CDCV855, CDCV855I

2.5-V PHASE-LOCK LOOP CLOCK DRIVER

SCAS660A – SEPTEMBER 2001 – REVISED DECEMBER 2002

6

POST OFFICE BOX 655303

PARAMETER MEASUREMENT INFORMATION

VDD/2

CDCV855

–VDD/2

Z = 60

Ω

Z = 60

Ω

C = 14 pF

–VDD/2

R = 10

Ω

R = 10

Ω

Z = 50

Ω

Z = 50

Ω

C = 14 pF

–VDD/2

R = 50

Ω

V(TT)

R = 50

Ω

V(TT)

SCOPE

NOTE: V(TT) = GND

Figure 1. Output Load Test Circuit

Yx, FBOUT

Yx, FBOUT

tc(n)

tc(n+1)

tjit(cc) = tc(n) – tc(n+1)

Figure 2. Cycle-to-Cycle Jitter