Power Amplifier Close Loop Ramp Control - Analog Devices ADRV9001 User Manual

Reference Manual ADRV9001
POWER AMPLIFIER RAMP CONTROL
Figure 211. ADRV9001 Power Amplifier Open Loop Ramp Control and Timing
Use the API adi_adrv9001_Tx_PaRamp_Configure() to configure the necessary parameters for the power amplifier open-loop ramp control.

POWER AMPLIFIER CLOSE LOOP RAMP CONTROL

The power amplifier close loop ramp control has a current sensor loop through AuxADC, dedicated digital feedback control logic, and the
power amplifier bias control through AuxDAC. Figure 212 shows an example of the circuits with the ADRV9001 power amplifier close-loop ramp
control.
Figure 212. Power Amplifier Close Loop Ramp Control with ADRV9001 AuxDAC/AuxADC Amplifying and Buffering Circuits
In the open-loop control mode, the look-up table (LUT) stores the AuxDAC words, but in the close-loop control mode, the LUT stores the
expectation of the AuxADC inputs vector. The manual control mode of the power amplifier close-loop ramp control can be applied in the power
amplifier ramp factory calibration, and it helps to build the LUT vectors.
More details of power amplifier close loop ramp control are available when the software is supported.
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