In high-end instrumentation and high-sensitivity communications applications, high-speed and high-resolution Analog-to-Digital Converters are often required. At the 16-bit performance level it becomes challenging to design the driver interface without degrading performance. Improper matching can noticeably degrade the signal-to-noise ratio and reduce the dynamic range. Not only is the input impedance not constant over a reasonable frequency range, the sample-and-hold switching of the ADC front-end disrupts the input network. The Smith chart shown in this slide illustrates the rotation of the impedance curve which results from the switching action. Additionally, the fast settling requirement and the wide bandwidth make it very difficult to optimize for a given application. Therefore, the driver amplifier must meet several requirements at the same time. The amplifier, however, is generally followed by an anti-alias filter. The filter must be designed to match to the ADC inputs as well as provide the appropriate frequency response. Many of these demands are competing and so there tends to be a few rounds of iteration and compromise before an optimal solution is obtained. The LTM9001 is an integrated solution that is intended to eliminate much of this effort.