STEVAL-TDR005V1

STEVAL-TDR005V1 class of operation

Doc ID 14845 Rev 2

7/11

5

STEVAL-TDR005V1 class of operation

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Class B: a low bias point with ~100 mA per transistor

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Class AB: a higher bias point with ~ 900 mA per transistor

To select a bias point, STEVAL-TDR005V1 has a control port “BIAS”.

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The bias point is 2x 100 mA if “BIAS” is left open and in this case a DC voltage of ~5 V

is present

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The bias point is 2 x 900 mA if “BIAS” is connected to ground.

"PA_ON" control port / ON-OFF bias current

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To switch-on biasing circuit, connect “PA_ON” to ground.

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To switch-off biasing circuit, left open “PA_ON”