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Texas Instruments LMH0376SQX/NOPB
- Part No.:
- LMH0376SQX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Video Processing
- Package:
- 48-WFQFN Exposed Pad
- Datasheet:
-
LMH0376SQX/NOPB.pdf
- Description:
- IC VIDEO RECLOCKER 48WQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,064
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Product details
Overview
LMH0376SQX/NOPB from Texas Instruments is a 3 Gbps HD/SD SDI low-power reclocker with integrated 4:1 input multiplexer, 64×64 eye monitor, and dual LVDS outputs. It retimes SMPTE ST 424/292/259-C–compliant serial video data at 125 Mbps to 2.97 Gbps, suppresses accumulated jitter via clock recovery, and supports DVB-ASI and MADI protocols in broadcast routing infrastructure.
For engineers reviewing the LMH0376SQX/NOPB datasheet, LMH0376SQX/NOPB pinout, LMH0376SQX/NOPB application, or LMH0376SQX/NOPB equivalent, key selection considerations include multi-rate SDI reclocking capability, FR4 equalization up to 60", programmable de-emphasis (0–7 dB), SPI-configurable eye monitoring, and footprint compatibility with LMH0356 in pin mode.
Technical Context
The LMH0376SQX/NOPB implements a PLL-based clock and data recovery (CDR) architecture with automatic data rate detection across six discrete rates (125/270 Mbps, 1.4835/1.485 Gbps, 2.967/2.97 Gbps). Its CDR loop bandwidth scales with data rate-350 kHz at 270 Mbps, 2.0 MHz at 1.485 Gbps, and 3.5 MHz at 2.97 Gbps-to maintain optimal jitter transfer and suppression.
It integrates four independently equalized SDI inputs with rail-to-rail common-mode voltage support and internal 100 Ω termination, plus two programmable LVDS outputs supporting reclocked data, recovered clock (on SDO1), or bypassed data. The device operates in pin mode (LMH0356-compatible) or SPI mode for full register-level control of eye monitor, signal detect thresholds, GPIO mapping, and power-down states.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate Support | 125 Mbps, 270 Mbps, 1.4835 Gbps, 1.485 Gbps, 2.967 Gbps, 2.97 Gbps - enables single-device support for SD, HD, and 3G-SDI broadcast standards |
| Input Equalization Range | 0–60" FR4 trace - compensates for PCB interconnect loss without external equalizers |
| Output De-Emphasis | 0 dB / 3 dB / 5 dB / 7 dB - matches driver output to trace loss up to 40" FR4 |
| Eye Monitor Resolution | 64 × 64 point sampling - provides real-time eye opening analysis for signal integrity validation |
| Power Consumption | 58–75 mA @ 2.5 V - enables low-thermal design in dense video routing cards |
| Supply Voltage | 2.375–2.625 V - tight tolerance ensures stable operation under noisy broadcast power rails |
| Operating Temperature | −40°C to +85°C - qualified for industrial-grade broadcast equipment deployment |
Pinout & Package
LMH0376SQX/NOPB is housed in a 48-pin WQFN package (7 mm × 7 mm, 0.5 mm pitch) with exposed die attach pad (DAP) connected to VEE. 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 independent SMPTE-compliant SDI inputs with internal 100 Ω termination and per-channel signal detect |
| SDO0, SDO1 (differential pairs) | LVDS serial outputs | Dual reclocked/bypassed data outputs; SDO1 optionally delivers recovered clock |
| ENABLE | Global device enable | Active-high control with internal pullup; disables all circuitry when low to reduce quiescent current to 7–14 mA |
| LOCK_DETECT | PLL lock status indicator | Active-high open-drain output signaling valid CDR lock; inactive during bypass or unlock |
| SEL0, SEL1 | Input channel select | Binary-coded selection of active SDI input (00=SDI0, 11=SDI3); internal pulldowns default to SDI0 |
| XTAL_IN / XTAL_OUT | 27 MHz reference interface | Supports external crystal or clock; reference-less operation enabled by grounding XTAL_IN |
| LF1, LF2 | PLL loop filter terminals | Require external 56 nF capacitor; sets loop dynamics for jitter transfer function |
Key Features
