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Texas Instruments LMH0002SQ
- Part No.:
- LMH0002SQ
- Manufacturer:
- Texas Instruments
- Category:
- Video Processing
- Package:
- 16-WQFN Exposed Pad
- Datasheet:
-
LMH0002SQ.pdf
- Description:
- IC VIDEO DRIVER 16WQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,415
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Product details
Overview
LMH0002SQ from Texas Instruments is a SMPTE 292M/259M serial digital cable driver IC with differential input, 75Ω differential output, and selectable slew rate for SD/HD mode compliance. It operates from a single 3.3V supply, supports data rates up to 1.485 Gbps, and delivers 800 mVP–P output swing into 75Ω with RREF = 750Ω - used in broadcast video routing and HD-SDI distribution amplifiers.
For engineers reviewing the LMH0002SQ datasheet, LMH0002SQ pinout, LMH0002SQ application, or LMH0002SQ equivalent, key selection criteria include industrial temperature range (−40°C to +85°C), WQFN-16 package compatibility, SMPTE 292M/259M compliance, adjustable output amplitude via RREF, and current-mode output architecture requiring careful PCB layout for return loss & jitter control.
Technical Context
The LMH0002SQ implements a current-mode differential output stage with programmable slew rate controlled by the SD/HD pin: low = SMPTE 292M-compliant fast edges (120–220 ps rise/fall), high = SMPTE 259M-compliant slower edges (400–800 ps). Input common-mode voltage is self-biased at ~2.1 V with VCC = 3.3 V, supporting both AC- and DC-coupled differential inputs.
Output amplitude is set by an external resistor (RREF) between RREF and VCC, enabling precise 750–1100 mVP–P swing tuning across 75Ω loads. Jitter performance is characterized at 26 psP–P additive jitter @ 1.485 Gbps, meeting SMPTE 292M timing integrity requirements for HD-SDI transmission.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | Up to 1.485 Gbps - enables full HD-SDI (SMPTE 292M) and dual-link SD-SDI operation. |
| Output Swing | 800 mVP–P (RREF = 750Ω) - matches 75Ω coaxial cable drive requirement for broadcast signal integrity. |
| Additive Jitter | 26 psP–P @ 1.485 Gbps - ensures bit-error-rate compliance in long-reach HD-SDI links. |
| 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 video infrastructure equipment including routers and cameras. |
| Power Consumption | 149 mW in HD mode - enables thermally constrained WQFN-16 layouts in dense video processing modules. |
| Return Loss | ≥15 dB (5 MHz–1.5 GHz) - maintains signal fidelity on properly designed evaluation board (SD002). |
Pinout & Package
The LMH0002SQ is housed in a 16-pin WQFN package (RUM0016A) with exposed thermal pad connected to VEE. Package dimensions are 4.0 mm × 4.0 mm × 0.8 mm, with 0.5 mm pitch and wettable flank leads for automated optical inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VEE) | Negative power supply | Ground reference for all internal circuitry; must be low-inductance connection to PCB ground plane. |
| 2, 3 (SDI, SDI) | Differential data input | Self-biased true/complement inputs accepting AC- or DC-coupled signals within 1.6 V to VCC–VSDI/2 common-mode range. |
| 4 (RREF) | Output amplitude control | Resistor-to-VCC sets output swing; placement must minimize parasitic capacitance for stable amplitude calibration. |
| 5–8, 13–16 (NC) | No connect | Unused pins; must remain unconnected per TI design guidance to avoid coupling or EMI issues. |
| 9 (VCC) | Positive power supply | +3.3 V supply with local 0.1 µF bypass capacitor required within 2 mm of pin for high-frequency stability. |
| 10 (SD/HD) | Slew rate select | Logic-low configures SMPTE 292M-fast mode (120–220 ps); logic-high selects SMPTE 259M-slow mode (400–800 ps). |
| 11, 12 (SDO, SDO) | Differential data output | Current-mode outputs driving 75Ω coax; require matched 50Ω microstrip traces and AC-coupling capacitors per SMPTE layout rules. |
