> Product Overview The M21424 is a high-speed, low-power, adaptive co-axial cable equalizer designed to increase the maximum low-jitter transmission distance of serial digital interface (SDI) video signals and DVB-ASI across commonly used bandwidth Product Brief M21424 3G/HD/SD-SDI Dual-Output Cable Equalizer limiting 75Ω coaxial cable. These devices automatically optimize their transfer function based on the bit rate and cable length to minimize the inter-symbol interference (ISI) jitter caused by the cable and to remove the DC offset components introduced with the pathological test pattern and AC coupling in systems. The M21424 is designed to support SD, HD, and 3G data rates from 143 Mbps to 2970 Mbps. The low-noise, high-gain equalizer allows for low jitter 3G-SDI transmissions up to 100m (Belden 1694A) and HD transmissions up to a length of 200m (Belden 1694A) and 120m (Belden 8281). For SD data rates, cable lengths up to 400m (Belden 1694A) and 300m (Belden 8281) are supported. The M21424 is available in a green and RoHS compliant package. Features Benefits >> SMPTE 424M, 292, 259M compliant, DVB-ASI (270 Mbps) Robust standard compliant equalizers >> Adaptive cable equalization Design flexibility and control >> Optimized data rates from 143 Mbps to 2.97 Gbps Range of solution for multiple data rates >> Pair of CML outputs with selectable high amplitude High speed outputs with low cost integration >> Mute and manual BYPASS mode Supports non standard rates >> Typical equalized length of Belden 1694A cable: 100m at 2.97 Gbps Extend legacy cable length at higher speeds >> 200m at 1.485 Gbps, and 400m at 270 Mbps Extend industry standard cable length >> Low power dissipation (175 mW at 2.5V, and 230 mW at 3.3V) Low power and thermal management costs >> 2.5V or 3.3V power supply Standard voltage supplies supported >> Small form factor (5x5mm, 32-pin QFN package) Saves board area >> Extended operating temperature range: –10°C to +85 °C Provides additional margin for most applications > M21424 Equalizer Cable Driver Crosspoint Output Card Input Card Switch Card Reclocker Backplane Fig. 1 - Routing Switcher Application Diagram > Product Features S D/ M UTE THRE S H S W ING _ L/H Applications C ON TR OL LOGIC M 21424 Cable E qualizer •• SDI Routers •• SDI Switches OUTPUT BUFFER •• SDI Distribution Amplifier •• SDI Camera S DI Standards Compliance S DI IN PU T B U FFER EQU A LIZER S DO 1 1 DC RESTORE C OR E 0 •• SMPTE 259M, 292, 344M, 424M OUTPUT BUFFER •• Supports DVB-ASI (270 Mbps) Package (RoHS Compliant) S DO 1 C A B LE LEN GTH IN D IC A TOR S DO 2 S DO 2 •• 5x5 mm, 32-pin QFN CLE N E Q_ B Y P S DO 2_E N Fig. 2 - M21424 Block 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 M21424-BRF-001-E.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.
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