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Texas Instruments LMH0395SQE/NOPB
- Part No.:
- LMH0395SQE/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Specialized
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
LMH0395SQE/NOPB.pdf
- Description:
- IC INTERFACE SPECIALIZED 24WQFN
- Quantity:
- Payment:
- Shipping:
Inventory:283
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Product details
Overview
LMH0395SQE/NOPB from Texas Instruments is a 3G HD/SD SDI dual-output adaptive cable equalizer IC designed for serial digital video signal restoration over long coaxial cables. It supports ST 424, ST 292, ST 344, ST 259, and DVB-ASI standards; delivers 200 m reach at 2.97 Gbps on Belden 1694A cable; consumes only 140 mW in dual-output mode; features programmable LVDS outputs with 700 mVP–P default swing and 1.2 V common-mode voltage; and operates from a single 2.5-V supply across −40°C to +85°C.
For engineers reviewing the LMH0395SQE/NOPB datasheet, LMH0395SQE/NOPB pinout, LMH0395SQE/NOPB application, or LMH0395SQE/NOPB equivalent, key selection considerations include SMPTE-compliant equalization range, dual independent LVDS output control, SPI vs. pin-mode configuration flexibility, ultra-low power-save mode (17 mW), and de-emphasis compensation for FR4 board trace losses up to 40 inches.
Technical Context
The LMH0395SQE/NOPB implements an adaptive multi-stage equalizer filter with active sensing circuitry that dynamically adjusts gain and bandwidth based on input signal energy and cable loss characteristics. Its DC restoration block ensures robust handling of pathological video patterns per ST RP 178 and RP 198.
It supports two mutually exclusive operational modes: pin mode (SPI_EN = low) using discrete logic controls for BYPASS, MUTE, AUTO SLEEP, and SDO1_DISABLE; and SPI mode (SPI_EN = high) enabling daisy-chained register access for output swing (400–800 mVP–P), common-mode voltage (0.8–1.2 V), launch amplitude, de-emphasis level, and cable length indicator readback.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Data Rate | 125 Mbps to 2.97 Gbps - enables single device support for SD, HD, 3G-SDI, and DVB-ASI signals without reconfiguration. |
| Equalized Cable Reach | 200 m @ 2.97 Gbps on Belden 1694A - extends transmission distance beyond standard SDI receivers' limits. |
| Power Consumption | 140 mW (dual output), 115 mW (single output), 17 mW (power-save) - reduces thermal load and simplifies power delivery in dense video routing systems. |
| Output Interface | Internally terminated 100-Ω LVDS with programmable swing (400–800 mVP–P) and common-mode voltage (0.8–1.2 V) - ensures compatibility with diverse downstream reclockers and FPGAs. |
| De-Emphasis Support | Programmable de-emphasis for up to 40 inches of FR4 trace loss - compensates for PCB interconnect attenuation without external components. |
| Supply Voltage | Single 2.5 V ±5% - eliminates need for multiple rail supplies and simplifies layout in broadcast-grade equipment. |
| Operating Temperature | −40°C to +85°C - meets industrial and broadcast equipment environmental requirements. |
Pinout & Package
LMH0395SQE/NOPB is housed in a 24-pin WQFN package (4.00 mm × 4.00 mm) with exposed die attach pad (DAP) connected to VEE. The package supports fine-pitch PCB assembly and provides low thermal resistance (RθJA = 40°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SDI / SDI | True/complement analog input | Differential AC-coupled serial data input pair accepting 720–880 mVP–P swing; requires external 75-Ω termination. |
| SDO0 / SDO0, SDO1 / SDO1 | LVDS output pairs | Two independent 100-Ω internally terminated differential outputs; SDO1 can be disabled via SDO1_DISABLE pin to save power. |
| SPI_EN | Mode select control | Drives high for SPI register access; low for pin-mode operation - determines whether configuration is hardware- or software-driven. |
| MUTEREF | Analog threshold reference | Sets carrier detect sensitivity and maximum equalizable cable length; floating default = 1.3 V; adjustable via external voltage or SPI register 03h. |
| AUTO SLEEP | Power management enable | When asserted, powers down outputs to high-Z and reduces ICC to ~7–10 mA when no input signal is detected - critical for energy-efficient distribution amplifiers. |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive equalization with active sensing | Real-time adjustment of filter gain/bandwidth based on input energy and cable loss - maintains signal integrity across variable cable lengths and data rates. |
