SY87739LHI-EVAL Micrel Inc, SY87739LHI-EVAL Datasheet

BOARD EVAL N SY87739 EXPERIMENT

SY87739LHI-EVAL

Manufacturer Part Number
SY87739LHI-EVAL
Description
BOARD EVAL N SY87739 EXPERIMENT
Manufacturer
Micrel Inc
Datasheets

Specifications of SY87739LHI-EVAL

Main Purpose
Timing, Frequency Synthesizer
Embedded
No
Utilized Ic / Part
SY87739
Primary Attributes
Single Integer-N PLL
Secondary Attributes
729MHz, Graphical User Interface, PECL Inputs and Outputs, 3.3V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
576-1406
SY87739L-EVAL
Micrel, Inc.
AnyClock and AnyRate are registered trademarks of Micrel, Inc.
MicroWire is a trademark of National Semiconductor.
M9999-062807
hbwhelp@micrel.com or (408) 955-1690
V
FEATURES
APPLICATIONS
TYPICAL APPLICATIONS CIRCUIT
CC
27.0000MHz
Protocol transparent fractional-N synthesizer from
10MHz to 729MHz from a single 27MHz reference
oscillator
Generates exactly the correct frequency for common
transport protocols with or without FEC
Directly enables SY87721L CDR to lock onto any
data rate within its range
Exceeds BellCore and ITU jitter generation
specifications
Programmable via MicroWire™ interface
Available in 32-Pin EPAD-TQFP package
Metro access system
Transponders
Multiplexers: access, Add Drop Mux
SONET/SDH/ATM-based transmission systems,
modules and test equipment
Broadband cross-connects
Fiber optic test equipment
Protocols supported:
OC-1, OC-3, OC-12, OC-48, ATM, Gigabit Ethernet,
Fast Ethernet, Fibre Channel, 2X Fibre Channel,
1394, InfiniBand, Proprietary Optical Transport
SEL-2431C
14
7
Saronix
121
8
1
121
V
CC
3
4
REFCLK+
REFCLK-
2k
1, 9, 17, 18, 24
31
SY87739L
0.1µF
30
10, 25, 32
2k
Microcontroller
CLKOUT+
6
26
CLKOUT-
7 8 14
0.1µF
25
PROTOCOL TRANSPARENT
3.3V 10MHz to 729MHz
FRACTIONAL-N SYNTHESIZER
22
21
121
121
1
synthesizer integrated circuit. From a single reference
source, this device generates a differential PECL output
frequency from 10MHz up to 729MHz.
frequency for common data transport protocols. This is
especially important in transponder applications, where a
standards compliant protocol data unit must be generated
downstream, even in the absence of any signal from the
associated upstream interface. In addition, the SY87739L
will generate exactly correct reference frequencies for
common data transport protocols augmented by forward
error correction codes. The SY87739L accepts configuration
via a MicroWire™ interface.
reference frequencies guaranteed to enable the SY87721L
CDR to lock to any possible baud rate from 28Mbps to
2.7Gbps.
DESCRIPTION
TYPICAL PERFORMANCE
The SY87739L is a complete rate independent frequency
The SY87739L generates an exactly correct reference
For proprietary applications, the SY87739L generates
6
5
4
3
2
1
0
0 100 200 300 400 500 600 700 800
OUTPUT FREQUENCY (MHz)
Cycle-to-Cycle Jitter
vs. Frequency
Rev.: E
Issue Date: June 2007
SY87739L
Amendment: /0
SY87739L

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SY87739LHI-EVAL Summary of contents

Page 1

Micrel, Inc. FEATURES Protocol transparent fractional-N synthesizer from 10MHz to 729MHz from a single 27MHz reference oscillator Generates exactly the correct frequency for common transport protocols with or without FEC Directly enables SY87721L CDR to lock onto any data rate ...

Page 2

... Contact factory for die availability. Dice are guaranteed Tape and Reel. 3. Pb-Free package is recommended for new designs SY87739L Package Marking Finish SY87739LHI Sn-Pb SY87739LHI Sn-Pb SY87739LHY with Matte-Sn Pb-Free bar line indicator Pb-Free SY87739LHY with Matte-Sn Pb-Free bar line indicator Pb-Free = 25°C, DC Electricals only. A ...

Page 3

Micrel, Inc. Absolute Maximum Ratings Supply Voltage (V ) ................................... –0.5V to +4.0V CC Input Voltage(V ) ....................................... –0. ECL Output Current (I ) OUT Continuous .......................................................... 50mA Surge .................................................................100mA Lead Temperature (soldering, 20 sec.) ...................... 260°C ...

Page 4

Micrel, Inc. AC ELECTRICAL CHARACTERISTICS 3.3V ±5%; GND = GNDA = 0V CCO CCA Symbol Parameter t REFCLK Input Rise/Fall Times IRF t REFCLK Pulse Width High REFPWH t REFCLK Pulse Width ...

Page 5

Micrel, Inc. FUNCTIONAL DESCRIPTION General The SY87739L AnyClock™ Fractional-N Synthesizer is used in serial data streaming applications, where the incoming data rate on a channel may vary, or where the incoming data rate on a channel is unknown ahead of ...

Page 6

Micrel, Inc Figure 2. 11/3 Example Figure 2 shows an example generating an output 2 frequency 3 / times the input frequency. Since the output 3 frequency is between 3 and ...

Page 7

Micrel, Inc. Fractional-N Control This circuit controls the P/P–1 divider, selecting the appropriate divide ratio, either P or P–1, in the correct pattern. As explained in the example of Figure 2 above, controlling the P/P–1 divider amounts to generating a ...

Page 8

Micrel, Inc. the same coarse adjustment voltage, and so both center nominally at the same frequency. An 8-bit counter implements the voltage steps. The acquisition sequencer steps through this counter, which changes its voltage by about 12mV per step. The ...

Page 9

Micrel, Inc. NdivSel2 NdivSel1 NdivSel0 Table 4. NdivSel Divisor Control P Divider The output of the wrapper synthesizer is post divided down before appearing ...

Page 10

Micrel, Inc. Standard Protocol Applications From a single 27.000MHz reference input, the SY87739L can generate exactly correct frequencies for at least the 18 protocols listed in Table 7. This table also shows how to Protocol SY87739L Fout (MHz) ETR OC-1 ...

Page 11

Micrel, Inc. SYSTEM BLOCK DIAGRAM FIBER PIN DIODE TIA REF_OSC SY889x2 FIBER LASER LASER DIODE DIODE DRIVER M9999-062807 hbwhelp@micrel.com or (408) 955-1690 SY889x3 SY87721L AnyRate POST AMP CDR SY87739L CMU One REF_CLK AnyClock® Fractional-N Synthesizer 8 bits P 11 SY87724L ...

Page 12

Micrel, Inc. FUNCTIONAL BLOCK DIAGRAM Center Frequency Trim REFCLK Phase- Frequency Detector Fractional-N Control M Divider PROGCS MicroWire™ PROGDI Interface PROGSK Aquisition Sequencer RELATED PRODUCT AND SUPPORT DOCUMENTATION Part Number Function SY87739L-EVAL Fractional-N Synthesizer Evaluation Board M9999-062807 hbwhelp@micrel.com or (408) ...

Page 13

Micrel, Inc. 32-PIN EPAD-TQFP 7mm X 7mm (DIE UP) (H32-2) Heat Dissipation PCB Thermal Consideration for 32-Pin EPAD-TQFP Package MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA + 1 (408) 944-0800 TEL The information furnished by Micrel in ...

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