Data Sheet

ADCA5190

APPLICATIONS INFORMATION

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Rev. 0 | 21 of 22

LAYOUT CONSIDERATIONS

The layouts in Figure 33 and Figure 34 are similar to that used in

the evaluation circuit for the ADCA5190. When deviating from this

recommended layout, keep the following points in mind:

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All RF components must be kept as close as possible to the

ADCA5190. These components include the transformers and all

tuning components in series or shunt to the RF traces.

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Symmetry must be strictly maintained between the input and

output balun.

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C29 and C30, the feedback capacitors, must be kept as close

as possible to the ADCA5190 and must be referenced to the RF

ground plane.

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Components around Q1 must be kept physically close to the

ADCA5190.

Figure 33. Suggested Downstream CATV Application Circuit with Active Biasing Layout

Figure 34. Suggested Downstream CATV Application Circuit with Passive Biasing Layout