12x6.25 Gb/s MULTIRATE VCSEL DRIVER ZL63039 PRODUCT PREVIEW The growing use of the Internet has created increasingly higher demand for multi-Gb/s I/O performance. The demand for 40 Gb/s bandwidth and beyond fuels the growth of short-reach, high-bandwidth infrastructures within highend telco and datacom routers, switches, servers and other proprietary chassis-to-chassis links. The ZL63039 is a 12-channel x 6.25 Gb/s VCSEL driver designed for various parallel optics and CWDM PMD applications. It consists of a DC-coupled amplifier with selectable threshold and modulation currents optimized for driving commercially available, common cathode VCSELs from a single +3.3 V supply. Individual channel settings are used to control the threshold and modulation drive current and their temperature coefficients, allowing the optical output power and extinction ratio to be optimized. A selectable analog multiplexer provides junction temperature, supply voltage, and VCSEL bias current for each channel to enable optical module diagnostic features. Data controlling the Zarlink ZL63039 VCSEL driver settings is loaded by a simple 2-wire serial serial interface, reducing the number of pins required of a microcontroller. Tx in Tx in Tx in Tx in Tx out ZL63039 12x6.25 Gb/s VCSEL Driver Tx out Tx out ZARLINK Tx out 12x6 Gb/s VCSEL Array Optical Fiber Coupling Micro Controller Rx out Rx out Rx out Rx out 12x6.25 Gb/s TIA/LA Receiver Rx in Rx in Rx in 12-channel VCSEL driver operates from DC to 6.25 Gb/s Single +3.3 V supply dissipating 70 mW per channel Individual channel control for enable, drive currents, and VCSEL fault control Selectable analog multiplexer provides junction temperature, supply voltage, and VCSEL bias current for each channel Adjustable temperature compensation for threshold and modulation drive currents Programmable VCSEL fault detection with autonomous fault handling and interrupt Squelch automatically disables channel when input amplitude falls below programmable threshold Adjustable VCSEL peaking control 2-wire interface provides access to internal registers IC dimensions 2245 x 3870 µm 250-micron channel pitch matches optical ribbon fiber and VCSEL arrays Differential CML compatible inputs with on-chip termination Applications Micro Controller ZL62089 Features ZARLINK 12x6 Gb/s PIN Array Rx in Single data rate (SDR) and double data rate (DDR) XAUI Single data rate (SDR) and double data rate (DDR) InfiniBand 1x, 2x, 4x Fiber Channel Gigabit Ethernet PCI Express SNAP12 optical modules Proprietary and CWDM parallel optical modules Customer Support The ZL63039 12x6.25 Gb/s VCSEL driver is supported by evaluation boards featuring integrated photonics coupled with Zarlink’s driver/receiver ICs to help reduce time-to-market. Information relating to products and services furnished herein by Zarlink Semiconductor Inc. or its subsidiaries is believed to be reliable. The products, their specifications, services and other information appearing in this publication are subject to change by Zarlink without notice. ZARLINK, ZL, ZLE and the Zarlink logo are trademarks of Zarlink Semiconductor Inc. © 2007, Zarlink Semiconductor Inc. All Rights Reserved. Publication Number 7ZS325 www.ZARLINK.com