Overview
The LMH0344SQX/NOPB is a 3-Gbps HD/SD SDI Adaptive Cable Equalizer designed by Texas Instruments. This device is engineered to equalize data transmitted over cable or any media with similar dispersive loss characteristics. It supports a wide range of data rates from 125 Mbps to 2.97 Gbps and complies with industry standards such as ST 424, ST 292, ST 344, and ST 259. The LMH0344 also supports DVB-ASI at 270 Mbps and features DC restoration to handle pathological data conditions effectively.
Key Specifications
| Specification | Value |
|---|---|
| Package Type | 16-Pin WQFN or 25-Ball CS-BGA |
| Pins | 16 (WQFN), 25 (CS-BGA) |
| Operating Temperature Range (°C) | -40 to 85 |
| Supply Voltage | 3.3 V |
| Typical Power Consumption | 280 mW |
| Data Rate Range | 125 Mbps to 2.97 Gbps |
| Equalization Capability | Up to 120 meters of Belden 1694A at 2.97 Gbps, up to 140 meters at 1.485 Gbps, or up to 400 meters at 270 Mbps |
| Output Jitter | 0.3 UI maximum at 2.97 Gbps |
| ESD Rating | 8 kV (HBM) |
Key Features
- Compliant with ST 424, ST 292, ST 344, and ST 259 standards
- Supports DVB-ASI at 270 Mbps
- Wide range of data rates: 125 Mbps to 2.97 Gbps
- Equalizes up to 120 meters of Belden 1694A at 2.97 Gbps, up to 140 meters at 1.485 Gbps, or up to 400 meters at 270 Mbps
- Manual bypass and output mute with a programmable threshold
- Single-ended or differential input
- 50-Ω differential outputs (internal 50-Ω pullups)
- Single 3.3-V supply operation
- Industrial temperature range: -40°C to +85°C
- HBM ESD rating: 8 kV
- Footprint compatible with LMH0044, LMH0384, and LMH0074
Applications
The LMH0344SQX/NOPB is primarily used in high-definition and standard-definition serial digital interface (HD/SD SDI) applications. It is suitable for broadcast video, professional video equipment, and any system requiring the transmission of high-speed digital video signals over long cables. The device is also applicable in environments where signal integrity needs to be maintained over extended cable lengths.
Q & A
- What is the primary function of the LMH0344SQX/NOPB? The primary function is to equalize data transmitted over cable or media with similar dispersive loss characteristics.
- What are the supported data rates for the LMH0344SQX/NOPB? The device supports data rates from 125 Mbps to 2.97 Gbps.
- Which industry standards does the LMH0344SQX/NOPB comply with? It complies with ST 424, ST 292, ST 344, and ST 259 standards.
- What is the maximum equalization capability of the LMH0344SQX/NOPB? It can equalize up to 120 meters of Belden 1694A at 2.97 Gbps, up to 140 meters at 1.485 Gbps, or up to 400 meters at 270 Mbps.
- What is the typical power consumption of the LMH0344SQX/NOPB? The typical power consumption is 280 mW.
- What are the available package types for the LMH0344SQX/NOPB? The device is available in 16-Pin WQFN and 25-Ball CS-BGA packages.
- What is the operating temperature range of the LMH0344SQX/NOPB? The operating temperature range is -40°C to +85°C.
- Does the LMH0344SQX/NOPB support single-ended or differential inputs? Yes, it supports both single-ended and differential inputs.
- What is the ESD rating of the LMH0344SQX/NOPB? The HBM ESD rating is 8 kV.
- Can the LMH0344SQX/NOPB replace other similar devices? Yes, it can replace the Semtech GS2974A or GS2974B.
