The AD53500 is a complete high speed driver designed for use in digital or mixed signal test systems where high speed and high output drive capabilities are needed. Combining a high speed monolithic process and a unique surface mount package, this product attains superb electrical performance while preserving optimum packing densities and long-term reliability thanks to an ultrasmall 20-lead, PSOP package with built-in heat sink. High and low reference levels can be set within a 2 V to +6 V range with low offset voltage and high gain accuracy. A 2.5 output resistance allows use of an external backmatch resistor for application to 50 , 25 or other complex impedance load requirements. Without a backmatch resistor it is also capable of driving highly capacitive loads, typically achieving a rise/fall time