| Feature | Design Value |
|---|---|
| 4:1 Input Multiplexer with Per-Channel Equalization | Enables flexible source switching in video routers while maintaining signal integrity across all four SDI inputs |
| Programmable Output Swing & Common Mode | SDO0/SDO1 swing adjustable from 400–800 mVP-P; offset voltage selectable from 0.8–1.2 V for LVDS interface matching |
| Integrated 64×64 Eye Monitor | Real-time eye diagram capture without external test equipment-critical for field-deployed broadcast diagnostics |
| SPI Register Access with GPIO Mapping | Configures eye monitor, signal detect thresholds, output polarity, and repurposes pins 45–48 as GPIO0–GPIO3 |
| Low-Power Operation Modes | Single-output active + low-power settings reduce supply current to 40–55 mA; full shutdown draws ≤14 mA |
Applications
| Broadcast Video Router | HD/3G-SDI Distribution Amplifier |
|---|---|
Use Scenario: Aggregating and switching multiple SDI camera feeds in live production trucks or OB vans. IC Role / Device Role / Timing Role: Reclocks incoming SDI streams to eliminate jitter accumulation across cascaded routing stages and ensures clean signal delivery to downstream encoders or monitors. Use Value: Maintains SMPTE compliance across 4-input mux and dual-output fanout, enabling deterministic timing in high-density router blades. |
Use Scenario: Replicating a single HD-SDI source to multiple display walls or recording systems in broadcast studios. IC Role / Device Role / Timing Role: Acts as a jitter-cleansing repeater with programmable de-emphasis to drive long backplane traces or multiple coaxial outputs. Use Value: Compensates for up to 40" FR4 loss on PCBs and supports simultaneous 3G-SDI distribution without external equalizers. |
| SDI Signal Integrity Analyzer | MADI/DVB-ASI Bridge Interface |
Use Scenario: Embedded diagnostics in field-deployable SDI test instruments or self-monitoring video processors. IC Role / Device Role / Timing Role: Provides real-time 64×64 eye opening measurement on selected input channel, feeding diagnostic data via SPI to host MCU. Use Value: Eliminates need for external oscilloscopes during system bring-up or remote troubleshooting of SDI links. |
Use Scenario: Converting between professional audio (MADI at 125 Mbps) and broadcast video (DVB-ASI at 270 Mbps) domains in media servers. IC Role / Device Role / Timing Role: Reclocks and retimes non-SDI serial protocols using same CDR engine, leveraging identical jitter suppression architecture. Use Value: Enables protocol-agnostic serial data retiming in hybrid broadcast-audio infrastructure with shared hardware platform. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SDI reclocking applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMH0356SQX/NOPB | Pin-compatible predecessor; lacks eye monitor, SPI interface, and secondary input select; fixed 1.485/2.97 Gbps only | Targeted at cost-sensitive, fixed-rate SDI repeaters without diagnostic or multi-protocol needs | Select when footprint compatibility is mandatory and advanced features are unnecessary |
| GS2971-IBE3 | Supports SMPTE ST 2081 (12G-SDI); includes built-in cable driver; requires external reference clock; no integrated eye monitor | Designed for next-gen 12G-SDI infrastructure with longer coax runs; higher power and BOM cost | Select for future-proof 12G-SDI systems where 3G-SDI backward compatibility is required |
Compared with LMH0356SQX/NOPB, the LMH0376SQX/NOPB adds diagnostic visibility and protocol flexibility; compared with GS2971-IBE3, it offers lower power and integrated monitoring at the expense of 12G-SDI readiness-making LMH0376SQX/NOPB optimal for mid-generation HD/3G-SDI broadcast gear requiring field serviceability.
Availability
LMH0376SQX/NOPB is available at Aetrix Electronics and suitable for broadcast video routers, HD/3G-SDI distribution amplifiers, and embedded SDI signal integrity analyzers requiring stable component supply across extended product lifecycles.