| Dual independently controllable LVDS outputs | Eliminates need for external fanout buffers in router/switcher designs; second output can be disabled to reduce power by ~25 mW. |
| Programmable output de-emphasis | Compensates for high-frequency loss in FR4 PCB traces up to 40 inches - preserves eye opening without requiring external passive networks. |
| Digital and analog MUTEREF control | Enables precise tuning of carrier detect threshold either via external voltage or SPI register - supports dynamic cable-length adaptation in field-deployed systems. |
| DC restoration for pathological patterns | Ensures correct baseline restoration for SMPTE-compliant SD/HD video sequences (e.g., PRBS10, long run-lengths) - prevents DC wander-induced errors in reclockers. |
Applications
| Broadcast Video Router | Distribution Amplifier |
|---|---|
Use Scenario: High-density SDI signal routing in broadcast control rooms with mixed SD/HD/3G sources and destinations. IC Role / Device Role / Timing Role: Adaptive equalizer restoring signal integrity after long cable runs between router I/O cards and patch panels. Use Value: Enables 200 m cable reach at 3G-SDI rates while maintaining jitter < 0.55 UI - eliminates need for intermediate reclocking stages and reduces system latency. | Use Scenario: One-to-many SDI signal replication for studio monitors, recording devices, and on-air processors. IC Role / Device Role / Timing Role: Dual-output equalizer driving multiple downstream receivers with matched timing and amplitude. Use Value: Independent SDO1 disable capability allows dynamic output allocation - reduces power consumption by 25 mW per unused channel during partial-load operation. |
| HD/3G-SDI Switcher | Field Production Converter |
Use Scenario: Compact portable switchers handling 12G-SDI-equivalent signal chains via multiplexed 3G paths. IC Role / Device Role / Timing Role: Input equalizer stage before internal reclocking and format conversion logic. Use Value: Ultra-low 17 mW power-save mode activates automatically during source blackouts - extends battery life in mobile production units. | Use Scenario: Outdoor camera-to-transmitter links using long coaxial drops in ENG trucks or OB vans. IC Role / Device Role / Timing Role: Cable loss compensation stage prior to wireless modulation or fiber interface. Use Value: Programmable MUTEREF allows field calibration for varying cable types (e.g., Belden 1694A vs. RG-6) - ensures reliable carrier detection across deployment environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SDI equalizer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMH0384SQE/NOPB | Single-output variant; identical equalization performance and power specs but lacks SDO1 and related control pins. | Used where fanout is handled externally or only one output path is required. | Select when dual outputs are unnecessary - saves board space and reduces BOM count. |
| GS2971-IBE3 | Pin-compatible 24-pin QFN; supports same SMPTE standards but adds integrated reclocking and automatic cable length detection. | Preferred in systems requiring jitter cleanup in addition to equalization. | Choose when downstream timing stability is critical and additional jitter tolerance is needed beyond equalization alone. |
Compared with LMH0395SQE/NOPB, LMH0384SQE/NOPB reduces functionality to a single output while retaining equalization fidelity, whereas GS2971-IBE3 adds reclocking capability at the cost of higher power (220 mW) and loss of independent output disable control - making LMH0395SQE/NOPB optimal for pure, low-power, dual-path equalization tasks.
Availability
LMH0395SQE/NOPB is available at Aetrix Electronics and suitable for broadcast video routers, SDI distribution amplifiers, and HD/3G-SDI switchers requiring stable component supply, long-lifecycle assurance, and SMPTE-compliant signal integrity.
Supply support for LMH0395SQE/NOPB includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor company specializing in analog, embedded processing, and connectivity technologies with broad industrial and communications portfolio coverage.
The LMH0395SQE/NOPB belongs to TI's high-speed interface product line, engineered specifically for professional video infrastructure applications demanding SMPTE compliance, low jitter, and extended cable reach in broadcast, production, and post-production systems.