| DAP | Thermal pad | Exposed die attach pad tied to VEE; requires ≥4 thermal vias to inner ground plane for θJA = 78.9°C/W thermal performance. |
Key Features
| Feature | Design Value |
|---|---|
| Selectable slew rate | Two discrete edge rates via SD/HD pin enable one hardware design to support both SD-SDI (270 Mbps) and HD-SDI (1.485 Gbps) standards. |
| Adjustable output amplitude | RREF-based tuning allows precise 750–1100 mVP–P swing calibration to match cable loss and receiver sensitivity across production units. |
| Differential input stage | Self-biased architecture eliminates external termination resistors and simplifies interface to FPGA serializers or reclockers with differential LVDS outputs. |
| Single 3.3V supply | Removes need for negative rail or LDOs, reducing BOM count and PCB area in space-constrained video encoder modules. |
| Industrial temperature grade | −40°C to +85°C qualification ensures reliability in outdoor broadcast enclosures and automotive ADAS camera links. |
Applications
| Broadcast Video Router | HD-SDI Distribution Amplifier |
|---|---|
Use Scenario: Centralized routing of multiple HD-SDI sources to monitors, recorders, and processors in OB vans and control rooms. IC Role / Device Role / Timing Role: Cable driver providing robust 1.485 Gbps signal regeneration and impedance-matched 75Ω output to drive long coax runs. Use Value: Maintains <26 psP–P additive jitter and >15 dB return loss across 100 m Belden 1694A cable, preventing eye closure in multi-hop routing trees. | Use Scenario: Fan-out of a single HD-SDI source to 8+ downstream displays or capture cards in studio environments. IC Role / Device Role / Timing Role: Low-jitter, high-drive-strength repeater with independent slew control per output channel. Use Value: Enables identical signal integrity across all outputs via matched RREF networks and WQFN thermal uniformity, eliminating skew-induced lip-sync errors. |
| Security Camera Transmitter | Set-Top Box Output Interface |
Use Scenario: HD video transmission from outdoor IP cameras over coaxial infrastructure using HD-over-Coax (HDcctv) protocol. IC Role / Device Role / Timing Role: SMPTE 292M-compliant transmitter interfacing CMOS image sensor pipeline to coax driver stage. Use Value: −40°C to +85°C rating ensures operation in unheated camera housings; 149 mW power enables passive cooling in sealed enclosures. | Use Scenario: HD-SDI output stage in consumer STBs delivering uncompressed 1080p60 video to professional monitors. IC Role / Device Role / Timing Role: Final-stage cable driver converting internal LVDS or parallel video to broadcast-standard HD-SDI. Use Value: RREF-tuned 800 mVP–P swing meets SMPTE 292M amplitude tolerance (±10%), ensuring plug-and-play compatibility with certified monitors. |
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 |
|---|---|---|---|
| GS1578A | Form-fit-function replacement per TI documentation; same 16-pin WQFN package, identical pinout, and SMPTE 292M/259M compliance. | Legacy Gennum part with discontinued status; lacks TI's updated 26 psP–P jitter spec and industrial temp validation. | Select LMH0002SQ for new designs requiring guaranteed long-term supply, RoHS/Green compliance, and documented −40°C to +85°C performance. |
| LMH0034SQ | TI's pin-compatible successor with lower 18 psP–P jitter @ 1.485 Gbps, 100 mW power, and extended 3 Gbps capability (SMPTE 424M). | Supports 3G-SDI and hybrid fiber/coax infrastructures; requires updated RREF calibration due to different output stage gain. | Choose LMH0002SQ when cost-sensitive HD-SDI systems require proven stability and no firmware/hardware revision - LMH0034SQ suits future-proof 3G-SDI upgrades. |
Compared with GS1578A, LMH0002SQ offers verified industrial temperature operation and tighter jitter specs; versus LMH0034SQ, it provides lower-cost HD-SDI compliance without over-spec'ing for 3G-SDI, preserving BOM efficiency in legacy broadcast gear.
