SY58603/4/5U Evaluation Board SY58603U, SY58604U, SY58605U evalua
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Precision CML/LVPECL/LVDS Buffer with Internal Termination Fail Safe Input
SY58603/4/5U Evaluation Board
SY58603U, SY58604U, SY58605U evaluation boards designed convenient setup quick evaluation respective devices. They allow user evaluate part over full voltage-range part without requiring modifications board. board optimized interface directly oscilloscope. board designed multiple layers better performance simple signal evaluation. best performance, board configured AC-coupled AC-coupled configuration. applications that require DC-coupled configuration, step-by-step instructions modifying board included. data sheets support documentation found Micrel's site www.micrel.com.
Features
SY58603U outputs SY58604U LVPECL outputs SY58605U LVDS outputs +2.5V 3.3V power supply AC-coupled configuration ease-of-use interface includes on-board termination Fully assembled tested reconfigured DC-coupled operation
Related Documentation
SY58603U, 4.25Gbps Precision Buffer with Internal Termination Fail-Safe Inputs SY58604U, 4.25Gbps Precision LVPECL Buffer with Internal Termination Fail-Safe Inputs
SY58605U, 4.25Gbps Precision LVDS Buffer with Internal Termination Fail-Safe Inputs
Evaluation Board
Micrel Inc. 2180 Fortune Drive Jose, 95131 (408) 944-0800 (408) 474-1000 http://www.micrel.com
September 2006
M9999-091806-A hbwhelp@micrel.com (408) 955-1690
Micrel, Inc.
SY58603/4/5U Evaluation Board -2.5V. 3.3V configuration board -3.3V. This allows body connectors, which scope GND, appear same potential output drivers. SY58604U DC-Coupled Evaluation Boards DC-coupled operation, boards modified power supplies "split-supply configuration." term split-supply simply means +3.3V supply split into -1.3V, +2.5V supply split into -0.5V power supply configuration. This effectively offsets board +2V. offset this two-power supply configuration then provides correct terminations device setting Ground potential board exactly volts below supply. voltage then -1.3V 3.3V devices -0.5V 2.5V devices device power pins still full 3.3V 2.5V potential between VEE. SY58605U DC-Coupled Evaluation Boards DC-coupled operation accomplished modifying board power supplies into "split-supply configuration". order correctly interface LVDS 50-(to-ground) scope, must VOCM above level. Therefore, 2.5V supply will split into +1.2V -1.3V ensure ensure proper voltage difference. Step-by-step instructions modifying AC-coupled evaluation board DC-coupled operation supplied section "Modifying your AC-coupled Board DCCoupled Operation".
Evaluation Board Description
SY58603U, SY58604U, SY58605U share common evaluation board. individual evaluation boards labeled identify specific device configuration, that board. SY58603U, SY58604U, SY58605U CML, LVPECL, LVDS output evaluation boards respectively. default configuration boards ACcoupled configuration boards shipped with this configuration. choice between configurations offers user flexibility selecting board that right this particular application. AC-Coupled Evaluation Board AC-coupled configuration suited most customer applications preferred majority users because ease-of-use. requires only single power supply offers most flexibility interfacing variety signal sources. DC-bias levels AC-coupling capacitors supplied on-board each input. user only needs supply minimum input voltage swing bias voltage will automatically adjust input correct level power supply voltage varies. DC-Coupled Evaluation Board SY58603U DC-Coupled Evaluation Boards allow outputs used DC-coupled configuration with scope that standard termination, power supplies configured offset voltage evaluation board negative. 2.5V configuration board
September 2006
M9999-091806-A hbwhelp@micrel.com (408) 955-1690
Micrel, Inc.
SY58603/4/5U Evaluation Board
Evaluation Board
SY58603U AC-Coupled Evaluation Board
SY58603U DC-Coupled Evaluation Board AC-Coupled Input/AC-Coupled Output AC-Coupled Input/AC-Coupled Output AC-Coupled Input/DC-Coupled Output AC-Coupled Input/DC-Coupled Output Power Supply 2.5V 3.3V 2.5V 3.3V +2.5V +3.3V -2.5V -3.3V
Table SY58603U AC/DC-Coupled Evaluation Board Power Supply Connection
September 2006
M9999-091806-A hbwhelp@micrel.com (408) 955-1690
Micrel, Inc.
