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MAX3996CGP Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX3996CGP Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 16 page General Description The MAX3996 is a high-speed laser driver for small- form-factor (SFF) fiber optic LAN transmitters. It con- tains a bias generator, a laser modulator, and comprehensive safety features. Automatic power con- trol (APC) adjusts the laser bias current to maintain average optical power, regardless of changes in tem- perature or laser properties. The driver accommodates common anode or differential laser configurations. The output current range of the MAX3996 is appropriate for VCSELs and high-efficiency edge-emitting lasers. The MAX3996 operates up to 3.2Gbps. It can switch up to 30mA of laser modulation current and sink up to 60mA bias current. Adjustable temperature compensa- tion is provided to keep the optical extinction ratio with- in specifications over the operating temperature range. The MAX3996 accommodates various laser packages, including low-cost TO-46 headers. Low deterministic jit- ter (9psP-P), combined with fast edge transitions, (65ps) provides excellent margins compared to indus- try-standard transmitter eye masks. This laser driver provides extensive safety features to guarantee single-point fault tolerance. Safety features include a transmit disable, redundant shutdown, and laser-bias monitoring. The safety circuit detects faults that could cause hazardous light levels and immediate- ly disables the laser output. The MAX3996 safety cir- cuits are compliant with SFF and small-form-factor pluggable (SFP) multisource agreements (MSA). The MAX3996 is available in a compact 4mm ✕ 4mm, 20-pin QFN package and a 20-pin thin QFN package. It operates over a temperature range of 0°C to +70°C. Applications Fibre Channel Optical Transmitters VCSEL Transmitters Gigabit Ethernet Optical Transmitters ATM LAN Optical Transmitters 10 Gigabit Ethernet WWDM Features o 9psP-P Deterministic Jitter o 20-Pin QFN 4mm ✕ 4mm Package o 3.0V to 5.5V Supply Voltage o Automatic Power Control o Integrated Safety Circuits o 30mA Laser Modulation Current o Temperature Compensation of Modulation Current o Compliant with SFF and SFP MSA 3.0V to 5.5V, 2.5Gbps VCSEL and Laser Driver ________________________________________________________________ Maxim Integrated Products 1 MAX3996 0.01 µF 0.01 µF CPORDLY RTC RMOD CCOMP N.C. 0.01 µF 0.01 µF 0.01 µF L1* 25 Ω OPTIONAL SHUTDOWN CIRCUITRY 1.8k Ω VCC VCC VCC TX_DISABLE FAULT IN+ IN- PORDLY TC MODSET MON1 MON2 COMP GND MD BIAS OUT+ OUT- SHDNDRV *FERRITE BEAD RSET Typical Application Circuit Ordering Information 19-2194; Rev 3; 5/04 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. PART TEMP RANGE PIN- PACKAGE PACKAGE CODE MAX3996CGP 0°C to +70°C 20 QFN G2044-3 MAX3996CTP+ 0°C to +70°C 20 Thin QFN T2044-3 Pin Configuration appears at end of data sheet. +Denotes Lead-Free Package |
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