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Texas Instruments LMH0366SQX/NOPB
- Part No.:
- LMH0366SQX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Video Processing
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
LMH0366SQX/NOPB.pdf
- Description:
- IC VIDEO RECLOCKER 24WQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,298
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Product details
Overview
LMH0366SQX/NOPB from Texas Instruments is a 3 Gbps SMPTE ST 424/ST 292/ST 259-C compliant HD/SD SDI reclocker with integrated 64×64 eye monitor, supporting data rates from 125 Mbps to 2.97 Gbps, featuring dual LVDS outputs, input FR4 equalization up to 60", and 100 mW typical power consumption at 2.5 V supply. It is used in broadcast video routers and distribution amplifiers to suppress accumulated jitter in serial digital video links.
For engineers reviewing the LMH0366SQX/NOPB datasheet, LMH0366SQX/NOPB pinout, LMH0366SQX/NOPB application, or LMH0366SQX/NOPB equivalent, key selection considerations include its automatic multi-rate lock detection (125/270/1483.5/1485/2967/2970 Mbps), programmable output de-emphasis (0–7 dB), rail-to-rail input common mode range, SPI-configurable eye monitor, and dual-mode operation (pin control or SPI register access).
Technical Context
The LMH0366SQX/NOPB implements a CDR-based reclocking architecture with a PLL loop bandwidth of 220 kHz (270 Mbps), 0.9 MHz (1485 Mbps), or 1.7 MHz (2970 Mbps), enabling precise jitter suppression across SD, HD, and 3G-SDI standards. It integrates an FR4-input equalizer with programmable boost for up to 60" trace compensation and supports both referenceless operation and 27 MHz external crystal reference for exact rate discrimination (e.g., 1.485 vs. 1.4835 Gbps).
Its dual LVDS outputs (SDO0/SDO1) support flexible signal routing - reclocked data, recovered clock, or bypassed data - with independent control of swing (400–800 mVP-P), offset (0.8–1.2 V), de-emphasis (0–7 dB), polarity inversion, and power-down via SPI registers. The device operates over −40°C to +85°C with internal 100 Ω termination on both input and outputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate Support | 125/270/1483.5/1485/2967/2970 Mbps - covers MADI, DVB-ASI, SD-SDI, HD-SDI, and 3G-SDI standards |
| Input Equalization | 0–60" FR4 trace compensation - enables direct connection after long PCB traces or cable equalizers like LMH0394 |
| Output De-Emphasis | 0/3/5/7 dB programmable per channel - compensates for up to 40" FR4 loss without external components |
| Eye Monitor Resolution | 64 × 64 point real-time eye opening analysis - provides quantitative signal integrity feedback for system debug |
| Power Consumption | 100 mW typical (145 mW max with both outputs enabled) - enables low-power broadcast infrastructure designs |
| Supply Voltage | Single 2.5 V ±5% - simplifies power delivery and reduces noise coupling vs. mixed-supply alternatives |
| Operating Temperature | −40°C to +85°C - qualified for industrial and broadcast equipment deployed in uncontrolled environments |
Pinout & Package
LMH0366SQX/NOPB uses a 24-pin WQFN package (RTW0024A) 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-mode pins include RATE0/RATE1 (GPIO0/GPIO1), BYPASS/MOSI, MUTE/SCK, SCO_EN/SS, and VEE/MISO.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 24 | RATE0, RATE1 (pin mode) / GPIO0, GPIO1 (SPI mode) | Selects supported data rates or serves as general-purpose I/O when SPI configured |
| 2, 3 | SDI, SDI | Differential SDI input with 100 Ω internal termination and rail-to-rail common mode range |
| 4 | ENABLE | Active-high enable with internal pullup - powers down device consuming ≤14 mA when low |
| 5, 6 | BYPASS / MUTE (pin mode) or MOSI / SCK (SPI mode) | Reclocker bypass control or SPI serial interface signals - function depends on SPI_EN state |
| 7 | SPI_EN | Mode select: GND = pin control, VCC = SPI register access - determines pin functionality mapping |
| 8, 10 | XTAL_IN / XTAL_OUT | 27 MHz external reference interface - optional for precise rate discrimination (e.g., 2970 vs. 2967 Mbps) |
| 11 | LOCK_DETECT | Active-high PLL lock status indicator - asserts only during valid reclock operation (not in bypass) |
