UG-190

Evaluation Board User Guide

Rev. A | Page 4 of 8

SMA INPUT/OUTPUT CONNECTORS

The inputs and outputs have edge-mounted Subminiature A

(SMA) connectors for straightforward connection to coaxial cables.

The recommended connector type is Johnson Components™,

Part Number 142-0701-801 or equivalent.

OTHER COMPONENTS

The components described in this user guide pertain mostly to

traditional amplifier topologies. Footprints are provided for a

number of other components on the board to allow the user to

be more creative than the traditional designs. A component

labeled as a capacitor need not be a capacitor provided that it

fits the user’s application circuit and the footprint on the board.

In application circuits where footprints for desired components

are not available on the board, the user is encouraged to find ways

to include them. For example, if an additional shunt element is

required, the user can scrape some solder mask away from the

ground plane and trace (if necessary) to make a place for the

additional part. Furthermore, 1206 elements can be stacked on

top of each other to implement a parallel circuit. An example of

this includes stacking capacitors across R17 and R18 to realize a

zero in the closed-loop transfer function. This is one way to

insert pre-emphasis in a line-driver application.