> Product Overview The M21518 is a very low power cable driver for SMPTE compliant digital video applications. The M21518 can drive a pair of 75Ω coaxial cables or 50Ω equivalent loads at SDI data rates from 143 Mbps to 2.97 Gbps. The device is capable of outputting SDI signals with typical jitter values of 12 ps peak–to–peak, when operating at 2.97 Gbps. Product Brief M21518 3G/HD/SD-SDI Low Power Cable Driver The M21518 cable driver includes integrated input and output termination resistors, input equalization for up to 36” of FR4 trace, two connectors, and exceptional Output Return Loss (ORL) making it ideal for high speed, 3G-SDI, designs. The device features integrated supply regulators, allowing it to be powered from 1.8V, 2.5V, or 3.3V supply voltages. When operating at 1.8V, the cable driver consumes only 52 mW at 2.97 Gbps. Furthermore, the power rails for the input and output circuitries are electrically isolated on-chip and as such may be connected to different voltage rails on the board. This feature enables the device to be DC coupled to any upstream device in the 1.2V to 3.3V range. The cable driver also provides cable detect and Loss of Signal (LOS) functionality. The device may be configured to automatically power down at cable disconnect or loss of input signal. The M21518 is available in a green and RoHS-compliant 24-pin QFN package. Features Benefits >> SMPTE 424M, 292M, and 259M compliant Standard compliant solution >> Exceptional output return loss with no matching network Save board area and enable high density designs >> Typical output jitter of 12 ps pk–pk at 2.97 Gbps Enable robust, high speed, SDI design >> Integrated, selectable, 75Ω or 50Ω output termination Save board area and enable high density designs >> Integrated 50Ω input termination Save board area and enable high density designs >> Very low power design; 52 mW/channel @1.8V Enable low power designs with minimal heat dissipation >> Input equalization 36” of FR4 trace + 2 connectors Ease of high speed design and layout >> Selectable slew rate for SD and 3G/HD operation Standard compliant solution >> Integrated regulators for multi-voltage operation (1.8V – 3.3V) Reduce number of power rails required on a board >> Universal DC coupling at the input (1.2V – 3.3V) >> Cable detect with automatic power down and power up upon cable disconnect and re-connect >> Loss of input signal detection with automatic power down and power up upon cable disconnect and re-connect >> Industrial operating temperature range ( -40°C to +85°C) Reduce the number of external components required Reduced power consumption Reduced power consumption Provides higher tolerance and additional design margin > LOS SDIP 75Ω/ 50Ω SDO0A 75Ω/ 50Ω SDO0B IE SDIN CABLE DET Fig. 1 - M21518 Functional Block Diagram > Product Features Applications •• 3G/HD/SD-SDI switchers Cable Driver M21518 Equalizer •• 3G/HD/SD-SDI routers •• 3G/HD/SD distribution amplifiers Crosspoint •• DVB-ASI equipment Reclocker Output Card •• Supports DVB-ASI (270 Mbps) Switch Card •• SMPTE 259M, 292M, 344M, 424M Input Card Standards Compliance Package (RoHS Compliant) •• 24pin QFN •• 4mmX4mm Backplane Fig. 2 - Typical Routing Switcher Application Diagram For more product information, please visit www.mindspeed.com www.mindspeed.com/salesoffices © 2010 Mindspeed Technologies, Inc. All rights reserved. Mindspeed and the Mindspeed logo are General Information: (949) 579-3000 trademarks of Mindspeed Technologies. All other trademarks are the property of their respec- Headquarters – Newport Beach 4000 MacArthur Blvd., East Tower Newport Beach, CA 92660-3007 M21518-BRF-001-A.pdf tive owners. Although Mindspeed Technologies strives for accuracy in all its publications, this material may contain errors or omissions and is subject to change without notice. This material is provided as is and without any express or implied warranties, including merchantability, fitness for a particular purpose and non-infringement. Mindspeed Technologies shall not be liable for any special, indirect, incidental or consequential damages as a result of its use.