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Texas Instruments LMH0002SQ/S250
- Part No.:
- LMH0002SQ/S250
- Manufacturer:
- Texas Instruments
- Category:
- Video Processing
- Package:
- 16-WQFN Exposed Pad
- Datasheet:
-
LMH0002SQ/S250.pdf
- Description:
- IC VIDEO SERIAL DRIVER 16WQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,881
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Product details
Overview
LMH0002SQ/S250 from Texas Instruments is a SMPTE 292M/259M-compliant serial digital cable driver IC with differential input, 75Ω differential output, selectable slew rate (SD/HD pin), adjustable output amplitude via RREF resistor, and single 3.3V supply operation. It drives coaxial cables at up to 1.485 Gbps in HD mode and supports DVB-ASI at 270 Mbps for broadcast video routing systems.
For engineers reviewing the LMH0002SQ/S250 datasheet, LMH0002SQ/S250 pinout, LMH0002SQ/S250 application, or LMH0002SQ/S250 equivalent, key selection criteria include SMPTE compliance mode control, RREF-set output swing (750–1100 mVP–P), industrial temperature range (−40°C to +85°C), WQFN-16 package thermal resistance (θJA = 78.9°C/W), and additive jitter performance (26 psP–P at 1.485 Gbps).
Technical Context
The LMH0002SQ/S250 implements a current-mode differential output stage with programmable slew rate via the SD/HD pin: low = SMPTE 292M-compliant fast edges (120–220 ps rise/fall), high = SMPTE 259M-compliant slower edges (400–800 ps). Its self-biased differential input accepts AC- or DC-coupled signals within 1.6 V to VCC − VSDI/2 common-mode range.
Output voltage swing is set by an external RREF resistor between RREF and VCC, enabling precise 750–850 mVP–P (RREF = 750 Ω) or 900–1100 mVP–P (RREF = 590 Ω) levels into 75 Ω loads. Power consumption is 49 mA typical in SD mode and 43 mA in HD mode at VCC = 3.3 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | Up to 1.485 Gbps - supports full SMPTE 292M HD-SDI and SMPTE 344M transmission |
| Output Swing | 750–850 mVP–P (RREF = 750 Ω) or 900–1100 mVP–P (RREF = 590 Ω) - enables precise level matching to downstream receivers |
| Additive Jitter | 26 psP–P at 1.485 Gbps - meets SMPTE 292M jitter budget for reliable HD-SDI link integrity |
| Supply Voltage | 3.3 V ±5% - compatible with standard LVCMOS logic rails and eliminates need for dual supplies |
| Operating Temp | −40°C to +85°C - qualified for industrial-grade broadcast infrastructure equipment |
| Power Dissipation | 149 mW typical in HD mode - enables compact thermal design in dense video router PCBs |
| Return Loss | 15–20 dB (5 MHz–1.5 GHz) - ensures minimal signal reflection on 75 Ω coaxial traces |
Pinout & Package
LMH0002SQ/S250 is housed in a 16-pin WQFN package (RUM0016A) with exposed thermal pad (DAP) connected to VEE. The package measures 4.0 mm × 4.0 mm × 0.8 mm and supports reflow soldering per JEDEC Level-1 moisture sensitivity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VEE) | Negative power supply | Ground reference for all internal circuitry; must be low-impedance connection to system ground plane |
| 2, 3 (SDI, SDI) | Differential data input | True/complement inputs accept self-biased differential or single-ended signals; no external termination required |
| 4 (RREF) | Output amplitude control | Resistor to VCC sets output swing; placement near pin minimizes parasitic capacitance |
| 5, 6, 7, 8, 13, 14, 15, 16 (NC) | No connect | Internally unconnected; must remain floating or grounded per layout best practice |
| 9 (VCC) | Positive power supply | +3.3 V supply with local 0.1 µF bypass capacitor required adjacent to pin |
| 10 (SD/HD) | Slew rate select | Low = SMPTE 292M fast edge (120–220 ps); high = SMPTE 259M slow edge (400–800 ps) |
| 11, 12 (SDO, SDO) | Differential data output | Current-mode outputs drive 75 Ω coax directly; require AC coupling and proper 75 Ω source termination |
Key Features
| Feature | Design Value |
|---|---|
