sy84782u Micrel Semiconductor, sy84782u Datasheet
sy84782u
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sy84782u Summary of contents
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... General Description The SY84782U is a single 2.5V supply, ultra-low power, small form factor laser diode driver for telecom/datacom applications. Intended to drive FP/DFB lasers at data rates up to 1.25Gbps especially useful for Compact SFP, SFP and SFF modules where power requirements are quite stringent. The driver can deliver modulation current ...
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... Micrel, Inc. Functional Block Diagram Ordering Information Part Number SY84782UMG SY84782UMG TR (1) Note: 1. Tape and Reel Pin Configuration January 2011 Package Operating Type Range QFN-16 Industrial QFN-16 Industrial 16-Pin QFN 2 Package Marking Finish 782U Pb-Free Pb-Free bar-line indicator 782U Pb-Free Pb-Free bar-line indicator hbwhelp@micrel ...
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... To be connected to the MIC3003 pin 24 (VMOD+). Input impedance 25KOhm. Enable Pin. A high level signal applied to this pin will pull the MOD+ output HIGH and MOD- output LOW. Internally pulled down with a 75KOhm resistor. /EN MOD (1) MOD- Laser Output M9999-012411-A hbwhelp@micrel.com or (408) 955-1690 SY84782U ( ...
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... MOD Min Typ Max 200 2400 2 0.8 1.2 = 25° 60mA MOD Min Typ Max 0.155 1. 750 20 20 100 140 = 60mA M9999-012411-A hbwhelp@micrel.com or (408) 955-1690 SY84782U Units ( Ω KΩ mVpp Units Gbps mA ( pspp ps ps ...
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... Excluded) MOD 1000 Modulation Current (mA) = 2.5V 25° 60mA A MOD MOD I MOD (Compliance Voltage) 100 100 0 0.2 0.4 = 25° 60mA A MOD hbwhelp@micrel.com SY84782U vs V MOD 0.6 0.8 1 1.2 V (V) MOD M9999-012411-A or (408) 955-1690 ...
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... Micrel, Inc. Input and Output Stages Figure 1a. Simplified Input Stage January 2011 Figure 1b. Simplified Output Stage 6 hbwhelp@micrel.com SY84782U M9999-012411-A or (408) 955-1690 ...
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... DC-Coupling In addition to the low power consumption and high modulation current, the SY84782U offers a high compliance voltage. The minimum voltage needed at the output of the driver for proper operation is less than 600mV, leaving a large headroom, V laser with the damping resistor ...
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... AC-coupling the laser to the driver brings a solution to the driver headroom problem at the expense of extra components, loss of part of the modulation current wasted in the pull-up network, and additional power consumption. January 2011 Figure 3. Laser AC-Coupled 8 hbwhelp@micrel.com SY84782U M9999-012411-A or (408) 955-1690 ...
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... 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 January 2011 16-Pin (3mm x 3mm) QFN indemnify Micrel for any damages resulting from such use or sale. © 2011 Micrel, Incorporated. 9 ® (QFN-16) http://www.micrel.com hbwhelp@micrel.com SY84782U M9999-012411-A or (408) 955-1690 ...