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Texas Instruments LMH0395SQX/NOPB
- Part No.:
- LMH0395SQX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Specialized
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
LMH0395SQX/NOPB.pdf
- Description:
- IC INTERFACE SPECIALIZED 24WQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,351
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Product details
Overview
LMH0395SQX/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 runs. It supports ST 424 (2.97 Gbps), ST 292 (1.485 Gbps), and ST 259 (270 Mbps) standards, delivers 200 m reach on Belden 1694A at 2.97 Gbps, consumes only 140 mW in dual-output mode, and features programmable LVDS outputs with 700 mVP-P default swing - deployed in broadcast video routers and distribution amplifiers.
For engineers reviewing the LMH0395SQX/NOPB datasheet, LMH0395SQX/NOPB pinout, LMH0395SQX/NOPB application, or LMH0395SQX/NOPB equivalent, key selection considerations include SMPTE compliance across three data rate tiers, dual independent LVDS outputs with SPI- or pin-mode control, ultra-low power-save mode (17 mW), de-emphasis for FR4 trace compensation, and carrier-detect–driven auto-sleep functionality.
Technical Context
The LMH0395SQX/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 profile. Its DC restoration block fully restores baseline for pathological SD/HD video patterns per ST RP 178 and RP 198.
It operates in two mutually exclusive modes: pin mode (SPI_EN = GND) using discrete logic controls for BYPASS, AUTO SLEEP, MUTE, and SDO1_DISABLE; and SPI mode (SPI_EN = VCC) supporting daisy-chained configuration via MOSI/MISO/SCK/SS with register-level control of output common-mode voltage (0.8–1.2 V), swing (400–800 mVP-P), de-emphasis, and launch amplitude.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate Range | 125 Mbps to 2.97 Gbps - supports full SMPTE SD/HD/3G-SDI hierarchy without reconfiguration. |
| Cable Reach (Belden 1694A) | 200 m at 2.97 Gbps - enables long-haul routing in broadcast infrastructure without repeaters. |
| Power Consumption | 140 mW (dual output), 17 mW (power-save mode) - reduces thermal load and simplifies thermal design in dense video chassis. |
| Output Interface | Internally terminated 100-Ω LVDS - eliminates external termination resistors and saves PCB area. |
| Supply Voltage | 2.5 V ±5% - compatible with standard low-voltage video system rails and reduces noise coupling. |
| Jitter Performance | ≤0.55 UI at 2.97 Gbps over 200 m - meets ST 424 jitter budget for reliable eye opening at receiver input. |
| Input Return Loss | ≥15 dB (5 MHz–1.5 GHz), ≥10 dB (1.5–3.0 GHz) - ensures minimal signal reflection and maintains signal integrity on coax feed. |
Pinout & Package
LMH0395SQX/NOPB is housed in a 24-pin WQFN package (4.00 mm × 4.00 mm) with exposed die attach pad (DAP) connected to VEE (ground). The package supports both pin-mode and SPI-mode operation, selected by SPI_EN level; pin functions differ between modes as defined in TI SNLS323N Rev N.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SDI / SDI | Analog Input Pair | Differential true/complement serial data input - AC-coupled, internally biased, accepts 720–880 mVP-P swing. |
| SDO0 / SDO0, SDO1 / SDO1 | LVDS Output Pairs | Dual 100-Ω internally terminated differential outputs - independently controllable, programmable swing/common-mode. |
| SPI_EN | Mode Select Input | Drives high for SPI mode (daisy-chain register access); drives low for pin mode (discrete logic control). |
| AUTO SLEEP | Power Management Input | Enables automatic power-down when CD detects no input signal - reduces quiescent current to 7–10 mA. |
| MUTEREF | Analog Threshold Reference | Sets carrier detect sensitivity and maximum equalizable cable length - adjustable via analog voltage or SPI register 03h. |
| CD | Carrier Detect Output | LVCMOS open-drain output indicating valid input presence - used to trigger mute or auto-sleep actions. |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive Equalization | Real-time adjustment of gain/bandwidth based on cable loss and input energy - maintains signal integrity across variable-length coax runs. |
| Dual Independent Outputs | Two LVDS drivers with separate enable/disable control (SDO1_DISABLE) - eliminates need for external fanout buffers in distribution systems. |
| Programmable De-Emphasis | Compensates for up to 40 inches of FR4 board trace loss - preserves eye opening when routing outputs to downstream reclockers or FPGAs. |
| DC Restoration | Self-biasing circuit handles pathological video patterns (e.g., long strings of 0s/1s) per ST RP 178/RP 198 - prevents baseline wander and bit errors. |
| Ultra-Low Power-Save Mode | 17-mW typical consumption with outputs in high-Z - extends uptime in battery-backed or thermally constrained broadcast edge devices. |
Applications
| Broadcast Video Router | Distribution Amplifier |
|---|---|
|
Use Scenario: Aggregating and switching multiple 3G-SDI camera feeds in live production trucks. IC Role / Device Role / Timing Role: Adaptive equalizer restoring signal integrity after 150+ meter coax runs from remote cameras. Use Value: Enables error-free switching without manual gain adjustment or repeater insertion - critical for uninterrupted live broadcast. |
Use Scenario: Splitting one 2.97-Gbps SDI source to 8 monitoring displays in a master control room. IC Role / Device Role / Timing Role: Dual-output driver providing two independent, jitter-cleaned copies for parallel distribution paths. Use Value: Eliminates need for external fanout buffers while maintaining SMPTE-compliant jitter and eye mask compliance. |
| SDI Reclocker Interface | Field-Deployable Camera Link |
|
Use Scenario: Driving LMH0346/LMH0356 reclockers on PCBs with >20 cm FR4 traces between equalizer and receiver. IC Role / Device Role / Timing Role: LVDS transmitter with programmable de-emphasis compensating for board-level interconnect loss. Use Value: Preserves 0.3 UI eye opening at reclocker input - avoids timing closure issues in high-density video processing modules. |
Use Scenario: Embedding in portable camera back units transmitting HD-SDI over extended coax to mobile production vans. IC Role / Device Role / Timing Role: Low-power adaptive equalizer enabling 220 m reach at 1.485 Gbps with auto-sleep during standby. Use Value: Reduces system power draw by >80% during idle periods - extends battery life without compromising link reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SDI equalizer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMH0384SQX/NOPB | Single-output, 2.97-Gbps SDI equalizer; no SDO1 or SDO1_DISABLE pin; 115 mW dual-rate power. | Lacks second output and independent output disable - requires external fanout for multi-path distribution. | Select when only one output path is needed and board space/power budget is highly constrained. |
| GS2971-IBE3 | 3G-SDI equalizer with integrated reclocking; supports SMPTE ST 2081 (12G-SDI) forward compatibility; 3.3-V supply. | Includes reclock function and wider voltage range but higher power (220 mW) and larger 32-pin QFN package. | Select when jitter cleanup beyond equalization is required or future 12G-SDI upgrade path is planned. |
Compared with LMH0395SQX/NOPB, LMH0384SQX/NOPB reduces cost and footprint for single-output use cases but sacrifices distribution flexibility, while GS2971-IBE3 adds reclocking and scalability at the expense of power and layout complexity.