| SMPTE 292M/259M dual-mode compliance | Selectable via SD/HD pin - eliminates need for separate SD and HD drivers in multi-standard video gear |
| Adjustable output amplitude | RREF-based tuning - enables optimization for cable length, connector loss, and receiver sensitivity without redesign |
| Self-biased differential input | No external bias network needed - reduces BOM count and simplifies interface to FPGA serializers or video decoders |
| Industrial temperature range | −40°C to +85°C operation - supports deployment in uncooled broadcast enclosures and outdoor security camera hubs |
| Low additive jitter | 26 psP–P at 1.485 Gbps - preserves eye opening for error-free transmission over long coax runs |
Applications
| Broadcast Video Routers | Digital Video Distribution Amplifiers |
|---|---|
Use Scenario: High-density SDI routing matrices switching 16+ HD-SDI sources to multiple destinations in live production trucks. IC Role / Device Role / Timing Role: Cable driver providing robust 1.485 Gbps differential output with SMPTE 292M-compliant slew rate and return loss. Use Value: Enables clean signal fan-out across backplane traces and coax outputs without repeaters or equalizers. | Use Scenario: 1-to-8 HD-SDI distribution amplifiers used in studio monitoring walls and OB van multiviewers. IC Role / Device Role / Timing Role: Output buffer driving multiple 75 Ω coaxial cables simultaneously with matched amplitude and timing. Use Value: Maintains signal integrity across all outputs with <26 ps jitter and >15 dB return loss up to 1.5 GHz. |
| Security Camera Video Hubs | Set-Top Box SDI Interfaces |
Use Scenario: Centralized video aggregation units receiving HD-SDI feeds from 32+ IP cameras over coaxial infrastructure. IC Role / Device Role / Timing Role: Input-receiving and re-driving interface supporting both SMPTE 259M (270 Mbps) and 292M (1.485 Gbps) modes. Use Value: Single device handles legacy SD and modern HD camera streams without hardware change. | Use Scenario: Consumer STB designs incorporating professional-grade SDI input for HDMI-to-SDI conversion or broadcast monitoring. IC Role / Device Role / Timing Role: Input serializer interface accepting DVB-ASI (270 Mbps) or HD-SDI signals with self-biased differential input. Use Value: Eliminates external bias resistors and simplifies PCB layout while meeting ESD immunity (5 kV HBM). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial digital cable driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMH0002TMA | 8-pin SOIC package, θJA = 160°C/W, commercial temp range (−40°C to +85°C same spec but different marking) | Higher thermal resistance limits power density in compact layouts; identical electrical specs | Select LMH0002TMA only when SOIC footprint compatibility is mandatory and thermal headroom exists. |
| GS1578A | Gennum legacy part; form-fit-function replacement per TI documentation; no RREF adjustment - fixed 800 mVP–P output | Lacks programmable amplitude and slew rate; requires board-level redesign for level/slew tuning | Choose GS1578A only for legacy repair or drop-in replacement where LMH0002SQ/S250's adjustability is unused. |
Compared with LMH0002TMA, LMH0002SQ/S250 offers 56% lower thermal resistance and identical industrial qualification, while versus GS1578A it adds RREF-based amplitude tuning and SD/HD slew control - critical for optimizing signal integrity across variable cable lengths and standards.
Availability
LMH0002SQ/S250 is available at Aetrix Electronics and suitable for broadcast video routers, digital video distribution amplifiers, security camera video hubs, and set-top box SDI interfaces requiring stable component supply, industrial temperature support, and SMPTE-compliant signal integrity.
Supply support for LMH0002SQ/S250 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, embedded processing, and high-speed interface solutions for industrial, automotive, and communications markets.
