A high speed differential analog to digital converter (ADC) is provided. The high speed differential ADC includes a driver section, a comparator section and a decoder section. The driver section includes a pair of series connected resistor ladders. A positive phase and negative phase emitter follower transistor pair is connected to the pair of series connected resistor ladders. The positive phase and negative phase emitter follower transistor has a collector connected to a supply voltage and has an emitter coupled to a respective one of the pair of series connected resistor ladders. A respective positive phase and negative phase AC current source drives the base of the respective positive phase and negative phase emitter follower transistor. A reference DC current source is coupled to the base of the positive phase and negative phase emitter follower transistors for determining a range of the ADC. A current source transistor pair biases the emitter follower transistor pair. A first transistor of the current source transistor pair supplies current to the positive phase emitter follower transistor and a second transistor of the current source transistor pair supplies current to the negative phase emitter follower transistor. The first transistor has a control node capacitively coupled to the emitter of the negative phase emitter follower transistor and the second transistor having a control node capacitively coupled to the emitter of the positive phase emitter follower transistor.