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Texas Instruments LMH0384SQE/NOPB
- Part No.:
- LMH0384SQE/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Specialized
- Package:
- 16-WQFN Exposed Pad
- Datasheet:
-
LMH0384SQE/NOPB.pdf
- Description:
- IC INTERFACE SPECIALIZED 16WQFN
- Quantity:
- Payment:
- Shipping:
Inventory:208
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Product details
Overview
LMH0384SQE/NOPB from Texas Instruments is a 3-Gbps SDI adaptive cable equalizer designed for serial digital video signal recovery in broadcast and professional video systems. It equalizes up to 140 m of Belden 1694A coax at 2.97 Gbps, supports SMPTE ST 424/292/344/259 standards, implements DC restoration for pathological data, and operates from a single 3.3-V supply in a 16-pin WQFN package.
For engineers reviewing the LMH0384SQE/NOPB datasheet, LMH0384SQE/NOPB pinout, LMH0384SQE/NOPB application, or LMH0384SQE/NOPB equivalent, key selection considerations include cable-length-dependent jitter performance (0.2–0.35 UI), programmable LVDS output swing (400–800 mVP-P), SPI-configurable common-mode voltage (1.05–1.85 V), auto-sleep power-down (<14 mA), and dual-mode operation (pin-compatible with LMH0344 or SPI-programmable).
Technical Context
The LMH0384SQE/NOPB implements a multistage adaptive equalizer filter controlled by an external 1-µF AEC loop capacitor across AEC+ and AEC− pins, enabling real-time compensation for dispersive loss in coaxial media. Its DC restoration block fully restores baseline for SMPTE RP 178/198 pathological patterns without requiring external AC coupling.
Two functional modes are supported: pin mode (SPI_EN = GND) provides LMH0344 footprint compatibility and fixed-feature operation, while SPI mode (SPI_EN = VCC) enables register-level control of output swing, common-mode voltage, launch amplitude, and cable-length indication. Auto sleep activation (AUTO SLEEP = H) powers down the device within 200 µs when carrier detect (CD) asserts high.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate Range | 125 Mbps to 2.97 Gbps - supports SD, HD, and 3G-SDI video rates per SMPTE ST 259/292/344/424. |
| Cable Equalization | Up to 140 m Belden 1694A @ 2.97 Gbps - enables long-haul routing in broadcast infrastructure without repeaters. |
| Output Jitter | 0.2–0.35 UI - meets SMPTE RP 184/RP 192 requirements for clean eye opening after cable attenuation. |
| Supply Current | 10–14 mA in power-save mode - reduces thermal load and system power budget during idle periods. |
| Differential Output | LVDS, 100-Ω internally terminated - eliminates need for external termination resistors on PCB. |
| Input Return Loss | ≥10 dB (1.5–3.0 GHz) - maintains signal integrity and minimizes reflections on high-speed coax paths. |
| Operating Temperature | −40°C to +85°C - qualified for industrial and broadcast equipment deployed in uncontrolled environments. |
Pinout & Package
LMH0384SQE/NOPB is housed in a 4.00 mm × 4.00 mm, 16-pin WQFN (RUM) package with exposed die attach pad (DAP) electrically connected to VEE (ground). The DAP must be soldered to a ground plane for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 9, - (DAP) | VEE / Ground | Negative supply reference and thermal path; DAP requires low-impedance PCB ground connection. |
| 2, 3 | SDI / SDI | Differential true/complement serial data inputs - accept AC-coupled SDI signals with 75-Ω source impedance. |
| 4 | SPI_EN | Mode select: logic low enables pin mode (LMH0344 compatible); logic high enables SPI register access. |
| 5, 6 | AEC+, AEC− | Analog loop filter terminals - connect 1-µF capacitor to set adaptive equalizer bandwidth and convergence. |
| 7 (Pin Mode) / 7 (SPI Mode) | BYPASS / CD | Pin Mode: bypasses equalization; SPI Mode: carrier detect output indicating input signal presence. |
| 8, 14 | MUTEREF, MUTE | MUTEREF sets CD threshold voltage; MUTE forces LVDS outputs to logic zero - used together for automatic mute-on-loss. |
| 10, 11 | SDO, SDO | Differential LVDS outputs - internally terminated to 100 Ω, DC-coupled capable, swing and VOS programmable via SPI. |
| 12 (Pin Mode) / 12 (SPI Mode) | AUTO SLEEP / MISO | Pin Mode: enables deep power-down on signal loss; SPI Mode: SPI data output (MISO) for register reads. |