| 13, 14 / 16, 17 | SDO1, SDO1 / SDO0, SDO0 | Dual differential LVDS outputs with programmable swing, offset, de-emphasis, and polarity |
| 18 | SD/HD | Rate-range indicator: high = SD, low = HD/3G - aids system-level rate identification without SPI read |
| 15 | VCC | 2.5 V positive supply - requires local 2.5 V regulation and decoupling |
| DAP, 9, 12, 20, 21, 22, 23 | VEE | Ground reference - DAP must be soldered to PCB ground plane for thermal and electrical performance |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 64×64 eye monitor | Enables real-time signal integrity assessment without external test equipment - critical for field-deployed broadcast gear validation |
| Programmable output de-emphasis (0–7 dB) | Compensates for board trace losses up to 40" FR4 - eliminates need for discrete de-emphasis ICs or layout redesign |
| Referenceless or 27 MHz external reference operation | Supports both simplified system design (no crystal) and precise rate discrimination (e.g., 1485 vs. 1483.5 Gbps) |
| Dual LVDS outputs with independent configuration | Allows simultaneous reclocked data + recovered clock routing - reduces component count in SDI repeaters and routers |
| Input FR4 equalization up to 60" | Extends reach of backplane or motherboard traces - enables direct interface after long runs or adaptive equalizers |
| SPI register access with daisy-chain capability | Permits centralized configuration and monitoring of multiple LMH0366SQX/NOPB devices - simplifies firmware integration in complex video systems |
Applications
| Broadcast Video Router | HD/3G-SDI Distribution Amplifier |
|---|---|
Use Scenario: Signal regeneration across 32×32 crosspoint matrix with >10 cascaded stages. IC Role / Device Role / Timing Role: Reclocker suppressing accumulated jitter from upstream equalizers and long traces while providing clean, retimed outputs. Use Value: Maintains SMPTE ST 424 compliance at 2.97 Gbps after 8+ hops - prevents bit errors and frame sync loss in live production. |
Use Scenario: Fan-out of single HD-SDI source to 16 monitors in OB van with mixed cable lengths (10–100 m). IC Role / Device Role / Timing Role: Jitter-cleaning reclocker with dual outputs driving coax drivers and embedded audio extractors. Use Value: Enables simultaneous distribution to legacy SDI monitors and modern IP-based decoders without signal degradation. |
| Studio Camera Control Interface | Medical Imaging Video Pipeline |
Use Scenario: Bidirectional camera control over same SDI cable carrying 1080p60 video using HANC/VANC. IC Role / Device Role / Timing Role: Reclocker ensuring stable clock recovery for embedded metadata extraction and return-channel timing. Use Value: Guarantees accurate HANC packet alignment and low-latency control response despite variable cable-induced jitter. |
Use Scenario: Endoscopic video chain from CMOS sensor through FPGA processing to display, requiring deterministic latency. IC Role / Device Role / Timing Role: Low-jitter reclocker placed post-FPGA to restore signal integrity before HDMI conversion. Use Value: Reduces end-to-end jitter to <0.1 UIP-P - meets DICOM display timing requirements for diagnostic accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SDI reclocking applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMH0384SQX/NOPB | Single-output reclocker with identical rate support and eye monitor, but no recovered clock output or SCO_EN function | Limited to single-path fanout; cannot provide recovered clock for downstream clock domain synchronization | Select when system requires only one reclocked output and lower BOM cost is prioritized over flexibility |
| GS2971-IBE3 | Pin-compatible 3G-SDI reclocker with integrated cable driver, higher 160 mW power draw, and no eye monitor | Designed for direct coax drive; lacks real-time eye analysis capability required for signal debugging | Select when driving >100 m coax directly without external driver, and eye monitoring is not needed for validation |
Compared with LMH0366SQX/NOPB, LMH0384SQX/NOPB reduces output flexibility but lowers cost and power, while GS2971-IBE3 adds cable drive capability at the expense of eye visibility and higher quiescent current - choice depends on whether recovered clock routing, debug visibility, or direct coax drive is the dominant system requirement.
