We started using the J2120A injector and had question.
DC input is specified 50V max. We like to know the minimum as I hope this is not issue. Ideally we like to go down to 1.2Vdc but I’m most certain this is not possible.
The J2120A is a passive device and yes, it can provide a 1.2V output. The graph below is from the J2120A webpage showing the operating current dependent voltage drop and output resistance.
Since the regulation requirement for your 1.2V is probably tight, I would see the attached application note for remote sensing the J2120A. Of course the remote sense is quite slow, so that it doesn’t regulate out the modulation signal. Not every power supply has the compliance needed (up to about 3V), but the Picotest P9610A does. You will still want to avoid fast load changes so that you don’t see large transients on the 1.2V J2120A output.
The J2120A is a passive device and yes, it can provide a 1.2V output. The graph below is from the J2120A webpage showing the operating current dependent voltage drop and output resistance.
Since the regulation requirement for your 1.2V is probably tight, I would see the attached application note for remote sensing the J2120A. Of course the remote sense is quite slow, so that it doesn’t regulate out the modulation signal. Not every power supply has the compliance needed (up to about 3V), but the Picotest P9610A does. You will still want to avoid fast load changes so that you don’t see large transients on the 1.2V J2120A output.