Hi all,
We want to manually control the output voltage of VC_LPF pin thanks to internal DAC of LMH1983. To make this, we use the "LOR Control Free-run Control Voltage MSB" register (address 0x18) and the "LOR Control Free-run Control Voltage LSB" register (address 0x19).
We would like to know when the new 10-bit value applies to internal DAC. After the write of MSB Register ? After the write of LSB register ? After the write of any of these two registers ? The datasheet doesn't talk about a locking mechanism (unlike registers x16 and x17).
My main concern is about the change of value from b1011111111 to b1100000000.
There is a risk that my value going through an unwanted temporary value that may create a large jitter on my output clock.
Many thanks for the help on this subject.
Regards,
Arnaud