SY88982L Evaluation Board SY88982L evaluation board designed fast

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SY88982L Evaluation Board SY88982L evaluation board designed fast

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2.5Gbps FP/DFB Laser Drivers
SY88982L Evaluation Board
SY88982L evaluation board designed fast evaluation SY88982L, SY88782L, SY88932L laser drivers. picture board loaded with SY88982L shown below. data sheets support documentation found Micrel's site www.micrel.com.
Features
Single 3.3V supply voltage AC-coupled inputs AC/DC-coupled outputs Positive ground allow DC-coupling outputs test equipment. AC/DC compliance voltage evaluation
Related Documentation
SY88982L, 3.3V, 2.7Gbps High Current Power Laser Driver FP/DFB Lasers
Evaluation Board
Micrel Inc. 2180 Fortune Drive Jose, 95131 (408) 944-0800 (408) 474-1000 http://www.micrel.com
April 2005
M9999-041505 hbwhelp@micrel.com (408) 955-1690
Micrel, Inc.
SY88982L Evaluation Board
Evaluation Board Description Setting
evaluation board consists four-layer board. inputs driver AC-coupled accessible through connectors. board positive ground (VCC ground) that will allow coupling scope needed. There power supply connectors board, (Ground) (VCC2) used compliance voltage measurement only. Board Setting Jumper installed JP1. make load when scope connected J3-4. Board Operation connectors, J1-J2, connect signal driver's inputs. J3-J4 driver's outputs, connected scope. Install jumper normal operation. Connect power supply between (VCC1) (VEE). (VCC2) connected normal operation reserved AC-compliance voltage measurement. Adjust modulation current with potentiometer modulation current measured with following methods: Measure output swing scope divide load board comes with load Measure IM_SET voltage (central pin) potentiometer (R4) modulation gain curve below deduce IMOD.
Compliance Voltage Measurement
Remove jumper from apply separate 3.3V variable voltage source (VCC2) TP5. modulation current value between 10mA 90mA. currents more than 70mA, lower load, example //scope), must used avoid saturation driver's output. Apply valid signal input driver clean output (MOD-), than decrease VCC2 slowly until MOD- starts degrade. Record value VCC2 (VCC2_sat) just before starts degrade (the driver starts saturate). compliance voltage voltage VMOD-_sat MOD- given VMOD-_sat VCC2_sat)/(R1+50) IMOD R1/(R1+50). Where scope input impedance. Modulation Current Measurement board back normal operation disconnecting installing jumper JP1. Connect disable driver. Measure modulation current using methods described above (board operation section).
Figure Example Diagram 2.5Gbps with load
Figure Modulation Gain IM_SET
April 2005
M9999-041505 hbwhelp@micrel.com (408) 955-1690
Micrel, Inc.
SY88982L Evaluation Board
Evaluation Board Schematic
April 2005
M9999-041505 hbwhelp@micrel.com (408) 955-1690
Micrel, Inc.
SY88982L Evaluation Board
Bill Materials
Item C1-C4 C5-C7 C8-C12 J1-J4 TP3, TP1,
Notes: Panasonic: www.panasonic.com. Vishay: www.vishay.com. Johnson Components: www.johnsoncomponents.com. Samtec: www.samtec.com. Bourns: www.bourns.com. Keystone: www.keystone.com. Micrel, Inc.: www.micrel.com.
Part Number ECSH0GY106R VJ0603Y683KXXA VG0402G104KXQ 142-0711-821 TSW-1-4-07-G-S 0805 CRCW040249R9F 3269 CRCW040200R0F TSW-1-1-07-G-S 5010 5011 SY88982L
Manufacturer Panasonic Vishay Vishay
Description 10µF, Tantalium Solid Electrolytic Capacitor 0.1µF, Ceramic Capacitor, Size 0603 0.1µF, Ceramic Capacitor, Size 0402, Launch Receptacle connector Position Header Ferrite Bead Inductor 49.9 Resistor Potentiometer
Qty.
Johnson Components Samtec Vishay Vishay Vishay
Bourns
Resistor
Samtec
Position Header Color Coded Test Point Color Coded Test Point 3.3V, 2.7Gbps High Current, Power Laser Driver FP/DFB Lasers
Keystone Keystone Micrel
April 2005
M9999-041505 hbwhelp@micrel.com (408) 955-1690
Micrel, Inc.
SY88982L Evaluation Board
Micrel Cross Reference
find equivalent Micrel part, Micrel's website http://www.micrel.com follow steps below: Click Dynamic Cross Reference. Enter competitor's part number Dynamic Cross Reference field. download version this information, click Cross Reference tab.
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."
Support
Hotline: 408-955-1690 Email Support: HBWHelp@micrel.com
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. 2005 Micrel, Incorporated.
April 2005
M9999-041505 hbwhelp@micrel.com (408) 955-1690

SY88982L Evaluation Board SY88982L evaluation board designed fast

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