The LMH0002 product line delivers SMPTE-compliant serial digital video drivers optimized for broadcast infrastructure, professional video equipment, and high-reliability coaxial data transmission systems.
FAQ
What is the maximum data rate supported by the LMH0002SQ/S250?
The LMH0002SQ/S250 supports a maximum data rate of 1.485 Gbps, fully compliant with SMPTE 292M HD-SDI and SMPTE 344M standards. This capability is verified across the industrial temperature range (−40°C to +85°C) and confirmed in the AC Electrical Characteristics table of the official TI datasheet SNLS215E. The LMH0002SQ/S250 maintains specified jitter (26 psP–P) and rise/fall time (120–220 ps) at this rate.
How does the SD/HD pin affect LMH0002SQ/S250 operation?
The SD/HD pin on the LMH0002SQ/S250 selects output slew rate: logic low configures fast edges (120–220 ps) for SMPTE 292M HD-SDI compliance, while logic high enables slower edges (400–800 ps) for SMPTE 259M SD-SDI compliance. This pin directly controls internal current steering and is referenced in the Pin Descriptions table and Application Information section of the LMH0002SQ/S250 datasheet.
What is the purpose of the RREF pin on the LMH0002SQ/S250?
The RREF pin on the LMH0002SQ/S250 sets output voltage swing by connecting an external resistor to VCC. A 750 Ω resistor yields 750–850 mVP–P; a 590 Ω resistor yields 900–1100 mVP–P, both into 75 Ω loads. This adjustment is critical for compensating cable loss and matching receiver sensitivity, and is documented in the DC Electrical Characteristics table of the LMH0002SQ/S250 datasheet.
Does the LMH0002SQ/S250 require external input biasing?
No, the LMH0002SQ/S250 features self-biased differential inputs (SDI/SDI) that establish ~2.1 V common-mode voltage with VCC = 3.3 V, eliminating the need for external bias resistors. This is confirmed in the "Device Operation" section of the LMH0002SQ/S250 datasheet, which states inputs are "self-biased, allowing for simple AC or DC coupling."
What package type and thermal characteristics does the LMH0002SQ/S250 use?
The LMH0002SQ/S250 uses a 16-pin WQFN package (RUM0016A) with 4.0 mm × 4.0 mm body and exposed thermal pad (DAP) tied to VEE. Its thermal resistance is θJA = 78.9°C/W and θJC = 42.7°C/W, enabling higher power density than the SOIC variant. These values are specified in the Absolute Maximum Ratings table of the LMH0002SQ/S250 datasheet.
LMH0002SQ/S250 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-WQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Driver
- Applications:
- Consumer Video
- Standards:
- DVB-ASI, SMPTE
- Control Interface:
- Serial
- Voltage - Supply:
- 3.135V ~ 3.465V
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 16-WQFN (4x4)
LMH0002SQ/S250 FAQ
1.How can I place an order for LMH0002SQ/S250 through Aetrix?
Please submit a Request for Quotation (RFQ) for LMH0002SQ/S250 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 LMH0002SQ/S250 reliable?
The price and inventory of LMH0002SQ/S250 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMH0002SQ/S250 is usually 5 days.
3.What payment methods are accepted for LMH0002SQ/S250?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMH0002SQ/S250 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMH0002SQ/S250?
LMH0002SQ/S250 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMH0002SQ/S250 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 LMH0002SQ/S250?
For technical support, including LMH0002SQ/S250 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMH0002SQ/S250 requirements.
6.How does Aetrix verify that LMH0002SQ/S250 is sourced from the original manufacturer or authorized distributors?
All LMH0002SQ/S250 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 LMH0002SQ/S250 meets industry standards.
7.What is the process for return or replacement of LMH0002SQ/S250?
All LMH0002SQ/S250 units undergo pre-shipment inspection (PSI). If there is an issue with LMH0002SQ/S250, 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 LMH0002SQ/S250 part is unused and in its original packaging.
Return procedure for LMH0002SQ/S250:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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