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Texas Instruments LMH0302SQE/NOPB
- Part No.:
- LMH0302SQE/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Video Processing
- Package:
- 16-WQFN Exposed Pad
- Datasheet:
-
LMH0302SQE/NOPB.pdf
- Description:
- IC VIDEO DRIVER 16WQFN
- Quantity:
- Payment:
- Shipping:
Inventory:676
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Product details
Overview
LMH0302SQE/NOPB from Texas Instruments is a 3-Gbps HD/SD SDI cable driver IC designed for serial digital video transmission in broadcast infrastructure. It supports ST 424 (3G), ST 292 (HD), and ST 259 (SD) standards, delivers 800 mVP–P output swing into 75-Ω coaxial loads, features selectable slew rate via SD/HD pin, and operates from a single 3.3-V supply with 165 mW typical power consumption in HD mode - used in digital video routers and distribution amplifiers.
For engineers reviewing the LMH0302SQE/NOPB datasheet, LMH0302SQE/NOPB pinout, LMH0302SQE/NOPB application, or LMH0302SQE/NOPB equivalent, key selection criteria include SMPTE-compliant rise/fall time control (90–800 ps), differential input (100-Ω) and single-ended output (75-Ω) impedance matching, output driver enable functionality, RREF-based voltage swing adjustment, and WQFN-16 thermal performance (RθJA = 47.8°C/W).
Technical Context
The LMH0302SQE/NOPB implements a current-mode output architecture with programmable slew rate via the SD/HD pin: low state enables fast 90–130 ps rise/fall times for ST 424/292 compliance, high state selects slower 400–800 ps timing for ST 259. Its differential input accepts 100–2200 mVP–P signals with self-biased termination, while the RREF pin sets output amplitude by connecting a 750-Ω resistor to VCC.
Output driver enable is controlled by the ENABLE pin (internal pullup), powering down SDO/SDO when low to reduce system power. The device operates across −40°C to +85°C, draws 38–59 mA supply current depending on mode, and meets SMPTE return loss requirements (≥15 dB up to 1.5 GHz) when implemented with proper 75-Ω trace routing and AC-coupling (4.7 µF).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | Up to 2.97 Gbps - supports full SMPTE ST 424 (3G-SDI) operation without retiming. |
| Input Impedance | 100-Ω differential - matches standard SDI receiver outputs and minimizes reflections on PCB traces. |
| Output Impedance | 75-Ω single-ended - directly drives coaxial cable (e.g., Belden 1694A) per SMPTE physical layer specs. |
| Output Swing | 720–880 mVP–P (typ. 800 mVP–P) - adjustable via RREF resistor; meets SMPTE amplitude tolerance for SD/HD/3G. |
| Rise/Fall Time | 90–130 ps (SD/HD = 0) or 400–800 ps (SD/HD = 1) - hardware-selectable for ST 292/424 or ST 259 compliance. |
| Supply Voltage | 3.13–3.46 V (nom. 3.3 V) - single-rail operation simplifies power delivery in dense video routing systems. |
| Additive Jitter | 20 psP–P at 2.97 Gbps - preserves eye opening for reliable clock recovery in downstream receivers. |
Pinout & Package
LMH0302SQE/NOPB uses a 4.00 mm × 4.00 mm WQFN-16 package with exposed thermal pad (EP) requiring connection to ground plane via via array. Pin 1 is marked by index area; package height ≤ 0.8 mm. Thermal pad soldering is mandatory for electrical stability and thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SDI / SDI | Differential data input | True/complement inputs accept AC- or DC-coupled SMPTE-compliant serial video; self-biased for 100-Ω termination. |
| SDO / SDO | Differential data output | True/complement current-mode outputs drive 75-Ω coax; require external 4.7 µF AC-coupling capacitors. |
| ENABLE | Output driver control | Active-low enable with internal pullup; asserts power-down to reduce idle power and isolate downstream stages. |
| SD/HD | Slew rate selection | Logic level selects rise/fall time: low = ST 424/292 (fast), high = ST 259 (slow); determines compliance mode. |
| RREF | Output amplitude reference | Connects to VCC via 750-Ω 1% resistor to set nominal 800 mVP–P output swing into 75-Ω load. |
