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Texas Instruments LMH0307SQX/NOPB
- Part No.:
- LMH0307SQX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Video Processing
- Package:
- 16-WQFN Exposed Pad
- Datasheet:
-
LMH0307SQX/NOPB.pdf
- Description:
- IC VIDEO DRIVER 16WQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,540
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Product details
Overview
LMH0307SQX/NOPB from Texas Instruments is a 3 Gbps SMPTE-compliant dual-output SDI cable driver IC for broadcast video distribution. It delivers complementary 75Ω outputs, supports 2.97 Gbps data rates (SMPTE 424M/292M/344M/259M), integrates cable detect and loss-of-signal detection, and operates from a single 3.3V supply in digital video routers and distribution amplifiers.
For engineers reviewing the LMH0307SQX/NOPB datasheet, LMH0307SQX/NOPB pinout, LMH0307SQX/NOPB application, or LMH0307SQX/NOPB equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, confirmed alternative parts with documented differences, and supply support for broadcast infrastructure BOMs.
Technical Context
The LMH0307SQX/NOPB implements two current-mode output drivers with independently controllable slew rate (via SD/HD pin or SMBus) to meet SMPTE 259M (SD) or SMPTE 424M/292M (HD) rise/fall time requirements. Its differential input accepts either true/complement or single-ended signals with internal termination handling.
Intelligent diagnostics include loss-of-signal (LOS) detection at the input and cable termination fault detection per output channel, both accessible and maskable via an SMBus interface (default 7-bit address 0x17). The FAULT pin aggregates unmasked events as an open-drain flag for system-level fault reporting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | Up to 2.97 Gbps - supports full SMPTE 424M (1080p60) and SMPTE 292M (1080i) video streams without retiming. |
| Output Type | Dual complementary 75Ω current-mode outputs - drives coaxial cable directly with AC coupling; no external line drivers needed. |
| Slew Rate Control | Selectable via SD/HD pin: 400–800 ps (HD mode) or 90–130 ps (SD mode) - ensures compliance with SMPTE 424M/292M or SMPTE 259M eye diagram masks. |
| Cable Detect | Per-output termination sensing - detects local 75Ω termination on SDO0/SDO1; asserts FAULT if amplitude exceeds threshold due to unterminated cable. |
| Power Consumption | 275 mW typical in HD mode, 4 mW in deep power-save mode - ENABLE pin or SMBus-controlled power-down reduces thermal load during idle or fault conditions. |
| SMBus Interface | Default 7-bit address 0x17, 10–100 kHz operation - enables dynamic register configuration including output amplitude (±10% in 5 mV steps), power-down per channel, and fault masking. |
| Operating Temp | −40°C to +85°C - qualified for industrial-grade broadcast equipment deployed in live production environments. |
Pinout & Package
LMH0307SQX/NOPB uses the 4 mm × 4 mm 16-pin WQFN package (RUM), thermally enhanced with exposed die attach pad connected to VEE (ground). Pin assignments are validated per TI SNLS286I Rev I datasheet Figure 1 and PIN DESCRIPTIONS table.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | SDI / SDI | Differential serial data input - accepts true/complement SDI signal; single-ended use requires proper termination of unused pin. |
| 4 | RREF | Bias reference terminal - connects to 750Ω resistor tied to VCC; sets output current and voltage swing (800 mVP-P into 75Ω). |
| 5 | RSTI | Active-low reset input - internal pullup; forces device into default register state and pulls RSTO low; used for SMBus address daisy-chaining. |
| 6 | ENABLE | Active-low output driver enable - internal pullup; drives both SDO0/SDO1 outputs into deep power-save (4 mW) when low. |
| 7, 8 | SDA / SCL | SMBus bidirectional data / clock - open-drain, require external pullups; support read/write to 8 registers for configuration and status monitoring. |
| 10 | SD/HD | Slew rate select - internal pulldown; high = SD mode (slower edges), low = HD mode (faster edges); SMBus override possible. |
| 11, 12 | SDO0 / SDO0 | Complementary output pair 0 - true/complement 75Ω current-mode outputs; amplitude adjustable ±10% via SMBus register 04h. |
| 13 | FAULT | Open-drain fault flag - active-low aggregation of unmasked LOS or termination faults; supports wire-OR with multiple LMH0307 devices. |
| 14, 15 | SDO1 / SDO1 | Complementary output pair 1 - independent of SDO0; each pair has dedicated termination fault detection and amplitude control. |
| 16 | RSTO | Reset output - goes high after writing register 0 (ID); used to cascade reset signals across multiple LMH0307s on shared SMBus. |
