Texas Instruments 2000 series, Reference Manual

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High Performance RA-RFM RI-RFM-008B February 2002
42
CAUTION:
When using pulse widths smaller than 50%, the RA-RFM
transmitter power stage works less efficiently. This leads
to an increased power dissipation and thus to a higher
temperature of the transmitter power stage. Ensure that
the antenna resonance voltage does not exceed 200 Vp
when the selected oscillator signal pulse width setting is
smaller than 25%.
Note:
The pulse width for an oscillator signal pulse width setting of 5% and
smaller is extremely short. The pulse response of the RA-RFM
transmitter power stage to this short pulse is different for each unit. In
order to have reproducible field strength values for different RA-RFMs,
it is not recommended to use the smallest pulse width setting.