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M21324

SD, HD, 3G Cable Equalizer


Overview

Description

The M21324 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-limiting 75Ω coaxial cable. This device automatically optimizes the 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 M21324 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 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.

Features

  • Adaptive cable equalization
  • Optimized data rate from 143 Mbps to 2.97 Gbps
  • Typical equalized length of Belden 1694A cable: 100m at 2.97 Gbps, 200m at 1.485 Gbps, and 400m at 270 Mbps
  • Programmable mute level
  • Manual bypass mode
  • Differential CML outputs (50Ω on-chip terminations)
  • Single 3.3V power supply
  • Small form factor (4x4mm, 16-pin MLF package)
  • Pb-free and RoHS compliant
  • Extended operating temperature range: -10 to +85ºC

Ordering Information

Part Description Package Pin Count Status
M21324EVM EVM for M21324 Equalizer n/a n/a
M21324G-11 Drop in 3G QFN Equalizer (QFN/RoHS) QFN / MLF 16
M21324G-11P 3G eq with Gennum MLF comp footprint QFN / MLF 16
M21324G-13 Drop in 3G QFN Equalizer (QFN/RoHS) QFN / MLF 16
M21324G-13P Drop in 3G QFN Equalizer (QFN/RoHS) QFN / MLF 16
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Applications

  • • SDI routers
  • • SDI switches
  • • SDI distribution amplifiers
  • • SDI camera

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