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Texas Instruments LMH0376SQ/NOPB
- Part No.:
- LMH0376SQ/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Video Processing
- Package:
- 48-WFQFN Exposed Pad
- Datasheet:
-
LMH0376SQ/NOPB.pdf
- Description:
- IC VIDEO RECLOCKER 48WQFN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
LMH0376SQ/NOPB from Texas Instruments is a 3 Gbps SMPTE-compliant HD/SD SDI reclocker with integrated 4:1 input multiplexer, eye monitor, and dual LVDS outputs. It retimes serial digital video at 125 Mbps–2.97 Gbps, suppresses jitter in broadcast signal chains, and supports DVB-ASI and MADI protocols in broadcast routers and distribution amplifiers.
For engineers reviewing the LMH0376SQ/NOPB datasheet, LMH0376SQ/NOPB pinout, LMH0376SQ/NOPB application, or LMH0376SQ/NOPB equivalent, this page delivers verified technical context, real-world interface constraints, confirmed power and jitter performance, and validated alternatives for SMPTE ST 424/292/259-C video infrastructure designs.
Technical Context
The LMH0376SQ/NOPB implements a multi-rate CDR (Clock and Data Recovery) architecture with automatic data rate detection across six discrete rates (125/270 Mbps, 1.4835/1.485 Gbps, 2.967/2.97 Gbps), supporting both reference-less and 27 MHz external reference operation. Its PLL loop bandwidth scales from 350 kHz at 270 Mbps to 3.5 MHz at 2.97 Gbps for optimal jitter attenuation.
It integrates four independently equalized SDI inputs (0–60" FR4), programmable signal detect per channel, and two fully configurable LVDS outputs with adjustable de-emphasis (0–7 dB), swing (400–800 mVP-P), and common-mode voltage (0.8–1.2 V). The 64 × 64 point eye monitor operates only in reclock mode and is disabled during bypass.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rates | 125 Mbps, 270 Mbps, 1.4835 Gbps, 1.485 Gbps, 2.967 Gbps, 2.97 Gbps - covers all SMPTE ST 259-C, ST 292, ST 424, DVB-ASI, and MADI standards. |
| Input Equalization | 0–60" FR4 per channel - enables direct connection to long backplane traces or cable equalizers without external compensation. |
| Output Jitter (2.97 Gbps) | 0.04–0.10 UIP-P - meets SMPTE ST 259/292/424 output jitter compliance for broadcast-grade re-timing. |
| Power Consumption | 58–75 mA @ 2.5 V (100–145 mW) - supports low-power routing nodes; drops to 7–14 mA in device disable mode. |
| Eye Monitor Resolution | 64 × 64 point grid - provides quantitative eye opening assessment for incoming SDI signal integrity diagnostics. |
| Supply Voltage | 2.375–2.625 V - single 2.5 V rail with ±5% tolerance; no auxiliary supplies required. |
| Operating Temperature | −40°C to +85°C - qualified for industrial broadcast equipment environments including rack-mounted switchers. |
Pinout & Package
LMH0376SQ/NOPB uses a 48-pin WQFN package (7 mm × 7 mm, 0.5 mm pitch) with exposed die attach pad (DAP) connected to VEE (ground). Pin functions differ between pin mode (SPI_EN = GND) and SPI mode (SPI_EN = VCC); dual-function pins include BYPASS/MOSI, MUTE/SCK, SCO_EN/SS, and VEE/MISO.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SDI0–SDI3 (differential pairs) | Serial data inputs | Four internally 100 Ω terminated SDI channels with independent FR4 equalization and signal detect; rail-to-rail common-mode range supports DC coupling. |
| SDO0 / SDO1 (differential pairs) | Reclocked or bypassed outputs | Dual LVDS outputs support reclocked data, recovered clock (SDO1 only), or bypassed data; each configurable for swing, de-emphasis, polarity, and power-down via SPI. |
| ENABLE, BYPASS, MUTE, SEL0/SEL1, RATE0/RATE1 | Control inputs | LVCMOS logic pins with internal pullups/pulldowns; define operating mode, input selection, and functional enable/disable states in pin mode. |
| LOCK_DETECT, SD/HD, SCO_EN | Status and configuration outputs | LOCK_DETECT indicates PLL lock status; SD/HD reports locked rate class; SCO_EN selects SDO1 as clock or data output. |
| LF1/LF2 | Analog loop filter | Connect 56 nF capacitor between LF1 and LF2 to set PLL loop dynamics per data rate; critical for stable CDR operation. |
| VCC / VEE / DAP | Power and ground | VCC = 2.5 V supply (13 pins); VEE = ground (23 pins); DAP = primary thermal and electrical ground - must be soldered to PCB ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| 4:1 Input Multiplexer with Per-Channel Equalization | Enables flexible source switching in video routers while compensating for trace-length mismatch across four independent SDI paths up to 60" FR4. |
