Overview
The LMH0384SQX/NOPB is a 3-Gbps HD-SD SDI Extended Reach and Configurable Adaptive Cable Equalizer produced by Texas Instruments. This device is designed to equalize data transmitted over cable, supporting a wide range of data rates from 125 Mbps to 2.97 Gbps. It is compliant with various SMPTE standards, including ST 424, ST 292, ST 344, and ST 259. The LMH0384SQX/NOPB features advanced design enhancements such as longer cable equalization, lower output jitter, and a power-saving sleep mode, making it an ideal solution for high-speed serial digital interface applications.
Key Specifications
| Parameter | Value | Description |
|---|---|---|
| Data Rate | 125 Mbps to 2.97 Gbps | Supported data rates |
| Cable Equalization | Up to 140 meters at 2.97 Gbps, up to 200 meters at 1.485 Gbps, up to 400 meters at 270 Mbps | Maximum cable lengths supported for different data rates |
| Supply Voltage | 3.135V to 3.465V | Operating voltage range |
| Package | 16-Pin WQFN Exposed Pad | Physical package type |
| Operating Temperature | -40°C to +85°C | Industrial temperature range |
| Output Configuration | Internally Terminated 100-Ω LVDS Outputs | Output configuration and termination |
| Power Consumption (Power Save Mode) | Typical 35 mW | Power consumption in power-saving mode |
Key Features
- Active Sensing and Design Enhancements: Includes features like longer cable equalization, lower output jitter, and configurable pin and SPI modes.
- Power-Saving Sleep Mode: Auto sleep mode to power down the device when no input signal is detected.
- Programmable Output Common-Mode Voltage and Swing: Adjustable through SPI register access.
- Launch Amplitude Optimization: Compensates for attenuation of the input signal prior to the equalizer.
- DC Restoration: Self-biasing DC restoration circuit to fully DC restore the signals.
- Carrier Detect and Mute Reference: Separate carrier detect and mute reference pins for output control.
- SPI Register Access: Optional SPI mode for register access to all features, including a cable length indicator.
Applications
The LMH0384SQX/NOPB is primarily used in high-speed serial digital interface applications, including:
- Broadcast and Professional Video Equipment: For equalizing SDI signals over long cable runs.
- Medical Imaging and Diagnostic Equipment: Where high-speed data transmission is critical.
- Industrial and Surveillance Systems: For reliable transmission of high-definition video signals.
- Aerospace and Defense Systems: Where robust and reliable data transmission is essential.
Q & A
- What are the supported data rates for the LMH0384SQX/NOPB?
The LMH0384SQX/NOPB supports data rates from 125 Mbps to 2.97 Gbps.
- What are the maximum cable lengths supported by the LMH0384SQX/NOPB?
Up to 140 meters at 2.97 Gbps, up to 200 meters at 1.485 Gbps, and up to 400 meters at 270 Mbps.
- What is the operating voltage range for the LMH0384SQX/NOPB?
The operating voltage range is from 3.135V to 3.465V.
- What is the package type of the LMH0384SQX/NOPB?
The package type is a 16-Pin WQFN Exposed Pad.
- What is the operating temperature range for the LMH0384SQX/NOPB?
The operating temperature range is from -40°C to +85°C.
- Does the LMH0384SQX/NOPB support SPI register access?
- How does the LMH0384SQX/NOPB handle power consumption?
- What are the key enhancements of the LMH0384SQX/NOPB compared to legacy SDI equalizers?
- How does the DC restoration feature work in the LMH0384SQX/NOPB?
- Can the output common-mode voltage and swing be adjusted in the LMH0384SQX/NOPB?
