Hi all,

Please advise to us.

In the datasheet @ HMC835LP6GE,

1.2.1.4.4 VCO AutoCal Time & Accuracy, page 24,

Tcal = k128TFSM + 6TPD 2n + 7 · 20TFSM (EQ 7)

Tcal = Txtal (6R · 2n + (140+(3 · 128)) · 2m) (EQ 8)

What is the "k" ?

We can not understand equivalently equivalently (EQ 7) and (EQ 8).

Best regards,

sss

The k parameter controls how many wait states are inserted by the autocal state machine. This parameter is set by Reg 0x0A[7:6] but values other than k=1 are reserved for the HMC835. EQ 8 has a typo, it should include k as follows:

Tcal = Txtal (6R · 2^n + (140+128k) · 2^m)