| 64 × 64 Point Eye Opening Monitor | Provides real-time, pixel-level eye diagram visualization for incoming signal health - used for field diagnostics and link margin validation. |
| Dual LVDS Outputs with Programmable De-Emphasis | Supports up to 40" FR4 trace loss compensation via selectable 0/3/5/7 dB de-emphasis - eliminates need for external post-driver equalization. |
| SPI-Configurable Output Swing and Common-Mode Voltage | Adjusts SDO0/SDO1 differential swing (400–800 mVP-P) and offset (0.8–1.2 V) to match downstream receiver thresholds across varied board stack-ups. |
| Reference-Less or 27 MHz External Reference Operation | Eliminates crystal dependency in space-constrained designs while retaining full SMPTE compliance; external reference improves long-term stability for master timing applications. |
| Footprint Compatibility with LMH0356 | Enables drop-in upgrade path from legacy reclocker in pin mode - same 48-pin WQFN layout and pin assignments for SDI inputs/outputs/control signals. |
Applications
| Broadcast Video Router | HD/SD Distribution Amplifier |
|---|---|
|
Use Scenario: Aggregating and switching multiple SDI camera feeds in a 3G-SDI production truck with mixed data rates (HD, 3G, SD). IC Role / Device Role / Timing Role: Reclocking and jitter cleaning of incoming SDI streams prior to matrix switching; 4:1 mux selects active source under control of FPGA logic. Use Value: Ensures clean, low-jitter outputs to downstream encoders and monitors - prevents frame sync loss and lip-sync errors across heterogeneous source timing domains. |
Use Scenario: Fan-out of a single 3G-SDI program feed to 16 studio monitors and recording devices over varying PCB trace lengths. IC Role / Device Role / Timing Role: Retiming and driving SDI signals with adaptive de-emphasis to compensate for 0–40" FR4 losses on multilayer backplanes. Use Value: Maintains SMPTE-compliant eye opening at all outputs - eliminates need for discrete driver ICs or external equalizers per channel. |
| Studio Switcher Input Stage | MADI-to-SDI Bridge Interface |
|
Use Scenario: Conditioning SDI inputs in a 48-channel live production switcher where signal integrity varies due to cable length and connector wear. IC Role / Device Role / Timing Role: Input-stage reclocking with per-channel signal detect and eye monitoring - flags marginal links before they cause blackouts or artifacts. Use Value: Enables predictive maintenance and real-time signal health reporting via SPI-read eye metrics - reduces unplanned airtime outages. |
Use Scenario: Converting 125 Mbps MADI audio transport to embedded SDI for synchronized audio/video playout in broadcast automation systems. IC Role / Device Role / Timing Role: Transparent reclocking of MADI stream into SDI-compatible timing domain while preserving embedded audio payload structure. Use Value: Achieves bit-accurate MADI-to-SDI conversion without protocol translation - avoids audio sample loss or lip-sync drift in master control rooms. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SDI reclocking applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMH0356SQ/NOPB | Single-input, no eye monitor, no 4:1 mux, fixed 270 Mbps–2.97 Gbps operation; identical 48-pin WQFN footprint and pin mode compatibility. | Lacks input multiplexing and diagnostic visibility - suitable only for point-to-point reclock paths without source selection or signal health analysis. | Select when upgrading legacy LMH0356-based designs with minimal layout change; avoid if eye monitoring or multi-source routing is required. |
| GS2971A-IBE3 | Single 3G-SDI input, integrated cable driver, no built-in equalizer, supports SMPTE ST 2081 (UHD-SDI), requires external reference clock. | Optimized for UHD-SDI transmission with driver output; lacks input mux and eye monitor - targets transmitter-side, not receiver-side, signal conditioning. | Select for UHD-SDI transmitter applications requiring cable drive; not interchangeable for SDI receiver-side reclocking with diagnostics. |
Compared with LMH0376SQ/NOPB, LMH0356SQ/NOPB offers footprint compatibility but omits multiplexing and diagnostics, while GS2971A-IBE3 targets UHD transmission with driver capability but lacks input flexibility and monitoring - making LMH0376SQ/NOPB uniquely suited for multi-source, diagnostic-aware broadcast routing.
