3. TECHNICAL BRIEF
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3.28. Mode Selection
Table 14 Mode Selection
MODE circuitry selects GMSK modulation (logic 0) or EDGE modulation (logic 1). VRAMP controls the
output power for GMSK modulation and provides bias optimization for EDGE modulation depending on
the state of MODE control.
3.29. PAM Schematic
MODE VMODE RF INPUT VRAMP TX ENABLE
GSM Low Fixed Vramp control output Power High
EDGE High Ramp Burst Control Vramp sets PA bias condition, fixed gain PA High
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