The LMH0034 is a monolithic integrated circuit that can be used to equalize data transmitted over a cable (or any media with similar dispersive loss characteristics) at data rates from 143 Mbps to 1.485 Gbps. It supports the SMPTE 292M, SMPTE 344M and SMPTE 259M standards. The LMH0034 implements DC restoration to correctly handle pathological data conditions. DC restoration can be bypassed for low data rate applications. The equalizer is flexible in allowing either single-ended or differential input drive. Additional features include a combined carrier detect and output mute pin which mutes the output when no signal is present. A programmable mute reference is used to mute the output at a selectable level of signal degradation. A cable length indicator is provided to determine the amount of cable being equalized.
The LMH0034 is a monolithic integrated circuit designed as an adaptive cable equalizer for serial digital interfaces compliant with SMPTE 292M, SMPTE 344M, and SMPTE 259M standards. It operates over a wide range of data rates from 143 Mbps to 1.485 Gbps and supports DVB-ASI at 270 Mbps.
| Data Rate Range | 143 Mbps to 1.485 Gbps |
|---|---|
| Supply Voltage | Single 3.3V |
| Typical Power Consumption | 208mW |
| Max Equalized Cable Length (1.485 Gbps) | 140 meters of Belden 1694A |
| Max Equalized Cable Length (270 Mbps) | 350 meters of Belden 1694A |
| Output Resistance | 50 Ohm (single-ended) |
The device is compliant with SMPTE 292M, SMPTE 344M, and SMPTE 259M.
Yes, it supports DVB-ASI at a data rate of 270 Mbps.
The equalizer can handle up to 140 meters of Belden 1694A cable at 1.485 Gbps.