| 9, DAP | VCC / VEE | +3.3V supply and ground - VEE connects to exposed thermal pad; improper grounding causes thermal derating and jitter degradation. |
Key Features
| Feature | Design Value |
|---|---|
| Cable Detect per Output | Real-time near-end termination sensing on both SDO0 and SDO1 - enables automatic cable-attach/removal response without host polling. |
| Loss-of-Signal Detection | Robust input pattern recognition - rejects noise and self-oscillation while detecting valid SDI video presence; configurable mute or offset behavior. |
| Output Amplitude Adjustment | ±10% tuning in 5 mV increments via SMBus registers 04h/06h - compensates for PCB trace loss and connector variations across production units. |
| Dual Independent Power Control | Per-channel output disable via SMBus MASK register (PD0/PD1) or global ENABLE pin - allows selective channel shutdown for power optimization. |
| Multi-Device SMBus Addressing | Dynamic 7-bit address reprogramming (register 00h) - supports up to 127 LMH0307SQX/NOPB devices on one bus using daisy-chained RSTI/RSTO. |
Applications
| Video Router Backplane Distribution | HD/SD-SDI Signal Splitting |
|---|---|
|
Use Scenario: Distributing a single HD-SDI source to 16 downstream processing modules in a 19-inch broadcast rack. IC Role / Device Role / Timing Role: Dual-output cable driver providing electrically isolated, impedance-matched copies of the input signal to two separate coaxial paths. Use Value: Eliminates need for passive splitters or repeaters; maintains SMPTE 424M eye integrity over 100m Belden 1694A cable with <20 ps additive jitter. |
Use Scenario: Feeding identical SDI feeds to camera monitor, recording unit, and waveform analyzer in live OB van setup. IC Role / Device Role / Timing Role: Active fanout buffer with independent cable detect per output - confirms physical connection before enabling downstream processing. Use Value: Prevents false triggers from unterminated outputs; FAULT pin alerts operator immediately if monitor cable is unplugged mid-broadcast. |
| Remote Camera Head Interface | Production Switcher Input Stage |
|
Use Scenario: Driving SDI signals from camera head over long coaxial runs to CCU, with real-time cable health monitoring. IC Role / Device Role / Timing Role: Cable driver with integrated termination fault detection - senses cable damage or connector corrosion before signal degradation occurs. Use Value: Reduces field maintenance time; SMBus registers log peak fault counts (TF0PCOUNT/TF1PCOUNT) for predictive diagnostics. |
Use Scenario: Conditioning incoming SDI feeds from multiple sources prior to routing matrix in broadcast switcher chassis. IC Role / Device Role / Timing Role: Input buffer with loss-of-signal detection and SMBus-configurable output amplitude - normalizes signal levels across diverse source equipment. Use Value: Ensures consistent switching performance; MUTE/offset selection prevents black screen or noise bursts during source transitions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SDI cable driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMH0384SQ/NOPB | Single-output, 3G-SDI driver with identical SMBus register map and pin-compatible footprint (16-pin WQFN), but lacks second output and dual-cable-detect logic. | Used where only one distribution path is required; cannot replace dual-output topology without redesigning signal routing. | Select LMH0384SQ/NOPB only when board space or cost constraints eliminate need for dual outputs - no change to firmware or SMBus initialization sequence. |
| GS2971-IBE3 | 3G-SDI reclocker with integrated CDR, not a cable driver; provides jitter cleanup but no cable detect, termination sensing, or output amplitude control. | Deployed upstream of LMH0307SQX/NOPB to clean degraded signals before driving long cables - functionally complementary, not substitutable. | Choose GS2971-IBE3 only when input signal jitter exceeds 1 UI; LMH0307SQX/NOPB alone suffices for clean source distribution. |
Compared with LMH0307SQX/NOPB, LMH0384SQ/NOPB reduces channel count but retains full diagnostic and configuration capability, while GS2971-IBE3 adds jitter cleaning at the cost of losing cable-aware intelligence - neither offers drop-in replacement without functional or layout trade-offs.
Availability
LMH0307SQX/NOPB is available at Aetrix Electronics and suitable for broadcast video routers, SDI distribution amplifiers, and live production switchers requiring stable component supply across extended product lifecycles and multi-year production ramps.
