Overview
The LMH0395SQE/NOPB is a 3G HD/SD SDI Dual Output Low Power Extended Reach Adaptive Cable Equalizer produced by Texas Instruments. This device is designed to equalize data transmitted over cable or any media with similar dispersive loss characteristics, supporting a wide range of data rates from 125 Mbps to 2.97 Gbps. It is particularly suited for applications requiring extended cable reach, low power consumption, and high immunity to crosstalk.
The LMH0395 operates in compliance with various serial digital interface standards, including ST 424, ST 292, ST 344, ST 259, and DVB-ASI. It features two differential serial data outputs, which can be independently enabled and controlled, and offers programmable de-emphasis to compensate for FR4 board trace losses.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC - VEE) | 2.375 | 2.5 | 2.625 | V |
| Operating Temperature Range | -40 | 25 | 85 | °C |
| Input Data Rates | 125 Mbps | - | 2.97 Gbps | - |
| Input Voltage Swing (SDI) | 720 | 800 | 880 | mVp-p |
| Differential Output Voltage (SDO0, SDO1) | 500 | 700 | 900 | mVp-p |
| Supply Current (Normal Operation, Dual Outputs) | 55 | 78 | - | mA |
| Supply Current (Power-Save Mode) | 7 | 10 | - | mA |
| Package Type | - | - | - | 24-Pin WQFN |
Key Features
- Supports ST 424, ST 292, ST 344, ST 259, and DVB-ASI standards
- Extended cable reach with improved immunity to crosstalk
- Ultra-low power consumption with power management features
- Active sensing circuitry for robust performance and enhanced immunity to variations in input signal launch amplitude
- Programmable de-emphasis to compensate for up to 40 inches of FR4 trace losses
- Optional SPI serial interface for configuring multiple devices in a daisy-chain configuration
- Single 2.5-V supply operation
- Industrial temperature range: -40°C to +85°C
- Digital and analog programmable mute reference threshold
- Cable length indicator
- Internally terminated 100-Ω LVDS outputs with programmable output common-mode voltage and swing
Applications
- Broadcast video routers, switchers, and distribution amplifiers
- Professional video equipment requiring extended cable reach and low power consumption
- Systems complying with ST 424, ST 292, ST 344, ST 259, and DVB-ASI standards
Q & A
- What are the supported data rates for the LMH0395?
The LMH0395 supports data rates from 125 Mbps to 2.97 Gbps.
- What standards does the LMH0395 comply with?
The LMH0395 complies with ST 424, ST 292, ST 344, ST 259, and DVB-ASI standards.
- What is the typical power consumption of the LMH0395 in normal operation?
The typical power consumption in normal operation with dual outputs is 78 mA, and with single output is 65 mA.
- How does the LMH0395 manage power consumption when no input signal is present?
The LMH0395 has an auto sleep feature that powers down the device and puts the outputs in a high impedance state when no input signal is detected.
- What is the operating temperature range of the LMH0395?
The operating temperature range is -40°C to +85°C.
- What type of package does the LMH0395 come in?
The LMH0395 comes in a 24-Pin WQFN package.
- Can the LMH0395 be controlled via SPI interface?
- How does the LMH0395 compensate for FR4 board trace losses?
The LMH0395 offers programmable de-emphasis to compensate for up to 40 inches of FR4 trace losses.
- What is the purpose of the mute reference input (MUTEREF) on the LMH0395?
The mute reference input (MUTEREF) sets the threshold for carrier detect and determines the maximum cable length to be equalized before muting.
- Can the output drivers of the LMH0395 be independently enabled and controlled?