Availability
LMH0366SQX/NOPB is available at Aetrix Electronics and suitable for broadcast video routers, HD/3G-SDI distribution amplifiers, and studio camera control interfaces requiring stable component supply, long-lifecycle support, and guaranteed traceability.
Supply support for LMH0366SQX/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 connectivity technologies for industrial, automotive, and communications markets.
The LMH0366SQX/NOPB belongs to TI's high-speed serial interface product line, engineered specifically for SMPTE-compliant broadcast video infrastructure where jitter tolerance, signal integrity visibility, and multi-standard interoperability are critical.
FAQ
What data rates does the LMH0366SQX/NOPB support?
The LMH0366SQX/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 incoming rate and locks within 1 ms (synchronous) or 25 ms (asynchronous), with optional 27 MHz external reference enabling precise discrimination between closely spaced rates like 1.485 vs. 1.4835 Gbps.
How does the LMH0366SQX/NOPB handle input signal integrity on long PCB traces?
The LMH0366SQX/NOPB includes an integrated FR4 equalizer capable of compensating for up to 60 inches of FR4 trace loss on its differential SDI input. This allows direct connection after long backplane runs or after adaptive equalizers like the LMH0394. Equalizer boost can be enhanced via SPI register 0x11 bit 1 (EQ_BOOST_60) for traces exceeding 40 inches, ensuring robust signal recovery without external equalization circuitry.
Can the LMH0366SQX/NOPB output both reclocked data and the recovered clock simultaneously?
Yes - the LMH0366SQX/NOPB provides two independent LVDS outputs (SDO0 and SDO1). By configuring the SCO_EN control (pin or SPI register 0x12 bit 0), the SDO1 output can be set to deliver the recovered serial clock while SDO0 carries reclocked data. This dual-signal capability enables clock-domain isolation in FPGA-based video processors and simplifies timing alignment in multi-stage distribution systems.
What is the purpose of the integrated 64×64 eye monitor in the LMH0366SQX/NOPB?
The 64×64 eye monitor in the LMH0366SQX/NOPB provides real-time, pixel-level visualization of the incoming SDI signal's eye diagram - directly accessible via SPI without external test equipment. It supports system-level validation of signal integrity, troubleshooting of intermittent link failures, and verification of equalizer settings during development and field service, significantly reducing debug time in broadcast infrastructure deployments.
Does the LMH0366SQX/NOPB require an external crystal to operate?
No - the LMH0366SQX/NOPB supports referenceless operation and will lock to any supported data rate without external components. However, connecting a 27 MHz crystal or clock to XTAL_IN/XTAL_OUT enables precise rate discrimination (e.g., distinguishing 2970 Mbps from 2967 Mbps), which is essential for compliance testing and interoperability with professional broadcast equipment that transmits rate-variant signals.
LMH0366SQX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 24-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Reclocker
- Applications:
- Professional Video
- Standards:
- DVB-ASI, MADI, SMPTE
- Control Interface:
- Serial, SPI
- Voltage - Supply:
- 2.375V ~ 2.625V
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 24-WQFN (4x4)
LMH0366SQX/NOPB FAQ
1.How can I place an order for LMH0366SQX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMH0366SQX/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 LMH0366SQX/NOPB reliable?
The price and inventory of LMH0366SQX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMH0366SQX/NOPB is usually 5 days.
3.What payment methods are accepted for LMH0366SQX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMH0366SQX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMH0366SQX/NOPB?
LMH0366SQX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMH0366SQX/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 LMH0366SQX/NOPB?
For technical support, including LMH0366SQX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMH0366SQX/NOPB requirements.
6.How does Aetrix verify that LMH0366SQX/NOPB is sourced from the original manufacturer or authorized distributors?
All LMH0366SQX/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 LMH0366SQX/NOPB meets industry standards.
7.What is the process for return or replacement of LMH0366SQX/NOPB?
All LMH0366SQX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMH0366SQX/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 LMH0366SQX/NOPB part is unused and in its original packaging.
Return procedure for LMH0366SQX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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