Supply support for LMH0307SQX/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 solutions, with broad expertise in high-speed video interface ICs and broadcast infrastructure components.
The LMH0307SQX/NOPB belongs to TI's LMH high-speed video interface product line, engineered specifically for SMPTE-compliant SDI signal conditioning, distribution, and diagnostics in professional broadcast and production environments.
FAQ
What is the primary function of the LMH0307SQX/NOPB in an SDI system?
The LMH0307SQX/NOPB functions as a dual-output 3G-SDI cable driver that conditions and distributes serial digital video signals across coaxial cables. It provides two independent 75Ω current-mode outputs with programmable slew rate, cable detect, loss-of-signal monitoring, and SMBus-based configuration - all critical for reliable signal integrity in broadcast routers and distribution amplifiers. The LMH0307SQX/NOPB does not perform retiming or equalization; it is a driver-only device optimized for short-to-medium distance distribution.
Does the LMH0307SQX/NOPB support SMPTE 424M (1080p60) data rates?
Yes, the LMH0307SQX/NOPB supports data rates up to 2.97 Gbps, fully compliant with SMPTE 424M for 1080p60 video transmission. Its AC electrical characteristics specify 20 psP-P additive jitter at 2.97 Gbps and output rise/fall times of 400–800 ps in HD mode, meeting SMPTE 424M eye mask requirements. The LMH0307SQX/NOPB achieves this while maintaining 15 dB return loss above 1.5 GHz, ensuring minimal signal reflection on properly designed PCB layouts.
How does cable detection work on the LMH0307SQX/NOPB, and what does it detect?
Cable detection on the LMH0307SQX/NOPB monitors output amplitude on each SDO0/SDO1 pair to infer near-end termination. When a properly terminated 75Ω coaxial cable is attached, output amplitude remains within expected range (≈800 mVP-P); an unterminated or open-circuit condition causes amplitude doubling, triggering a Termination Fault (TF0P/TF0N/TF1P/TF1N) flag. The LMH0307SQX/NOPB does not detect cable length or far-end faults - only local termination status at the driver output.
Can the LMH0307SQX/NOPB operate with a single-ended input, and what is required?
Yes, the LMH0307SQX/NOPB accepts single-ended SDI input by connecting the signal to either SDI or SDI pin (Pin 1 or 2), while terminating the unused pin to VEE (ground) with a 75Ω resistor. This preserves common-mode rejection and avoids input imbalance that would degrade jitter performance. The LMH0307SQX/NOPB's differential input stage remains functional in single-ended mode, but optimal performance - especially at 2.97 Gbps - requires matched trace lengths and controlled impedance routing to both pins.
What is the role of the RREF pin on the LMH0307SQX/NOPB, and what resistor value must be used?
The RREF pin on the LMH0307SQX/NOPB sets the output current bias and thus determines output voltage swing into 75Ω loads. It must be connected to VCC via a precision 750Ω ±1% resistor - no other value is specified or guaranteed to deliver the nominal 800 mVP-P output. Placement is critical: the resistor must be located adjacent to the RREF pin, and copper under the RREF network must be removed to minimize parasitic capacitance, which otherwise degrades high-frequency response and increases jitter in the LMH0307SQX/NOPB.
LMH0307SQX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-WQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Driver
- Applications:
- Professional Video
- Standards:
- DVB-ASI, SMPTE
- Control Interface:
- GPIO
- Voltage - Supply:
- 3.14V ~ 3.47V
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 16-WQFN (4x4)
LMH0307SQX/NOPB FAQ
1.How can I place an order for LMH0307SQX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMH0307SQX/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 LMH0307SQX/NOPB reliable?
The price and inventory of LMH0307SQX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMH0307SQX/NOPB is usually 5 days.
3.What payment methods are accepted for LMH0307SQX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMH0307SQX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMH0307SQX/NOPB?
LMH0307SQX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMH0307SQX/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 LMH0307SQX/NOPB?
For technical support, including LMH0307SQX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMH0307SQX/NOPB requirements.
6.How does Aetrix verify that LMH0307SQX/NOPB is sourced from the original manufacturer or authorized distributors?
All LMH0307SQX/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 LMH0307SQX/NOPB meets industry standards.
7.What is the process for return or replacement of LMH0307SQX/NOPB?
All LMH0307SQX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMH0307SQX/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 LMH0307SQX/NOPB part is unused and in its original packaging.
Return procedure for LMH0307SQX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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