The transfer function is:
#AD5721R range setup
Vout can not reach +/- 10V if VDD=+5.5V and VSS=-5.5V. Vout can only reach +/-4.5V due to the 1V drop. But how shall I program RA to get +/-4.5V Vout?
The documentation states that the register RA is used:
Thanks for your advice.
I want to use the 5721R to control the gain of the HMC996 VGA.
It requires a -4.5 to 0V voltage.
I am also using a HMC980LP4E to generate the 2 gate voltages that control
the bias current.