Question
The HMC930A requires three voltage supplies for proper biasing. How can I simplify my bias scheme to ensure that the power-up/power-down sequencingis safe while the bias remains stable across supply, temperature, and process variations?
Answer
ADI offers a complete biasing solution through our line of Active Bias Controllers (ABCs), which simplify the biasing of our enhancement anddepletion type devices operating in Class A regime. The HMC981 is an example of such an ABC product compatible with the HMC930, and its data sheetincludes a table of bias settings for various HMC amplifiers.