| VCC | Positive supply | 3.3-V rail; requires local 0.1-µF bypass capacitor placed adjacent to pin for high-frequency noise suppression. |
| VEE | Ground reference | System ground (0 V); must be low-impedance and tied to EP thermal pad via multiple vias. |
Key Features
| Feature | Design Value |
|---|---|
| ST 424/292/259 compliance | Hardware-configurable via SD/HD pin - eliminates need for firmware or external logic to switch video formats. |
| Output driver power-down | ENABLE pin reduces supply current from 59 mA to 22 mA (HD mode), enabling dynamic power management in multi-channel systems. |
| Adjustable output amplitude | RREF pin allows fine-tuning of SDO swing (720–880 mVP–P) to compensate for PCB trace loss or connector mismatch. |
| Low additive jitter | 20 psP–P at 2.97 Gbps ensures robust signal integrity and maintains >30% eye opening at receiver input per SMPTE RP184. |
| Thermal performance | RθJA = 47.8°C/W and RθJB = 25.6°C/W enable stable operation at 85°C ambient in compact video equipment enclosures. |
Applications
| Broadcast Video Router | HD/3G-SDI Distribution Amplifier |
|---|---|
Use Scenario: High-density 32×32 SDI router switching ST 424, ST 292, and ST 259 signals between cameras, recorders, and monitors. IC Role / Device Role / Timing Role: Cable driver stage reconditioning serial video before coaxial fanout; provides amplitude restoration and jitter filtering. Use Value: Maintains SMPTE-compliant eye diagram after PCB trace routing and connector insertion loss, enabling error-free switching across mixed-format sources. |
Use Scenario: 1-to-8 HD/3G-SDI distribution amplifier feeding multiple monitors and recording devices from a single camera feed. IC Role / Device Role / Timing Role: Output buffer isolating source from multiple 75-Ω coaxial loads; prevents signal degradation due to impedance mismatch. Use Value: Delivers consistent 800 mVP–P swing and <20 ps jitter to all eight outputs, preserving signal fidelity required for real-time monitoring and archival. |
| Studio Camera Interface Module | Mobile Production Encoder Input Stage |
Use Scenario: Compact camera-back interface board converting internal LVDS video to SMPTE-compliant 3G-SDI for external transmission. IC Role / Device Role / Timing Role: Final-stage driver converting differential baseband to single-ended coaxial output; handles format auto-detection via SD/HD pin. Use Value: Supports seamless transition between SD, HD, and 3G modes without hardware change - critical for field-deployable broadcast gear. |
Use Scenario: Portable encoder unit accepting SDI feeds from field cameras and compressing to H.264/H.265 for IP streaming. IC Role / Device Role / Timing Role: Input conditioning block ensuring clean, jitter-minimized signal enters the encoder's reclocking PLL. Use Value: 20 psP–P additive jitter and 15 dB return loss >1.5 GHz prevent bit errors during long-haul coax runs into mobile encoders. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SDI cable driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMH0031RTVT | Single 2.97-Gbps SDI driver in 16-pin QFN; identical 75-Ω output, but lacks RREF-adjustable swing and uses fixed 800 mVP–P. | Requires no external RREF resistor; simpler layout but less flexibility for trace loss compensation. | Select when fixed amplitude suffices and board space is constrained - same footprint but no RREF network needed. |
| THS8200IPHP | Triple-channel 3G-SDI driver with integrated reclocker; higher power (240 mW/channel), larger HTSSOP-48 package. | Provides jitter cleaning and re-timing; suited for long-distance or noisy environments where LMH0302SQE/NOPB's direct-drive approach is insufficient. | Choose when signal regeneration is required upstream of long coax runs or legacy receivers with poor jitter tolerance. |
Compared with LMH0302SQE/NOPB, LMH0031RTVT offers simplified implementation at the cost of amplitude tuning, while THS8200IPHP adds reclocking capability in a larger, higher-power package - making LMH0302SQE/NOPB optimal for cost-sensitive, space-constrained, direct-drive broadcast interfaces.
