MAX3795 Datasheet | Maxim Integrated

19-3387; Rev 0; 8/04 1Gbps to 4.25Gbps Multirate VCSEL Driver with Diagnostic Monitors General Description The MAX3795 is a high-speed VCSEL driver for smallform-factor (SFF) and small-form-factor pluggable (SFP) fiber optic transmitters. It contains a bias generator, a laser modulator, and prehensive safety Features . The automatic power control (APC) adjusts the laser bias current to maintain average optical power over changes in temperature and laser properties. The driver acmodates mon-cathode and differential .. configurations. The MAX3795 operates up to 4.25Gbps. It can switch up to 15m A of laser modulation current and source up to 15m A of bias current. Adjustable temperature pensation is provided to keep the optical extinction ratio within specifications over the operating temperature range. The MAX3795 interfaces with the Dallas DS1856/DS1859 to meet SFF-8472 timing and diagnostic requirements. The MAX3795 acmodates various VCSEL packages, including low-cost TO-46 headers. The MAX3795 safety circuit detects faults that could cause hazardous light levels and disables the VCSEL output. The safety circuits are pliant with SFF and SFP multisource agreements (MSAs). The MAX3795 is available in a pact 4mm ✕ 4mm, 24-pin thin QFN package and operates over the -40°C to +85°C temperature range. The MAX3795 is pin-forpin patible with the MAX3740A and is available in lead-free packages. - 3.3V ±10% Single Supply - 2m A to 15m A Modulation Current - 1m A to 15m A Bias Current - 52ps Transition Time - 8.4ps Deterministic Jitter - Optional Peaking Current to Improve VCSEL Edge Speed - Supports mon-Cathode and Differential Configuration - Safety Circuits pliant with SFF and SFP MSAs - Pin patible to MAX3740A Features - Supports All SFF-8472 Digital Diagnostics Ordering Information PART MAX3795ETG MAX3795ETG+ TEMP RANGE PIN-PACKAGE -40°C to +85°C 24 Thin QFN (4mm x 4mm) -40°C to +85°C 24 Thin QFN (4mm x...