Supply support for LMH0376SQX/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 LMH0376SQX/NOPB belongs to TI's high-speed serial interface product line, engineered specifically for SMPTE-compliant broadcast video infrastructure requiring jitter-cleansing, multi-source switching, and real-time signal health monitoring.
FAQ
What data rates does the LMH0376SQX/NOPB support for SMPTE-compliant SDI operation?
The LMH0376SQX/NOPB supports six discrete serial data rates: 125 Mbps (MADI), 270 Mbps (SMPTE ST 259-C/DVB-ASI), 1.4835 Gbps and 1.485 Gbps (SMPTE ST 292), and 2.967 Gbps and 2.97 Gbps (SMPTE ST 424). It automatically detects and locks to any of these rates without external configuration, making LMH0376SQX/NOPB ideal for mixed-format broadcast environments where SD, HD, and 3G-SDI signals coexist.
How does the integrated eye monitor in the LMH0376SQX/NOPB function, and what is its resolution?
The LMH0376SQX/NOPB features a dedicated 64 × 64 point eye opening monitor that samples the incoming SDI signal at programmable locations across the unit interval. It operates only in SPI mode and provides real-time eye diagram data via register reads-enabling embedded diagnostics without external test equipment. This capability is unique to LMH0376SQX/NOPB within its family and directly supports field-serviceable broadcast hardware.
Can the LMH0376SQX/NOPB operate without an external 27 MHz reference clock?
Yes, the LMH0376SQX/NOPB supports reference-less operation. When XTAL_IN is grounded, the device uses its internal oscillator for PLL reference generation. This eliminates the need for an external crystal or clock source, simplifying board layout and reducing BOM count-while still meeting SMPTE jitter specifications across all supported data rates. Reference-less mode is fully functional in both pin and SPI modes of LMH0376SQX/NOPB.
What is the maximum FR4 trace length the LMH0376SQX/NOPB can equalize on its inputs, and how is it configured?
The LMH0376SQX/NOPB equalizes up to 60 inches of FR4 trace on each of its four SDI inputs. Equalization strength is configurable via SPI register 0x11 bit 1 (EQ_BOOST_60): setting this bit enables additional boost for traces >40", while default settings optimize for shorter lengths. The equalizer is active per-channel and independent-allowing mixed trace-length inputs without cross-talk or performance degradation in LMH0376SQX/NOPB applications.
Does the LMH0376SQX/NOPB provide both reclocked and bypassed output options, and how are they selected?
Yes, the LMH0376SQX/NOPB offers both reclocked and bypassed outputs. In pin mode, the BYPASS pin (active-high) enables full bypass of the CDR path, routing raw input to both SDO0 and SDO1. In SPI mode, register 0x12 bit 2 controls bypass, and SDO1 can be independently configured via register 0x18 bits 1:0 to output bypassed data from any selected input channel-even different from the primary reclocked input. This dual-path flexibility is intrinsic to LMH0376SQX/NOPB's architecture.
LMH0376SQX/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)
LMH0376SQX/NOPB FAQ
1.How can I place an order for LMH0376SQX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMH0376SQX/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 LMH0376SQX/NOPB reliable?
The price and inventory of LMH0376SQX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMH0376SQX/NOPB is usually 5 days.
3.What payment methods are accepted for LMH0376SQX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMH0376SQX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMH0376SQX/NOPB?
LMH0376SQX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMH0376SQX/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 LMH0376SQX/NOPB?
For technical support, including LMH0376SQX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMH0376SQX/NOPB requirements.
6.How does Aetrix verify that LMH0376SQX/NOPB is sourced from the original manufacturer or authorized distributors?
All LMH0376SQX/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 LMH0376SQX/NOPB meets industry standards.
7.What is the process for return or replacement of LMH0376SQX/NOPB?
All LMH0376SQX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMH0376SQX/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 LMH0376SQX/NOPB part is unused and in its original packaging.
Return procedure for LMH0376SQX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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