7.3.8 Power Trimming

The LM98640QML-SP provides an adaptive power scaling feature that allows the user to optimize power consumption based on the maximum operating frequency and the maximum amount of gain required. The power scaling mode is selectable through the PGA Power Trimming and ADC Power Trimming registers (0x02,0x03). The settings in these registers are common for both channels PGA and ADC. Using these registers the user can control the current of the two stages of the PGA, and the current for the two levels of the ADC. The following table provides a set of baseline configurations for various operating frequencies and gain ranges.

These configurations should be treated as baseline values and can be tuned to your specific application.