SY58603/4/5U Evaluation Board
Evaluation Board
SY58604U AC-Coupled Evaluation Board
SY58604U DC-Coupled Evaluation Board AC-Coupled Input/AC-Coupled Output AC-Coupled Input/AC-Coupled Output AC-Coupled Input/DC-Coupled Output AC-Coupled Input/DC-Coupled Output Power Supply 2.5V 3.3V 2.5V 3.3V +2.5V +3.3V 2.0V 2.0V -0.5V -1.3V
Table SY58604U AC/DC-Coupled Evaluation Board Power Supply Connections
September 2006
M9999-091806-A hbwhelp@micrel.com (408) 955-1690
Micrel, Inc.
SY58603/4/5U Evaluation Board
Evaluation Board
SY58605U AC-Coupled Evaluation Board
SY58605U DC-Coupled Evaluation Board
AC-Coupled Input/AC-Coupled Output AC-Coupled Input/DC-Coupled Output
Power Supply 2.5V 2.5V
+2.5V 1.2V
-1.3V
Table SY58605U AC/DC-Coupled Evaluation Board Power Supply Connections
September 2006
M9999-091806-A hbwhelp@micrel.com (408) 955-1690
Micrel, Inc.
SY58603/4/5U Evaluation Board Using differential signal source, amplitude each side differential pair 800mV (1600mV measured differentially). Turn disable outputs signal source. Using equal length impedance coaxial cables, connect signal source inputs evaluation board. Using equal length impedance coaxial cables, connect outputs evaluation board oscilloscope other measurement device that internal termination. Turn power supply verify current <70mA. Enable signal source monitor outputs.
AC-Coupled Evaluation Board Setup
Setting SY58603/4/5U AC-Coupled Evaluation Board following steps describe procedures setting evaluation board: voltage setting supply either 2.5V 3.3V (2.5V SY58605U) depending upon your application turn supply. evaluation board short terminal terminal connect them negative side power supply. Connect terminal positive side power supply. Turn power supply verify that poser supply current <70mA Turn power supply
September 2006
M9999-091806-A hbwhelp@micrel.com (408) 955-1690
Micrel, Inc.
SY58603/4/5U Evaluation Board Enable signal source monitor outputs. SY58604U: voltage supply number 2.0V connect VCC. voltage supply number -1.3V -0.5V 2.5V application) connect VEE. Connect negative side power supply positive side power supply This ground potential board. Turn power supplies connect terminal board, negative side power supply positive side power supply Using voltmeter, turn power supply verify that power supply current <80mA. Turn power supply. Using differential signal source amplitude each side differential pair 800mV (1600mV measured differentially). offset critical, AC-coupled inputs will automatically biased correct offset. Turn disable outputs signal source. Using equal length impedance coaxial cables, connect outputs evaluation board oscilloscope other measurement device that internal termination. these outputs that connected scope, other instrument should terminated with termination-to-ground board. Turn power verify current <80mA. Enable signal source monitor outputs. SY58605U: voltage supply number 1.3V connect VCC. voltage supply number -1.2V connect VEE. Connect negative side power supply positive side power supply This ground potential board. Turn power supplies connect terminal board, negative side power supply positive side power supply Using voltmeter, turn power supply verify that power supply current <80mA.
