CDC2582

3.3V PHASELOCK LOOP CLOCK DRIVER

WITH DIFFERENTIAL LVPECL CLOCK INPUTS

SCAS379B − FEBRUARY 1993 − REVISED FEBRUARY 1996

8

POST OFFICE BOX 655303

POST OFFICE BOX 1443

PARAMETER MEASUREMENT INFORMATION

tphase error 1

tphase error 2

tphase error 3

tphase error 4

tphase error 7

tphase error 5

tphase error 6

tphase error 8

tphase error 9

CLKIN

Outputs

Operating

at 1/2 CLKIN

Frequency

Outputs

Operating

at CLKIN

Frequency

CLKIN

NOTES: A. Output skew, tsk(o), is calculated as the greater of:

− The difference between the fastest and slowest of tphase error n (n = 1, 2, ...6)

− The difference between the fastest and slowest of tphase error n (n = 7, 8, 9)

B. Process skew, tsk(pr), is calculated as the greater of:

− The difference between the maximum and minimum tphase error n (n = 1, 2, . . . 6) across multiple devices under identical

operating conditions

− The difference between the maximum and minimum tphase error n (n = 7, 8, 9) across multiple devices under identical

operating conditions

Figure 2. Skew Waveforms and Calculations