply node; a first voltage drop circuit coupled between a circuit supply node and the second supply node, wherein, the circuit is biased such that a potential difference between the circuit supply node and the second supply node is greater than a potential difference between the circuit supply node and the first supply node, and the circuit is further biased such that a potential difference between the circuit supply node and the second control node is greater than a potential difference between the circuit supply node and the first control node; and a driver coupled to the first control node and the second control node, wherein the driver comprises an amplifier comprising a first amplifier output coupled to the first control node and a second amplifier output coupled to the second control node, a third follower transistor comprising a third control node coupled to the first amplifier output, a third follower node coupled to a first input of the amplifier, and a third supply node, and a fourth follower transistor comprising a fourth control node coupled to the second amplifier output, a fourth follower node coupled to a second input of the amplifier, and a fourth supply node.