M9999-091806-A hbwhelp@micrel.com (408) 955-1690
Modifying AC-Coupled DC-Coupled Operation
When DC-Coupling Necessary applications where AC-coupling appropriate, board reconfigured DC-coupled operation. Reconfiguring AC-Coupled Board into DCCoupled Board following procedure details steps converting AC-coupled board DC-coupled board: SY58603U: Replace capacitors with resistors. SY58604U: Replace capacitors with resistors. Remove SY58605U: Replace capacitors with resistors. DC-Coupled Evaluation Board Setup following steps describe procedure setting DC-coupled evaluation board: SY58603U: voltage supply 3.3V 2.5V based your application). Short Connect positive side power supply VCC. This ground potential board. Turn power supply connect negative side power supply VEE. Using voltmeter, turn power supply verify that power supply current <70mA. Turn power supply. Using differential signal source amplitude each side differential pair 400mV (800mV measured differentially). offset critical, AC-coupled inputs will automatically biased correct offset. Turn disable outputs signal source. Using equal length 50-impedance coaxial cables, connect outputs evaluation board oscilloscope other measurement device that internal termination. these outputs that connected scope other instrument should terminated with 50-termination-to-ground board. Turn power verify current <80mA. September 2006
Micrel, Inc. Turn power supply. Using differential signal source amplitude each side differential pair 325mV (650mV measured differentially). offset critical, AC-coupled inputs will automatically biased correct offset. Turn disable outputs signal source. Using equal length impedance coaxial cables, connect outputs evaluation board oscilloscope other measurement device that internal termination. these outputs that connected scope, other instrument should terminated with termination-to-ground board. Turn power verify current <80mA. Enable signal source monitor outputs.
SY58603/4/5U Evaluation Board
Evaluation Board Layout
Board Layout evaluation board constructed with Rogers 4003 material coplanar design; fabricated minimize noise, achieve high bandwidth minimize crosstalk.
Signal/GND Impedance Power/VEE Power Signal/GND Table Layer Stack
September 2006
M9999-091806-A hbwhelp@micrel.com (408) 955-1690
Micrel, Inc.
SY58603/4/5U Evaluation Board
Bill Materials
Item C3-C7, J1-J3 SMA1SMA4
Notes: Vishay: www.vishay.com. Johnson Components: www.johnsoncomponents.com. Micrel, Inc.: www.micrel.com.
Part Number 293D685X06R3A VJ0402Y104KXXAT CRCW04021000F 111-0703-001 142-0701-851 SY58603U SY58604U SY58605U
Manufacturer Vishay Vishay
Description 6.8µF, 20V, Tantalum Electrolytic Capacitor, Size 0.1µF, 25V, Ceramic Capacitor, Size 0402, Dielectric 100, Resistor, Size 0402 Banana Jack Jack Assembly Launch 4.25Gbps Precision Buffer with Internal Termination Fail Safe Input 3.2Gbps Precision LVPECL Buffer with Internal Termination Fail Safe Input 3.2Gbps Precision LVDS Buffer with Internal Termination Fail Safe Input
Qty.
Vishay(1) Johnson
Johnson(2) Micrel, Inc.(3) Micrel, Inc.(3) Micrel, Inc.(3)
September 2006
M9999-091806-A hbwhelp@micrel.com (408) 955-1690
Micrel, Inc.
SY58603/4/5U Evaluation Board
Support
Hotline: 408-955-1690 Email Support: HBWHelp@micrel.com
Application Hints Notes
application notes high-speed termination PECL LVPECL products, clock synthesizer products, SONET jitter measurement, other High Bandwidth products Micrel's website http://www.micrel.com/. Once Micrel's website, follow steps below: Click "Product Info." Applications Information Box, choose "Application Hints Application Notes."
MICREL, INC. 2180 FORTUNE DRIVE JOSE, 95131
(408) 944-0800 (408) 474-1000 http://www.micrel.com
information furnished Micrel this data sheet believed accurate reliable. However, responsibility assumed Micrel use. Micrel reserves right change circuitry specifications time without notification customer. Micrel Products designed authorized components life support appliances, devices systems where malfunction product reasonably expected result personal injury. Life support devices systems devices systems that intended surgical implant into body support sustain life, whose failure perform reasonably expected result significant injury user. Purchaser's sale Micrel Products life support appliances, devices systems Purchaser's risk Purchaser agrees fully indemnify Micrel damages resulting from such sale. 2006 Micrel, Incorporated.
September 2006
M9999-091806-A hbwhelp@micrel.com (408) 955-1690
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