PL904xxx

Revision 1.0

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

September 11, 2015

Revision 1.0

tcghelp@micrel.com or (408) 955-1690

General Description

The

PL904xxx

series

is

a

small

form-factor,

high

performance, programmable device and a member of

Micrel’s

JitterBlocker

factory

programmable

jitter

attenuators.

The

JitterBlocker

product

family

cleans

deterministic jitter by attenuating spurious components in

the phase noise, thereby improving the phase jitter and the

overall phase noise. The PL904xxx is capable of reducing

multiple pico seconds of phase jitter in a clock to a level

for many more applications.

The PL904xxx operates on a single 2.5V or 3.3V supply

and is housed in a small QFN package for a broad range

of applications.

Input clock frequencies up to 250MHz can be filtered and

frequency translation allows for output clock frequencies

up to 850MHz. The input clock can be single-ended or

differential.

Datasheets and support documentation are available on

Micrel’s web site at: www.micrel.com.

Block Diagram

Features

• Input frequency up to 250MHz

• Output frequency up to 850MHz

• Programmable input type, differential or single-ended

• Up to two outputs with LVPECL, LVDS, HCSL, or

LVCMOS logic types

• Output enable control for each output

• Jitter attenuation of 20db at 3MHz spur frequency

• Cleans up spurs to below 0.5ps

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

• Available in 32-pin QFN GREEN/RoHS-compliant

package

• Related devices:

− PL902: LVCMOS, Period Jitter cleaning

− PL903: Single ended input, one differential output,

Phase Noise cleaning

Applications

• 1/10/40/100 Gigabit Ethernet (GbE)

• SONET/SDH

• PCI Express

• CPRI/OBSAI wireless base stations

• Fibre Channel

• SAS/SATA

• DIMM