4.5 Dead-Band Jitter

When the rising and falling edges of the input source are asynchronous to the CWG clock, it creates jitter in the dead-band time delay. The maximum jitter is equal to one CWG clock period. Refer to the equations below for more details.

$T_{DEAD-BAND\_MIN}=\frac{1}{F_{CWG\_CLOCK}}•DBx$

$T_{DEAD-BAND\_MAX}=\frac{1}{F_{CWG\_CLOCK}}•(DBx+1)$

$T_{JITTER}=T_{DEAD-BAND\_MAX}-T_{DEAD-BAND\_MIN}$

$T_{JITTER}=\frac{1}{F_{CWG\_CLOCK}}$

$T_{DEAD-BAND\_MAX}=T_{DEAD-BAND\_MIN}+T_{JITTER}$

Dead-Band Delay Example Calculation

$$\begin{gathered} DBx=0x0A=10 \\ {F}_{CWG\_CLOCK}=8MHz \\ {T}_{JITTER}=\frac{1}{8MHz}=125ns \\ {T}_{DEAD-BAND\_MIN}=125ns•10=1.25\mu s \\ {T}_{DEAD-BAND\_MAX}=1.25\mu s+0.125\mu s=1.37\mu s \end{gathered}$$