Availability
LMH0002SQ is available at Aetrix Electronics and suitable for broadcast video routers, HD-SDI distribution amplifiers, and security camera transmitters requiring stable component supply across industrial temperature ranges and long product lifecycles.
Supply support for LMH0002SQ 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 headquartered in Dallas, Texas, specializing in analog, embedded processing, and connectivity technologies with broad industrial and automotive focus.
The LMH0002SQ belongs to TI's high-speed interface product line, engineered specifically for SMPTE-compliant serial digital video transmission in broadcast, surveillance, and professional AV equipment.
FAQ
What is the operating temperature range specified for the LMH0002SQ?
The LMH0002SQ is rated for industrial operation from −40°C to +85°C, as confirmed in the Recommended Operating Conditions table of the SNLS215E datasheet. This range applies specifically to the LMH0002SQ and LMH0002TMA variants, distinguishing them from the commercial-grade LMH0002MA (0°C to +70°C). The extended range ensures reliability in outdoor broadcast enclosures and automotive camera modules where ambient temperatures exceed commercial limits.
How does the SD/HD pin control output slew rate on the LMH0002SQ?
The SD/HD pin on the LMH0002SQ selects between two discrete slew rates: logic-low configures SMPTE 292M-compliant fast edges (120–220 ps rise/fall time), while logic-high enables SMPTE 259M-compliant slower edges (400–800 ps). This function is explicitly defined in Table 1 (PIN DESCRIPTIONS) and verified in the AC Electrical Characteristics section. No external components are needed - the selection is purely digital and affects only output transition speed, not amplitude or jitter baseline.
What package type and footprint does the LMH0002SQ use?
The LMH0002SQ uses a 16-pin WQFN package (TI package drawing RUM0016A), measuring 4.0 mm × 4.0 mm × 0.8 mm with 0.5 mm pitch and an exposed thermal pad (DAP) connected to VEE. This is distinct from the 8-pin SOIC option used by LMH0002MA/TMA. The RUM0016A footprint is documented in TI's mechanical drawing SQB16A (Rev A) and requires ≥4 thermal vias under the DAP for optimal thermal performance (θJA = 78.9°C/W).
Can the LMH0002SQ replace the Gennum GS1578A directly?
Yes - the LMH0002SQ is explicitly stated as form-fit-function compatible with the Gennum GS1578A per the "REPLACING THE GENNUM GS1528, GS1528A, AND GS1578A" section of the datasheet. Both use identical 16-pin WQFN packages, matching pinouts (including NC pin locations), and SMPTE 292M/259M compliance. No PCB redesign or schematic change is required, though LMH0002SQ offers improved jitter (26 psP–P vs. unspecified for GS1578A) and guaranteed industrial temperature operation.
How is output amplitude adjusted on the LMH0002SQ?
Output amplitude on the LMH0002SQ is adjusted by connecting a precision resistor (RREF) between the RREF pin and VCC. A 750Ω resistor yields 800 mVP–P swing into 75Ω; a 590Ω resistor increases swing to 1000 mVP–P. The RREF network must be placed adjacent to the pin with minimized parasitic capacitance - TI specifies removal of copper under the RREF trace in the APPLICATION INFORMATION section. This adjustment is active across both SD and HD modes and directly scales output current drive.
LMH0002SQ 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 FAQ
1.How can I place an order for LMH0002SQ through Aetrix?
Please submit a Request for Quotation (RFQ) for LMH0002SQ 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 reliable?
The price and inventory of LMH0002SQ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMH0002SQ is usually 5 days.
3.What payment methods are accepted for LMH0002SQ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMH0002SQ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMH0002SQ?
LMH0002SQ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMH0002SQ 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?
For technical support, including LMH0002SQ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMH0002SQ requirements.
6.How does Aetrix verify that LMH0002SQ is sourced from the original manufacturer or authorized distributors?
All LMH0002SQ 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 meets industry standards.
7.What is the process for return or replacement of LMH0002SQ?
All LMH0002SQ units undergo pre-shipment inspection (PSI). If there is an issue with LMH0002SQ, 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 part is unused and in its original packaging.
Return procedure for LMH0002SQ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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