| 13, 16 | VCC | +3.3-V supply - requires local 0.1-µF ceramic decoupling per pin per datasheet layout guidelines. |
| 15 | CD (Pin Mode) / SS (SPI Mode) | Pin Mode: carrier detect output; SPI Mode: SPI slave select input - internal pullup enables default pin-mode operation. |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive Equalization with External AEC Loop | 1-µF capacitor across AEC+/AEC− sets loop dynamics for stable convergence across cable lengths and data rates. |
| DC Restoration Block | Eliminates baseline wander on pathological SMPTE RP 178/198 video patterns without external AC coupling capacitors. |
| Programmable LVDS Output Swing | 400–800 mVP-P in 100-mV steps via SPI - matches input sensitivity of downstream reclockers or FPGAs. |
| Auto Sleep Power Management | Reduces ICC to 10–14 mA when no signal detected - enables energy-efficient operation in intermittent video streams. |
| Two-Mode Operation Architecture | Pin mode ensures drop-in replacement for LMH0344; SPI mode unlocks full configurability without hardware change. |
| Carrier Detect with Adjustable Threshold | MUTEREF input allows setting CD trip point to match specific cable loss profile - prevents false mute on marginal links. |
Applications
| Studio Camera Interface | Live Production Switcher Input |
|---|---|
Use Scenario: Long-distance SDI link from 4K camera head to base station over 120 m Belden 1694A coax. IC Role / Device Role / Timing Role: Adaptive equalizer restoring signal integrity and eye opening at 2.97 Gbps before reclocking. Use Value: Enables reliable 4K video transport without intermediate amplifiers, reducing latency and failure points in critical live feeds. |
Use Scenario: Input conditioning stage in multi-format production switcher accepting mixed SD/HD/3G-SDI sources. IC Role / Device Role / Timing Role: Standardized front-end equalization ensuring consistent signal quality across all input channels regardless of source cable length. Use Value: Eliminates manual gain/offset adjustments per input, simplifying firmware calibration and improving channel-to-channel timing alignment. |
| Outside Broadcast Truck | Medical Imaging Video Distribution |
Use Scenario: Mobile OB truck receiving signals from remote cameras via variable-length coax runs (50–140 m). IC Role / Device Role / Timing Role: Cable-length-agnostic equalizer with auto-sleep disabling unused inputs to conserve power during setup. Use Value: Reduces thermal load and extends battery runtime during field deployment while maintaining plug-and-play interoperability. |
Use Scenario: High-fidelity endoscopic video distribution over coax to multiple display and recording nodes in operating room. IC Role / Device Role / Timing Role: Signal conditioner preserving SMPTE-compliant jitter and rise/fall times for diagnostic-grade image fidelity. Use Value: Prevents edge smearing and timing-induced artifacts that could obscure fine anatomical detail in real-time video. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SDI equalizer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMH0344SQE/NOPB | Fixed-function, non-SPI, identical pinout and package - lacks programmable output swing, VOS, and cable-length indicator. | Best for legacy designs requiring drop-in replacement without firmware changes or advanced configuration. | Select LMH0344SQE/NOPB only if SPI control, auto-sleep, or output tuning are unnecessary. |
| GS2971-IBE3 | Single 1.8-V supply, integrated reclocker, supports 3G/HD/SD-SDI but no DC restoration - requires external AC coupling. | Suitable for low-power portable gear where reclocking and equalization are co-located, but not for pathological pattern handling. | Choose GS2971-IBE3 when system-level jitter cleanup is needed alongside equalization and board space is constrained. |
Compared with LMH0344SQE/NOPB, the LMH0384SQE/NOPB adds SPI configurability and power management at the cost of minor firmware integration effort; versus GS2971-IBE3, it delivers superior DC-coupled pathological pattern resilience and higher-voltage robustness, making it preferred for broadcast-grade reliability.
Availability
LMH0384SQE/NOPB is available at Aetrix Electronics and suitable for broadcast infrastructure, live production systems, and medical imaging equipment requiring stable component supply, long-term lifecycle support, and SMPTE-compliant signal integrity.
