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MICREL

SM840001 Datasheet Preview

SM840001 Datasheet

106.25MHz Ultra-Low Jitter Clock Synthesizer

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SM840001
106.25MHz Ultra-Low Jitter Clock
Synthesizer
General Description
The SM840001 synthesizer series were designed for Fibre
Channel applications. The device design is optimized for
106.25MHz or 212.5MHz using a 26.5625MHz
fundamental parallel resonant crystal, with stability and
accuracy over the full operating range. The SM840001
includes a unique power reduction methodology, along
with a patented RotaryWaveTM architecture, that provides
a stable clock with very low noise for optimized
performance. This yields an overall improved Bit Error
Rate (BER) and improved waveform integrity.
Datasheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
Features
Generates a single LVCMOS/LVTTL output
Integrated loop filter components
RMS Phase Jitter:
- 510 fs (typ) at 106.25MHz
- 320 fs (typ) at 212.50MHz
Operates with either a 3.3V or 2.5V supply
Power consumption is <77mA @ 3.3 V
Fundamental crystal oscillator interface
Input frequency of 26.5625 MHz parallel resonant
Selectable output frequency: 106.25MHz or 212.5MHz
Temperature range: –40°C to +75°C
Available in 8-pin TSSOP package
Applications
Fibre Channel
Storage
___________________________________________________________________________________________________________
Block Diagram
www.DataSheet4U.com
RotaryWave is a trademark of Multigig, 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
March 2010
M9999-031810-B
hbwhelp@micrel.com or (408) 955-1690




MICREL

SM840001 Datasheet Preview

SM840001 Datasheet

106.25MHz Ultra-Low Jitter Clock Synthesizer

No Preview Available !

Micrel, Inc.
Ordering Information(1)
Part Number
SM840001KA
SM840001KA TR(2)
Package
Type
K-8
K-8
Operating Range
-40°C to +75°C
-40°C to +75°C
Note:
1. Devices are Green, RoHS-compliant and PFOS-compliant.
2. Tape and Reel.
SM840001
Package Marking Lead Finish
840001
840001
NiPdAu
NiPdAu
Pin Configuration
8-Pin TSSOP (K-8)
Pin Description
Pin Number
1
2
3
4
5
6
7
8
Pin Name
VDDA
OE
XTAL OUT
XTAL IN
FSEL
GND
Q0
VDD
Type
P
I
O
I
I
P
O
P
Frequency Select Table
FSEL
0
1
Output (MHz)
106.25 (Default)
212.5
Output Enable
www.DataSheetO4UE.com
0
1
Output
Disable
Enable
Level
Pull-up
Pull-down
Pin Function
Analog Power.
Output Enable: 1 = Enable, 0 = Disable.
Crystal Out.
Crystal Input.
Frequency Select Pin.
Ground.
Single Ended LVCMOS Clock Out.
Core Power.
March 2010
2 M9999-031810-B
hbwhelp@micrel.com or (408) 955-1690


Part Number SM840001
Description 106.25MHz Ultra-Low Jitter Clock Synthesizer
Maker MICREL
PDF Download

SM840001 Datasheet PDF






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