Availability
LMH0395SQX/NOPB is available at Aetrix Electronics and suitable for broadcast video routers, SDI distribution amplifiers, and field-deployable camera links requiring stable component supply, long-cable signal integrity, and low-power operation in industrial temperature environments.
Supply support for LMH0395SQX/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 leader delivering analog and embedded processing solutions, with deep expertise in high-speed interface ICs for professional video and communications infrastructure.
The LMH0395SQX/NOPB belongs to TI's LMH high-speed SDI equalizer product line, engineered specifically for SMPTE-compliant broadcast equipment where cable reach, jitter performance, and power efficiency are critical design constraints.
FAQ
What SMPTE standards does the LMH0395SQX/NOPB support?
The LMH0395SQX/NOPB supports ST 424 (2.97 Gbps), ST 292 (1.485 Gbps), ST 344 (540 Mbps), ST 259 (270 Mbps), and DVB-ASI standards. It operates across the full 125 Mbps–2.97 Gbps data rate range without hardware reconfiguration, making LMH0395SQX/NOPB suitable for mixed-rate broadcast infrastructures where legacy SD and modern 3G-SDI coexist.
How does the LMH0395SQX/NOPB achieve 200-meter cable reach at 2.97 Gbps?
The LMH0395SQX/NOPB achieves 200-meter reach on Belden 1694A coax at 2.97 Gbps through its adaptive multi-stage equalizer filter, which dynamically compensates for frequency-dependent loss using real-time energy detection and AEC feedback. LMH0395SQX/NOPB also incorporates DC restoration to handle pathological video patterns, ensuring robust eye opening even after severe channel degradation.
Can the LMH0395SQX/NOPB operate in both pin-control and SPI modes simultaneously?
No - the LMH0395SQX/NOPB operates exclusively in either pin mode (SPI_EN = GND) or SPI mode (SPI_EN = VCC), not both. In pin mode, functions like BYPASS, AUTO SLEEP, and SDO1_DISABLE are controlled directly by logic levels on dedicated pins. In SPI mode, those same functions are configured via registers accessed through MOSI/MISO/SCK/SS, and the pin functions change accordingly (e.g., Pin 10 becomes CD instead of BYPASS).
What is the purpose of the MUTEREF pin on the LMH0395SQX/NOPB?
The MUTEREF pin on the LMH0395SQX/NOPB sets the threshold for the Carrier Detect (CD) output and determines the maximum cable length before automatic muting occurs. Applying a voltage inversely proportional to desired reach (e.g., ~1.1 V for 180 m) adjusts CD sensitivity; leaving MUTEREF unconnected or grounded enables default CD behavior. LMH0395SQX/NOPB also allows digital MUTEREF programming via SPI register 03h.
Does the LMH0395SQX/NOPB require external termination resistors on its LVDS outputs?
No - the LMH0395SQX/NOPB features internally terminated 100-Ω LVDS outputs (SDO0/SDO0 and SDO1/SDO1), eliminating the need for external 100-Ω differential termination resistors. This reduces PCB component count and layout complexity. However, proper 100-Ω differential transmission lines and receiver-side termination (e.g., 100-Ω resistor or internal 50-Ω per side) remain essential for signal integrity.
LMH0395SQX/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
LMH0395SQX/NOPB FAQ
1.How can I place an order for LMH0395SQX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMH0395SQX/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 LMH0395SQX/NOPB reliable?
The price and inventory of LMH0395SQX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMH0395SQX/NOPB is usually 5 days.
3.What payment methods are accepted for LMH0395SQX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMH0395SQX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMH0395SQX/NOPB?
LMH0395SQX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMH0395SQX/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 LMH0395SQX/NOPB?
For technical support, including LMH0395SQX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMH0395SQX/NOPB requirements.
6.How does Aetrix verify that LMH0395SQX/NOPB is sourced from the original manufacturer or authorized distributors?
All LMH0395SQX/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 LMH0395SQX/NOPB meets industry standards.
7.What is the process for return or replacement of LMH0395SQX/NOPB?
All LMH0395SQX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMH0395SQX/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 LMH0395SQX/NOPB part is unused and in its original packaging.
Return procedure for LMH0395SQX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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