FAQ
What SMPTE standards does the LMH0395SQE/NOPB support?
The LMH0395SQE/NOPB supports ST 424 (3G-SDI), ST 292 (HD-SDI), ST 344 (dual-link HD-SDI), ST 259 (SD-SDI), and DVB-ASI standards. It operates across the full 125 Mbps to 2.97 Gbps data rate range required by these standards, with verified equalization performance up to 200 meters on Belden 1694A cable at 2.97 Gbps. All compliance claims are documented in the official LMH0395SQE/NOPB datasheet (SNLS323N).
How does the LMH0395SQE/NOPB handle pathological video patterns?
The LMH0395SQE/NOPB incorporates a dedicated DC restoration block that fully restores baseline levels for SMPTE-defined pathological patterns such as long run-length sequences specified in ST RP 178 (SD) and RP 198 (HD). This prevents DC wander-induced errors in downstream reclockers or FPGAs. The feature is active by default and does not require configuration - it functions identically in both pin mode and SPI mode of the LMH0395SQE/NOPB.
Can the LMH0395SQE/NOPB operate in both pin mode and SPI mode simultaneously?
No, the LMH0395SQE/NOPB operates exclusively in either pin mode or SPI mode, selected by the logic level on the SPI_EN pin. When SPI_EN is driven low, the device enters pin mode and responds to BYPASS, MUTE, AUTO SLEEP, and SDO1_DISABLE signals. When SPI_EN is high, it enters SPI mode and ignores those control pins, instead accepting commands via MOSI/MISO/SCK/SS. The LMH0395SQE/NOPB datasheet explicitly states these modes are mutually exclusive.
What is the purpose of the MUTEREF pin on the LMH0395SQE/NOPB?
The MUTEREF pin on the LMH0395SQE/NOPB sets the threshold for the Carrier Detect (CD) function and determines the maximum cable length that can be equalized before muting occurs. Applying a voltage >1.3 V to MUTEREF lowers the CD sensitivity - for example, 1.8 V corresponds to ~100 m on Belden 1694A at 2.97 Gbps. Leaving MUTEREF unconnected or grounded enables default CD behavior. The LMH0395SQE/NOPB also allows digital MUTEREF programming via SPI register 03h.
Does the LMH0395SQE/NOPB require external termination resistors on its inputs?
Yes, the LMH0395SQE/NOPB requires external 75-Ω termination on its SDI/SDI input pair. The device itself does not integrate input termination; instead, it expects AC-coupled, single-ended 75-Ω-terminated inputs as specified in the LMH0395SQE/NOPB functional diagram and layout guidelines. Typical implementation uses a 75-Ω series resistor plus 5.6-nH inductor network per input to meet SMPTE return loss requirements above 15 dB from 5 MHz to 1.5 GHz.
LMH0395SQE/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 24-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Amplifier
- Interface:
- SPI Serial
- Voltage - Supply:
- 2.375V ~ 2.625V
- Supplier Device Package:
- 24-WQFN (4x4)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
LMH0395SQE/NOPB FAQ
1.How can I place an order for LMH0395SQE/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMH0395SQE/NOPB on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LMH0395SQE/NOPB reliable?
The price and inventory of LMH0395SQE/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMH0395SQE/NOPB is usually 5 days.
3.What payment methods are accepted for LMH0395SQE/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMH0395SQE/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMH0395SQE/NOPB?
LMH0395SQE/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMH0395SQE/NOPB order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LMH0395SQE/NOPB?
For technical support, including LMH0395SQE/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMH0395SQE/NOPB requirements.
6.How does Aetrix verify that LMH0395SQE/NOPB is sourced from the original manufacturer or authorized distributors?
All LMH0395SQE/NOPB products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LMH0395SQE/NOPB meets industry standards.
7.What is the process for return or replacement of LMH0395SQE/NOPB?
All LMH0395SQE/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMH0395SQE/NOPB, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LMH0395SQE/NOPB part is unused and in its original packaging.
Return procedure for LMH0395SQE/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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