Bandwidth extension for a voltage buffer

A voltage buffer, comprising:

• a first source follower having an input and an output;
• a second source follower having an input and an output;
• a first transistor, wherein a drain of the first transistor is coupled to the output of the first source follower;
• a first coupling capacitor coupled between a gate of the first transistor and the input of the second source follower;
• a second transistor, wherein a drain of the second transistor is coupled to the output of the second source follower;
• a second coupling capacitor coupled between a gate of the second transistor and the input of the first source follower;
• and
• a current source coupled to a source of the first transistor and a source of the second transistor.

A method for operating a voltage buffer, wherein the voltage buffer includes a first source follower and a second source follower, the method comprising:

• receiving a first input voltage and a second input voltage;
• steering a current of a current source to the first source follower during a first time period in which the second input voltage is greater than the first input voltage;
• and
• steering the current of the current source to the second source follower during a second time period in which the first input voltage is greater than the second input voltage.