0.5kHz-125MHz MHz to KHz Programmable Clock

T M

47745 Fremont Blvd., Fremont, California 94538 Tel (510) 492-0990 Fax (510) 492-0991 www.phaselink.com Rev 2/23/07 Page 1

FEATURES

• Designed for Very Low-Power applications

• Offered in Tiny GREEN/RoHS compliant packages

o

6-pin DFN (2.0mmx1.3mmx0.6mm)

o

6-pin SC70 (2.3mmx2.25mmx1.0mm)

o

6-pin SOT23 (3.0mmx3.0mmx1.35mm)

• Accepts Crystal or Reference Clock inputs

• Input Frequency:

o

Fundamental crystal: 10MHz to 50MHz

o

Reference Input: 1MHz to 125MHz

• Accepts >0.1V reference signal input voltage

• Output Frequency 0.5kHz to 125MHz CMOS.

o

65MHz @ 1.8V operation

o

90MHz @ 2.5V operation

o

125MHz @ 3.3V operation

• One programmable I/O pin can be configured as

OE, PDB, FSEL or CLK1

• Low current consumption:

o

<1.0mA with 27MHz & 32kHz outputs

o

< 5 A when PDB is activated

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

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

DESCRIPTION

The PL611s-18 is a low-cost general purpose

frequency synthesizer and a member of PhaseLink’s

PicoPLL family, the worlds smallest programmable

clocks. PhaseLink’s PL611s-18 offers the versatility

of using a single Crystal (MHz) or Reference Clock

input and producing up to two (kHz/MHz) system

clocks, or a combination of Reference and low

frequency outputs. The PL611s-18 is designed for

low-power applications with very stringent space

requirements and consumes ~1.0mA, while

producing 2 distinct outputs of 27MHz and 32kHz.

The power down feature of PL611s-18, when

activated, allows the IC to consume less than 5 A of

power.

The PL611s-18 fits in a small DFN, SC70, or SOT23

package. Cascading of the PL611s-18 with other

PhaseLink programmable clocks allow generating

system level clocking requirements, thereby

reducing the overall system implementation cost.

In addition, one programmable I/O pin can be

configured as Output Enable (OE), Frequency

switching (FSEL), Power Down (PDB) input, or CLK1

BLOCK DIAGRAM

Phase

Detector

Charge

Pump

Loop

Filter

VCO

XIN/FIN

XOUT

R-Counter

(5-bit)

CLK

Programming

Logic

OE, PDB,

FSEL, CLK1

XTAL

OSC

M-Counter

(8-bit)

P-Counter

(14-bit)

Programmable

CLoad

Programmable Function