Supply support for LMH0384SQE/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 and embedded processing technologies, with broad expertise in high-speed interface solutions for video, communications, and industrial markets.
The LMH0384SQE/NOPB belongs to TI's high-speed SDI signal-conditioning portfolio, engineered specifically for broadcast and professional video equipment demanding SMPTE compliance, extended cable reach, and low-jitter signal recovery.
FAQ
What is the primary function of the LMH0384SQE/NOPB in an SDI signal chain?
The LMH0384SQE/NOPB functions as an adaptive cable equalizer that compensates for high-frequency loss in coaxial transmission lines. It restores degraded SDI signals-supporting 125 Mbps to 2.97 Gbps data rates-by dynamically adjusting equalization based on input signal characteristics. This ensures compliant eye diagrams and low jitter at the output of the LMH0384SQE/NOPB, enabling reliable reception by downstream reclockers or video processors.
Does the LMH0384SQE/NOPB require external passive components for basic operation?
Yes, the LMH0384SQE/NOPB requires two external 1-µF capacitors: one between AEC+ and AEC− pins to configure the adaptive equalizer loop, and AC-coupling capacitors on the SDI/SDI inputs (typically 100 nF). No external termination is needed on SDO/SDO outputs due to internal 100-Ω LVDS termination. All VCC pins require local 0.1-µF ceramic decoupling per the LMH0384SQE/NOPB layout guidelines.
How does auto sleep mode operate in the LMH0384SQE/NOPB, and what is its impact on system timing?
When AUTO SLEEP is driven high, the LMH0384SQE/NOPB enters deep power-down (<14 mA) within 200 µs of carrier detect (CD) asserting high (no input signal). It wakes automatically within 1 µs of valid signal detection. This behavior introduces negligible delay to active video paths and avoids interrupting frame sync or genlock timing-critical for broadcast applications where the LMH0384SQE/NOPB must remain transparent during signal transitions.
Can the LMH0384SQE/NOPB be used with non-coaxial media such as PCB traces or fiber interfaces?
Yes-the LMH0384SQE/NOPB equalizes any dispersive medium exhibiting frequency-dependent loss similar to coax, including long PCB traces or copper backplanes. It is not designed for direct fiber use but can condition signals driving electro-optical converters. Performance validation is required per media type, as jitter and equalization response depend on the specific channel transfer function applied to the LMH0384SQE/NOPB input.
What are the key differences between pin mode and SPI mode operation for the LMH0384SQE/NOPB?
In pin mode (SPI_EN = GND), the LMH0384SQE/NOPB behaves as a fixed-function device with dedicated pins for BYPASS, MUTE, and AUTO SLEEP-ensuring LMH0344 footprint compatibility. In SPI mode (SPI_EN = VCC), those pins repurpose to MOSI, MISO, SCK, and SS, enabling full register control of output swing, common-mode voltage, launch amplitude, and cable-length reporting-unlocking advanced system-level tuning without changing the LMH0384SQE/NOPB hardware layout.
LMH0384SQE/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-WQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Digital Interface
- Interface:
- SPI Serial
- Voltage - Supply:
- 3.135V ~ 3.465V
- Supplier Device Package:
- 16-WQFN (4x4)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
LMH0384SQE/NOPB FAQ
1.How can I place an order for LMH0384SQE/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMH0384SQE/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 LMH0384SQE/NOPB reliable?
The price and inventory of LMH0384SQE/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMH0384SQE/NOPB is usually 5 days.
3.What payment methods are accepted for LMH0384SQE/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMH0384SQE/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMH0384SQE/NOPB?
LMH0384SQE/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMH0384SQE/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 LMH0384SQE/NOPB?
For technical support, including LMH0384SQE/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMH0384SQE/NOPB requirements.
6.How does Aetrix verify that LMH0384SQE/NOPB is sourced from the original manufacturer or authorized distributors?
All LMH0384SQE/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 LMH0384SQE/NOPB meets industry standards.
7.What is the process for return or replacement of LMH0384SQE/NOPB?
All LMH0384SQE/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMH0384SQE/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 LMH0384SQE/NOPB part is unused and in its original packaging.
Return procedure for LMH0384SQE/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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