0.5kHz-55MHz MHz to KHz Programmable Clock

TM

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

FEATURES

• Designed for Very Low-Power applications

o

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

o

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

o

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

• Input Frequency:

o

Reference Input: 1MHz to 200MHz

o

Non PLL mode, Ref input down to 10kHz

• Accepts >0.1V reference signal input voltage

• Output frequency up to 55MHz 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

Power Down (PDB) input, output Enable (OE), or

Frequency Selection Switching input.

• Disabled outputs programmable as HiZ or Active Low.

• 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-19 is a low-cost general purpose

frequency synthesizer and a member of PhaseLink’s

Factory Programmable ‘Quick Turn Clock (QTC)’

family. PhaseLink’s PL611s-19 offers the versatility

of using a single Reference Clock input and

producing up to two (kHz or MHz) system clock

outputs. Designed for low-power applications with

very stringent space requirement, PL611s-19

consumes <1.0mA, while producing 2 distinct

outputs of 27MHz and 32kHz. The power down

feature of PL611s-19, when activated, allows the IC

to consume less than 5 A of power.

PL611s-19 fits in a small DFN, SC70, or SOT23

package. Cascading of the PL611s-19 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 Power Down (PDB) input, Output

Enable (OE), or Frequency switching (FSEL). CLK1

BLOCK DIAGRAM

Phase

Detector

Charge

Pump

Loop

Filter

VCO

FIN

R-Counter

(5-bit)

CLK [0:1]

Programming

Logic

OE, PDB, FSEL

M-Counter

(8-bit)

P-Counter

(14-bit)

Programmable Function