Low-Power Programmable Quick Turn Clock

T M

47745 Fremont Blvd., Fremont, California 94538 Tel (510) 492-0990 Fax (510) 492-0991 www.phaselink.com Rev 12/12/06 Page 1

FEATURES

• Advanced low-power, space saving programmable

PLL design

• Very low Jitter and Phase Noise (30-70ps Pk-Pk typical)

• Up to 2 programmable clock outputs

• Output frequency up to 75MHz.

• Accepts Crystal or Ref Clock input

o

Fundamental Crystal: 10MHz-50MHz

o

Reference Input: 1MHz to 100MHz

• Accepts >0.1V reference signal input voltage

• Single 1.8V, 2.5V, or 3.3V ± 10% power supply

• Operating temperature range from -40C to 85°C

/RoHS compliant packages

DESCRIPTION

The PL611s-08 is a low-power general purpose

frequency synthesizer and a member of PhaseLink’s

Programmable ‘Quick Turn Clock (QTC)’ family.

PhaseLink’s PL611s-08 can generate two system

clock frequencies of up to 75MHz from a 10MHz to

50MHz fundamental crystal or a 1MHz to 100MHz

Reference clock source. The PL611s-08 offers the

best phase noise and jitter performance, and power

consumption of its rivals. Cascading of the ICs to

produce additional clock frequencies is also

supported.

PACKAGE PIN CONFIGURATION

BLOCK DIAGRAM

Phase

Detector

Charge

Pump

Loop

Filter

VCO

XIN/FIN

XOUT

R-Counter

(8-bit)

CLK0

Programming

Logic

OE, CLK1

XTAL

OSC

M-Counter

(11-bit)

P-Counter

(5-bit)

Programmable

CLoad

Programmable Function

1

2

3

4

5

6

OE, CLK1

GND

XIN, FIN

VDD

XOUT

CLK0

DFN

DFN

DFN

DFN----6

6

6

6L

L

L

L

((((2

2

2

2....0

0

0

0mmx

mmx

mmx

mmx1

1

1

1....3

3

3

3mmx

mmx

mmx

mmx0

0

0

0....6

6

6

6mm

mm

mm

mm))))

SOT

SOT

SOT

SOT23

23

23

23----6

6

6

6L

L

L

L

((((3

3

3

3....0

0

0

0mmx

mmx

mmx

mmx3

3

3

3....0

0

0

0mmx

mmx

mmx

mmx1

1

1

1....35

35

35

35mm

mm

mm

mm))))

1

2

3

4

5

6

GND

OE, CLK1

XIN, FIN

VDD

SC

SC

SC

SC70

70

70

70----6

6

6

6L

L

L

L

((((2

2

2

2....3

3

3

3mmx

mmx

mmx

mmx2

2

2

2....25

25

25

25mmx

mmx

mmx

mmx1

1

1

1....0

0

0

0mm

mm

mm

mm))))

CLK0

XOUT

XIN, FIN

OE, CLK1

GND

XOUT

VDD

CLK0

1

2

3

6

5

4