Availability
LMH0302SQE/NOPB is available at Aetrix Electronics and suitable for broadcast video routers, HD/3G-SDI distribution amplifiers, and studio camera interface modules requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for LMH0302SQE/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 company specializing in analog and embedded processing technologies, with leadership in high-speed interface solutions for professional video and communications markets.
The LMH0302SQE/NOPB belongs to TI's broadcast-grade SDI driver product line, engineered specifically for SMPTE-compliant serial digital video transport in studio, mobile, and post-production equipment.
FAQ
What video standards does the LMH0302SQE/NOPB support?
The LMH0302SQE/NOPB supports SMPTE ST 424 (3G-SDI), ST 292 (HD-SDI), and ST 259 (SD-SDI) standards, plus DVB-ASI at 270 Mbps. It achieves compliance through hardware-selectable slew rate (via SD/HD pin) and meets all relevant amplitude, jitter, and return loss specifications across these rates. LMH0302SQE/NOPB does not support ST 425 (6G-SDI) or ST 2081 (12G-SDI).
How is output voltage swing adjusted on the LMH0302SQE/NOPB?
Output voltage swing on the LMH0302SQE/NOPB is set by connecting a precision 750-Ω 1% resistor between the RREF pin and VCC. This resistor establishes the current-source reference for the output drivers, yielding a nominal 800 mVP–P swing into 75-Ω loads. LMH0302SQE/NOPB datasheet Figure 5 confirms swing varies from 720–880 mVP–P over the recommended RREF range.
What is the function of the ENABLE pin on the LMH0302SQE/NOPB?
The ENABLE pin on the LMH0302SQE/NOPB is an active-low control that powers down the SDO/SDO output drivers when pulled low, reducing supply current from 59 mA to 22 mA (HD mode). It features an internal pullup, so the driver operates normally when left unconnected. LMH0302SQE/NOPB uses this for dynamic power gating in multi-channel systems or fault isolation.
Does the LMH0302SQE/NOPB require AC-coupling capacitors on its outputs?
Yes, the LMH0302SQE/NOPB requires 4.7-µF AC-coupling capacitors on both SDO and SDO outputs to comply with SMPTE low-frequency wander requirements. These capacitors must be high-quality ceramic (e.g., X7R), placed close to the pins, with anti-pads beneath to minimize parasitic capacitance. LMH0302SQE/NOPB application note Section 8.2.1 explicitly mandates this for ST 259/292/424 compliance.
What package type and thermal requirements apply to the LMH0302SQE/NOPB?
The LMH0302SQE/NOPB uses a 4.00 mm × 4.00 mm WQFN-16 package (RUM) with an exposed thermal pad (EP) that must be soldered to a solid ground plane using an array of vias. Thermal resistance is RθJA = 47.8°C/W and RθJB = 25.6°C/W. LMH0302SQE/NOPB requires this thermal pad connection for both electrical stability and junction temperature control up to +85°C ambient.
LMH0302SQE/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:
- Serial
- Voltage - Supply:
- 3.13V ~ 3.46V
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 16-WQFN (4x4)
LMH0302SQE/NOPB FAQ
1.How can I place an order for LMH0302SQE/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMH0302SQE/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 LMH0302SQE/NOPB reliable?
The price and inventory of LMH0302SQE/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMH0302SQE/NOPB is usually 5 days.
3.What payment methods are accepted for LMH0302SQE/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMH0302SQE/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMH0302SQE/NOPB?
LMH0302SQE/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMH0302SQE/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 LMH0302SQE/NOPB?
For technical support, including LMH0302SQE/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMH0302SQE/NOPB requirements.
6.How does Aetrix verify that LMH0302SQE/NOPB is sourced from the original manufacturer or authorized distributors?
All LMH0302SQE/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 LMH0302SQE/NOPB meets industry standards.
7.What is the process for return or replacement of LMH0302SQE/NOPB?
All LMH0302SQE/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMH0302SQE/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 LMH0302SQE/NOPB part is unused and in its original packaging.
Return procedure for LMH0302SQE/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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