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User's Guide
SNOA553B–October 2010–Revised May 2013
AN-2081 LMH6517EVAL-R1 Evaluation Board
Figure 1. LMH6517EVAL-R1 Evaluation Board
1 General Description
The LMH6517EVAL-R1 evaluation board is designed to aid in the characterization of Texas Instruments'
High Speed LMH6517 Digital Controlled Variable Gain Amplifier (DVGA).
The evaluation board is used as a guide for high frequency layout and as a tool to aid in device testing
and characterization.
2 Basic Operation
The LMH6517 DVGA has differential inputs and differential outputs. To aid evaluation with 50Ω, single
ended test equipment the LMH6517EVAL-R1 evaluation board is shipped with transformers on both the
input and output signal paths. The single ended signal path uses the IN+ and OUT+ marked connectors.
The IN− and OUT− signal paths are grounded and the SMA connectors are not installed.
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SNOA553B–October 2010–Revised May 2013 AN-2081 LMH6517EVAL-R1 Evaluation Board
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