CDC2509C

3.3-V PHASE-LOCK LOOP CLOCK DRIVER

SCAS620 – DECEMBER 1998

8

POST OFFICE BOX 655303

TYPICAL CHARACTERISTICS

Figure 5

PHASE ERROR

vs

CLOCK FREQUENCY

20

40

60

80

100

120

140

160

fc – Clock Frequency – MHz

–100

–150

–250

–300

–350

–400

–200

–50

0

–450

–500

VCC = 3.3 V

C(LY) = 30 pF

C(LF) = 0

TA = 25°C

See Note A

Figure 6

PHASE ERROR

vs

SUPPLY VOLTAGE

–100

–150

–250

–300

–350

–400

–200

3.1

3.2

3.3

3.4

3.5

–50

0

–450

–500

fc = 100 MHz

C(LY) = 30 pF

C(LF) = 0

TA = 25°C

See Note A

VCC – Supply Voltage – V

Figure 7

–300

–400

–500

–700

35

45

55

65

75

85

95

105

115

125

–600

–200

VCC = 3.3 V

C(LY) = C(LF) = 30 pF

TA = 25°C

See Notes B to D

fc – Clock Frequency – MHz

CDC2509C

STATIC PHASE ERROR

vs

CLOCK FREQUENCY

Figure 8

–300

–400

–500

–700

35

45

55

65

75

85

95

105

115

125

–600

–200

VCC = 3.3 V

C(LY) = C(LF) = 30 pF

See Notes B to D

fc – Clock Frequency – MHz

CDC2509A

STATIC PHASE ERROR

vs

CLOCK FREQUENCY

NOTES: A. Trace feedback length FBOUT to FBIN = 5 mm, ZO = 50 Ω

B. Phase error measured from CLK to FBIN

C. CLY = Lumped capacitive load at Y

D. CLF = Lumped feedback capacitance at FBIN