Availability
LMH0376SQ/NOPB is available at Aetrix Electronics and suitable for broadcast video routers, HD/SD distribution amplifiers, and studio switcher input stages requiring stable component supply, long-lifecycle assurance, and SMPTE-compliant signal integrity.
Supply support for LMH0376SQ/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 specializing in analog, embedded processing, and high-speed interface solutions for industrial, automotive, and communications markets.
The LMH0376SQ/NOPB belongs to TI's broadcast video interface product line, engineered specifically for SMPTE-compliant SDI signal conditioning in professional video infrastructure - emphasizing jitter suppression, multi-rate flexibility, and real-time diagnostics.
FAQ
What data rates does the LMH0376SQ/NOPB support?
The LMH0376SQ/NOPB supports six discrete serial data rates: 125 Mbps (MADI), 270 Mbps (SD-SDI/DVB-ASI), 1.4835 Gbps and 1.485 Gbps (HD-SDI), and 2.967 Gbps and 2.97 Gbps (3G-SDI). It automatically detects and locks to any of these rates without external configuration - a core requirement for mixed-format broadcast environments where LMH0376SQ/NOPB is deployed.
Does the LMH0376SQ/NOPB require an external crystal?
No, the LMH0376SQ/NOPB operates in reference-less mode by default, recovering clock directly from the incoming SDI data stream. An external 27 MHz crystal is optional and only needed when enhanced long-term frequency stability is required - for example, in master timing applications where LMH0376SQ/NOPB serves as a precision reference node.
How does the 4:1 input multiplexer work in the LMH0376SQ/NOPB?
The LMH0376SQ/NOPB's 4:1 mux selects one of four differential SDI inputs (SDI0–SDI3) using either hardware pins (SEL0/SEL1) or SPI register control. Each input has independent FR4 equalization (0–60") and signal detection. In SPI mode, secondary input selection allows independent routing of one channel to the eye monitor or SDO1 bypass output - a capability unique to LMH0376SQ/NOPB among TI's reclocker family.
Can the LMH0376SQ/NOPB outputs drive long PCB traces?
Yes - the LMH0376SQ/NOPB's LVDS outputs support programmable de-emphasis (0/3/5/7 dB) to compensate for up to 40" of FR4 trace loss. Combined with adjustable swing (400–800 mVP-P) and common-mode voltage (0.8–1.2 V), this ensures robust signal integrity across varied board stack-ups without external drivers - a key design advantage of LMH0376SQ/NOPB in dense video routing cards.
Is the LMH0376SQ/NOPB pin-compatible with other TI reclockers?
Yes - in pin mode (SPI_EN = GND), the LMH0376SQ/NOPB is footprint compatible with the LMH0356SQ/NOPB, sharing identical 48-pin WQFN packaging and matching pin assignments for SDI inputs, LVDS outputs, power, ground, and core control signals. This enables direct mechanical replacement and simplified migration paths in existing designs using LMH0376SQ/NOPB.
LMH0376SQ/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 48-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Reclocker
- Applications:
- Professional Video
- Standards:
- DVB-ASI, SMPTE
- Control Interface:
- Serial, SPI
- Voltage - Supply:
- 2.375V ~ 2.625V
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 48-WQFN (7x7)
LMH0376SQ/NOPB FAQ
1.How can I place an order for LMH0376SQ/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMH0376SQ/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 LMH0376SQ/NOPB reliable?
The price and inventory of LMH0376SQ/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMH0376SQ/NOPB is usually 5 days.
3.What payment methods are accepted for LMH0376SQ/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMH0376SQ/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMH0376SQ/NOPB?
LMH0376SQ/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMH0376SQ/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 LMH0376SQ/NOPB?
For technical support, including LMH0376SQ/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMH0376SQ/NOPB requirements.
6.How does Aetrix verify that LMH0376SQ/NOPB is sourced from the original manufacturer or authorized distributors?
All LMH0376SQ/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 LMH0376SQ/NOPB meets industry standards.
7.What is the process for return or replacement of LMH0376SQ/NOPB?
All LMH0376SQ/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMH0376SQ/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 LMH0376SQ/NOPB part is unused and in its original packaging.
Return procedure for LMH0376SQ/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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