SY88236LMG

SY88236L/AL 2.5Gbps Burst Mode Laser Driver with Integrated Limiting Amplifier General Description Features • 2.4V minimum laser compliance voltage The SY88236L is a single supply 3.3V integrated burst • Operation up to 2.5Gbps mode laser driver and post amplifier for A-PON, B-PON, • Fast burst mode enable/disable delay EPON, GE-PON, and G-PON applications with data rates from 155Mbps up to 2.5Gbps. The driver can deliver • Modulation current up to 85mA modulation current up to 85mA, and provides a high • Bias current up to 70mA compliance voltage that makes it suitable for high-current • Infinite bias current hold time between bursts operation with the laser DC-coupled to it. The post • Bias, Modulation, and power monitoring amplifier can detect signals with amplitude as low as 5mVPP. • High input sensitivity post amplifier, 5mVPP The SY88236AL is a version of the SY88236L without 50Ω • Programmable LOS level termination resistors at the inputs of the driver and the post • Available in 32-pin (5mm x 5mm) QFN package amplifier. The SY88236AL is to be used specially in SFF modules mounted on ONU mother boards which have Applications preinstalled terminations. Removing post amplifier input • Multi-rate burst mode applications: A-PON, B-PON, terminations will allow for receiver gain control. G-PON, E-PON, GE-PON All support documentation can be found on Micrel’s web site at: www.micrel.com. ___________________________________________________________________________________________________________ Typical Application Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com June 2009 M9999-063009-A hbwhelp@micrel.com or (408) 955-1690 Micrel, Inc. SY88236L/AL Ordering Information(1) Part Number Voltage Temperature Range Package Type Package Marking Lead Finish SY88236LMG 3.3V –40° to +85°C QFN-32 SY88236L with Pb-Free bar-line indicator NiPdAu Pb-Free SY88236LMGTR 3.3V –40° to +85°C QFN-32 SY88236L with Pb-Free bar-line indicator NiPdAu Pb-Free SY88236ALMG 3.3V –40° to +85°C QFN-32 SY88236A with Pb-Free bar-line indicator NiPdAu Pb-Free 3.3V –40° to +85°C QFN-32 SY88236A with Pb-Free bar-line indicator NiPdAu Pb-Free (2) (2) SY88236ALMGTR Notes: 1. Contact factory for die availability. Dice are guaranteed at TA = +25°C, DC Electricals only. 2. Tape and Reel. June 2009 2 M9999-063009-A hbwhelp@micrel.com or (408) 955-1690 Micrel, Inc. SY88236L/AL Pin Configuration 32-Pin QFN Pin Description Pin Number Pin Name Pin Function 1 LOS/SD_SEL 2 LOSLVL Loss-of-Signal Level Set. A resistor from this pin to VCC sets the threshold for the data input amplitude at which LOS will be asserted. 3 LOS/SD Loss-of-Signal (LOS selected): asserts high when the data input amplitude falls below the threshold set by LOSLVL. LOS or SD selection, TTL input. Set high, connect to VCC, or leave open to select LOS. Set low or connect to GND to select SD. Signal Detect (SD selected): asserts low when the data input amplitude falls below the threshold set by LOSLVL. 4 JAM Active low TTL/CMOS. Internally pulled-up with 75kΩ. Connect to GND or apply a low level signal (