MX85xxxx235.51 KB

MX85xxxx Family
Complete Clocking Solution with
Integrated Crystal, Synthesizer, and Fanout
ClockWorks™ Fusion
General Description
Features
Micrel’s MX85xxxx family of parts are ultra-low phase
noise clocking solutions that integrate the crystal,
synthesizer, and fanout buffers, providing up to two
frequencies from a single 5mm × 7mm LGA package.
Integrating the entire clock chain means that 162fs jitter
performance includes fanout and crosstalk. The MX85xxxx
family offers a series of crystal frequency options that
generate
commonly-required
Ethernet,
storage,
telecommunications, and computing clock frequencies up
to 840MHz. Configuring the MX85xxxx parts using OTP
options, a variety of output frequencies are available.
Optimized for applications that require performance,
reliability, and high integration, the MX85xxxx family
delivers the complete clocking chain from crystal to fanout
buffer.
Data sheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
 Complete ultra-low jitter clocking solution
 Highly integrated, includes crystal and fanout buffers
 Ultra-low 162fs jitter, including fanout buffer
(156MHz output frequency, 12kHz to 20MHz
integration bandwidth, including crosstalk)
 Two output frequencies up to 840MHz
 Supports LVPECL, LVDS, HCSL, and CMOS outputs
 Integrated power supply noise reduction and
frequency select
 Independent OE and VDDO per output bank
 ±50ppm total stability option (includes aging)
 40C to 85C temperature range option
 Available in compact 5mm × 7mm LGA package
Applications





10/40/100 Gigabit Ethernet
Fibre Channel, SAS/SATA
Networking, computing, servers, PCI Express 2.0/3.0
Telecom
Wireless infrastructure
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Functional Block Diagram
ClockWorks is a trademark 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
November 2012
M9999-110912-A
[email protected] or (408) 955-1690
Micrel, Inc.
MX85xxxx Family
Ordering Information
Part Number(1)
Shipping
Package
MX85xxxxxxTA
Tube
38-Pin 5mm × 7mm LGA
MX85xxxxxxRA
Tape and Reel
38-Pin 5mm × 7mm LGA
Note:
1.
Insert custom code into “xxxxxx”. Contact Micrel for details regarding exact configurations, options, and part numbers available.
Standard Frequencies(2)
Part Number
Frequencies (MHz)
MX852Axxxxx
26.041666, 52.08333, 78.125, 104.1666, 130.20833, 156.25, 208.33333, 260.41666, 312.5,
390.625, 520.83333, 625, 781.25
MX852Exxxxx
25, 50, 75, 100, 125, 150, 175, 200, 225, 250, 275, 300, 325, 350, 375, 400, 425, 450, 475, 500,
525, 550, 575, 600, 625, 650, 675, 725, 750, 775, 800, 825
MX852Cxxxxx
26.5625, 53.125, 106.25, 132.81250, 159.375, 212.5, 318.75, 425, 531.25
Note:
2.
Optimal frequencies. Additional output frequencies are available. Contact Micrel for more frequency options.
Pin Configuration
38-Pin 5mm × 7mm LGA
Top View
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Micrel, Inc.
MX85xxxx Family
Absolute Maximum Ratings(1)
Operating Ratings(2)
Supply Voltage (VDDA, VDD, VDDO)................................+4.6V
Input Voltage (VIN). ............................... 0.50V to VDD+0.5V
Lead Temperature (soldering, 20s)............................ 260°C
Storage Temperature (Ts) .........................65°C to +150°C
Supply Voltage (VDDOX, VDD, VDDA) ....... +2.375V to +3.465V
Ambient Temperature (TA) .......................... –40°C to +85°C
Electrical Characteristics(4)
VDD = VDDO_A = VDDO_B = 3.3V ±5%, or 2.5V ±5%
VDD = 3.3V ±5%, VDDO_A = VDDO_B = 3.3V ±5%, or 2.5V ±5%
TA = –40°C to +85°C, unless noted.
Symbol
VDDX
Min.
Typ.
Max.
Units
2.5V Operating Voltage
Parameter
2.375
2.5
2.625
V
3.3V Operating Voltage
3.135
3.3
3.465
V
IDD
Core Supply Current
F0
Frequency Range
FSTABILITY
Frequency Stability(5)
tSTART
Start-Up Time
Condition
Outputs not loaded
VDDO_A output bank
VDDO_B output bank
90
12
840
Frequency stability over temperature
±20
Total stability
±50
(6)
tSKEW
Output-to-Output Skew
tJIT()
RMS Phase Jitter Including Crosstalk
All outputs active, LVPECL
mA
156.25MHz (12kHz to 20MHz)
162
156.25MHz (1.875MHz to 20MHz)
73
312.5MHz (12kHz to 20MHz)
227
MHz
ppm
20
ms
45
ps
fs
Notes:
1.
Permanent device damage may occur if absolute maximum ratings are exceeded. This is a stress rating only and functional operation is not implied
at conditions other than those detailed in the operational sections of this data sheet. Exposure to absolute maximum rating conditions for extended
periods may affect device reliability.
2.
The data sheet limits are not guaranteed if the device is operated beyond the operating ratings.
3.
Package thermal resistance assumes exposed pad is soldered (or equivalent) to the devices most negative potential on the PCB.
4.
The circuit is designed to meet the DC specifications shown in the above table after thermal equilibrium has been established (configuration
dependent). Contact Micrel for details.
5.
Inclusive of temperature drift, aging, initial accuracy, shock, and vibration. Operating temperature range dependent on part number configuration.
6.
Skew between output buffers. Measured at the output differential crossing points. Applies to outputs at the same supply voltage using same output
format.
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MX85xxxx Family
Phase Noise Plots
Figure 1. LVPECL Output (156.25MHz), 12kHz20MHz Integration Bandwidth, 162fs Jitter, All Outputs Active
Figure 2. LVPECL Output (156.25MHz), 1.875MHz20MHz Integration Bandwidth, 73fs Jitter, All Outputs Active
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MX85xxxx Family
Phase Noise Plots (Continued)
Figure 3. LVPECL Output (312.5MHz), 12kHz20MHz Integration Bandwidth, 227fs Jitter, All Outputs Active
November 2012
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Micrel, Inc.
MX85xxxx Family
Package Information(1)
38-Pin 5mm × 7mm LGA (MM)
Note:
1.
Package information is correct as of the publication date. For updates and most current information, go to www.micrel.com.
November 2012
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M9999-110912-A
[email protected] or (408) 955-1690
Micrel, Inc.
MX85xxxx Family
MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA
TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http://www.micrel.com
Micrel makes no representations or warranties with respect to the accuracy or completeness of the information furnished in this data sheet. This
information is not intended as a warranty and Micrel does not assume responsibility for its use. Micrel reserves the right to change circuitry,
specifications and descriptions at any time without notice. No license, whether express, implied, arising by estoppel or otherwise, to any intellectual
property rights is granted by this document. Except as provided in Micrel’s terms and conditions of sale for such products, Micrel assumes no liability
whatsoever, and Micrel disclaims any express or implied warranty relating to the sale and/or use of Micrel products including liability or warranties
relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright or other intellectual property right.
Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product
can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical
implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A
Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully
indemnify Micrel for any damages resulting from such use or sale.
© 2012 Micrel, Incorporated.
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