SM803081UMGTR datasheet, PDF - EEWORLD Datasheet

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SM803081UMGTR: DescriptionIC,FREQUENCY SYNTHESIZER,LLCC,48PIN,PLASTIC; CategoryAnalog mixed-signal IC The signal circuit; File Size932KB，19 Pages; ManufacturerMicrochip; Websitehttps://www.microchip.com; Environmental Compliance

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SM803081UMGTR Overview

IC,FREQUENCY SYNTHESIZER,LLCC,48PIN,PLASTIC

SM803081UMGTR Parametric

Parameter Name	Attribute value
Is it Rohs certified?	conform to
Maker	Microchip
package instruction	QCCN, LCC48,.27SQ,20
Reach Compliance Code	compliant
JESD-30 code	S-PQCC-N48
Number of terminals	48
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Package body material	PLASTIC/EPOXY
encapsulated code	QCCN
Encapsulate equivalent code	LCC48,.27SQ,20
Package shape	SQUARE
Package form	CHIP CARRIER
power supply	2.5/3.3 V
Certification status	Not Qualified
Maximum supply current (Isup)	280 mA
surface mount	YES
Temperature level	INDUSTRIAL
Terminal form	NO LEAD
Terminal pitch	0.5 mm
Terminal location	QUAD
Base Number Matches	1

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SM803XXX

Flexible Ultra-Low Jitter Clock Synthesizer

Clockworks™

FLEX2

General Description

The SM803xxx is a dual-PLL clock generator that achieves

ultra-low phase jitter (75fs RMS). With 12 total outputs and

dividers on each output, this device can generate 12

different frequencies up to 850MHz, from a low-cost quartz

crystal or a reference clock input.

Each of 12 outputs can be independently programmed to

LVPECL, LVDS, HCSL, or LVCMOS logic. For LVCMOS,

only the true side of the channel is used.

The SM803xxx is packaged in a 48-pin QFN with up to 10

outputs, or 84-pin QFN with 12 outputs.

Datasheets and support documentation are available on

Micrel’s web site at:

www.micrel.com.

Features

•

Generates up to 12 differential or single-ended

frequencies

•

75fs phase jitter @ 156.25MHz (1.875MHz to 20MHz)

•

180fs phase jitter @ 156.25MHz (12kHz to 20MHz)

•

On-chip power supply regulation for excellent power

supply noise immunity

•

Two high-performance PLL synthesizers to generate

multiple frequencies

•

Independently programmable output logic and

frequency:

−

Output logic: LVPECL, LVDS, HCSL, LVCMOS

•

Selectable input:

−

Crystal: 12MHz to 50MHz

−

Reference input: 12MHz to 850MHz

•

SPI programmable (see FLEX SPI documentation)

•

No external crystal oscillator capacitors required

•

2.5V or 3.3V operating power supply

•

Separate output power supplies:

−

Each bank can be at different power supply voltage

levels (4 banks of 3 outputs each)

•

Feedback input pins for use as zero delay buffer

•

Industrial temperature range,

−40°C

to +85°C

•

Green, RoHS, and PFOS compliant QFN packages:

−

84-pin, 7mm × 7mm (12 Diff. or Single ended outputs)

−

48-pin 7mm × 7mm (10 Diff. or Single ended outputs)

Block Diagram

Applications

•

1/10/40/100 Gigabit Ethernet – (GbE)

SONET/SDH

PCI-Express

CPRI/OBSAI – Wireless base station

Fibre Channel

SAS/SATA

DIMM (DDR2/DDR3/AMB)

Clockworks and Ripple Blocker are trademarks of Micrel, Inc.

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

http://www.micrel.com

July 26, 2013

Revision 1.0

hbwhelp@micrel.com

or (408) 955-1690

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