I want to use the HMC920 for the HMC7357

Question

Do you have an application note that discusses how to increase the output current of the HMC920 in order to use the controller with higher power devices like the HMC7357? 
 Thanks 
 Sampie

ADIApproved · Accepted Answer

Hi Sampie, 
 You can use multiple number of HMC920s to increase the Idrain capability. HMC920 is rated up to 500 mA. HMC7357`s default bias configuration requires 1.2A, so you will need 3x HMC920s. 
 You can also bias HMC7357, by using HMC980, which can deliver 1.2A for HMC7357. 
 Attached sch shows using multiple number of bias controller to increase the drain output current capability. The bias controller used on the attached SCH is HMC980, and this circuit is tested and used by us and by our customers. Same idea can be used for HMC920. 
 Best, 
 Kagan