TLC2932A

HIGH PERFORMANCE PHASE LOCKED LOOP

SLES150 − OCTOBER 2005

9

TI.COM

VCO section

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

fOSC

Operation oscillation frequency

RBIAS = 3.3 kΩ, VCO IN = 1/2 VDD

37

57

75

MHz

fSTB

Time to stable oscillation (see Note 20)

10

us

tr

Rise time

CL = 15 pF

7.5

10

ns

tf

Fall time

CL = 15 pF

6.4

10

ns

fDUTY

Duty cycle at VCO OUT

RBIAS = 3.3 kΩ, VCO IN = 1/2 VDD

45%

50%

55%

α (fOSC)

Temperature coefficient of oscillation

frequency

VCO IN = 1/2 VDD, TA = –20°C to

75

°C

–0.346

%/

°C

kSVS(fOS

C)

Supply voltage coefficient of oscillation

frequency

VCO IN = 1/2 VDD, VDD = 4.75 V

to 5.25 V

0.002

%/mV

Jitter absolute (see Note 21)

PLL jitter, N = 128

145

ps

NOTES: 20. The time period to the stable VCO oscillation frequency after the VCO INHIBIT terminal is changed to a low level.

21. Jitter performance is highly dependent on circuit layout and external device characteristics. The jitter specification was made with

a carefully deigned PCB with no device socket.

PFD section

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

fmax

Maximum operation frequency

38

MHz

tPLZ

PFD output disable time from low level

20

40

ns

tPHZ

PFD output disable time from high level

20

40

ns

tPZL

PFD output enable time to low level

4

20

ns

tPZH

PFD output enable time to high level

4.3

20

ns

tr

Rise time

CL = 15 pF

2.1

10

ns

tf

Fall time

CL = 15 pF

1.3

10

ns