I'm looking for a supply modulator for envelope tracking application.
I came across some envelope trackers from HMC.
What are the differences between HMC1021 and HMC1120?
Which is better for this application?
HMC1120 ETOUT has different gain and intercept, compared to HMC1021. Because of this, dynamic range of the ETOUT is somewhat larger for the HMC1120. Compare datasheets, page 2 for this information. So for a linearized PA using ET, the efficiency improvements can be captured over a wider operating power range.