One example includes a circuit. The circuit includes a first transistor having a first control terminal, a first current terminal, and a second current terminal. The first control terminal can be a first input to the circuit. The circuit also includes a second transistor having a second control terminal, a first current terminal, and a second current terminal. The second control terminal can be a second input to the circuit. The circuit also includes an adaptive bias current source coupled to the second current terminal of the respective first and second transistors. The circuit further includes a voltage offset generator coupled in parallel with the second transistor.