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Texas Instruments LMH0002MA
- Part No.:
- LMH0002MA
- Manufacturer:
- Texas Instruments
- Category:
- Video Processing
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMH0002MA.pdf
- Description:
- IC VIDEO SERIAL DRIVER 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,791
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Product details
Overview
LMH0002MA from Texas Instruments is a SMPTE 292M/259M-compliant serial digital cable driver IC with differential input, 75Ω differential output, and selectable slew rate via SD/HD pin - supporting data rates up to 1.485 Gbps, 800 mVP–P output swing into 75Ω (RREF = 750Ω), and single 3.3V supply operation for broadcast video routing applications.
For engineers reviewing the LMH0002MA datasheet, LMH0002MA pinout, LMH0002MA application, or LMH0002MA equivalent, this device serves as a drop-in replacement for Gennum GS1528/GS1528A in SD/HD video infrastructure, requiring precise impedance control, jitter-sensitive timing paths, and industrial-grade thermal management in coaxial cable driver designs.
Technical Context
The LMH0002MA implements a current-mode differential output stage with externally adjustable amplitude via RREF, enabling precise 75Ω AC-coupled coaxial drive. Its dual-slew-rate architecture - controlled by the SD/HD pin - delivers 120–220 ps rise/fall time (SD mode) or 400–800 ps (HD mode) to meet SMPTE 259M and SMPTE 292M eye diagram requirements respectively.
It features self-biased differential inputs (VCMIN = 1.6 V, VSDI = 100–2000 mVP–P) and operates across 0°C to +70°C with 125 mW typical power consumption in SD mode. Output return loss exceeds 15 dB from 5 MHz to 1.5 GHz on validated board layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | Up to 1.485 Gbps - supports full SMPTE 292M HD-SDI and SMPTE 259M SD-SDI transmission without retiming. |
| Output Swing | 800 mVP–P (single-ended, 75Ω, RREF = 750Ω) - ensures compliant signal amplitude for Belden 8281/1694A coaxial cable drive. |
| Additive Jitter | 26 psP–P at 1.485 Gbps - maintains eye opening integrity in multi-hop video distribution systems. |
| Rise/Fall Time | 120–220 ps (SD mode), 400–800 ps (HD mode) - selectable via SD/HD pin to match SMPTE 259M or 292M rise-time masks. |
| Supply Voltage | 3.3 V ±5% - compatible with standard LVCMOS logic rails and eliminates need for dedicated analog supplies. |
| Operating Temp | 0°C to +70°C - commercial-grade rating suitable for studio equipment, encoders, and non-extended-temperature routers. |
| Power Consumption | 125 mW (SD mode), 149 mW (HD mode) - enables thermal design in dense video I/O card layouts without forced air. |
Pinout & Package
LMH0002MA is housed in an 8-pin SOIC package (TI package drawing D, 1.75 mm max height) with exposed leadframe not connected internally. Pin 3 (VEE) is ground reference; pins 1 and 2 are true/complement differential inputs; pin 4 sets output amplitude via external RREF; pin 5 is VCC; pin 6 controls slew rate; pins 7 and 8 are true/complement differential outputs.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | SDI | Differential serial data true input - accepts AC- or DC-coupled signals within 1.6 V common-mode range. |
| 2 | SDI | Differential serial data complement input - paired with Pin 1 for noise-rejecting signal reception. |
| 3 | VEE | Negative supply / ground reference - must be low-impedance connection to system ground plane. |
| 4 | RREF | Output amplitude control - resistor to VCC sets 75Ω output swing (750Ω → 800 mVP–P). |
| 5 | VCC | Positive supply - 3.3 V ±5%, bypassed with 0.1 µF ceramic capacitor near pin. |
| 6 | SD/HD | Slew rate select - low = SMPTE 292M fast edge, high = SMPTE 259M slower edge. |
| 7 | SDO | Differential serial data complement output - 75Ω current-mode driver, requires AC coupling. |
| 8 | SDO | Differential serial data true output - matched to Pin 7 for balanced coaxial transmission. |
Key Features
| Feature | Design Value |
|---|---|
| SMPTE 292M/259M compliance | Guaranteed via dual-slew-rate control and 1.485 Gbps data rate - eliminates need for external equalization in standard video links. |
| Adjustable output amplitude | Set via single external resistor (RREF) - enables fine-tuning for cable length, connector loss, or receiver sensitivity without redesign. |
| Differential input stage | Self-biased at ~2.1 V with 3.3 V supply - simplifies interface to FPGA transceivers, ASIC serializers, or reclockers without level-shifting. |
| 75Ω differential output | Current-mode driver matched to coaxial infrastructure - avoids termination mismatches and reflections in broadcast routing hardware. |
| Single 3.3 V supply | Eliminates dual-rail design complexity - reduces BOM count and PCB area versus legacy ±5 V drivers. |
Applications
| Broadcast Video Routing | HD-SDI Distribution Amplifier |
|---|---|
|
Use Scenario: Signal fan-out from a master HD-SDI source to multiple monitors or recorders in live production trucks. IC Role / Device Role / Timing Role: Cable driver providing gain, impedance matching, and jitter-controlled edge shaping before splitting. Use Value: Maintains SMPTE 292M eye compliance over 100 m Belden 1694A coax, enabling reliable multi-drop distribution without repeaters. |
Use Scenario: Re-transmission of HD-SDI signals across long backplane traces or between chassis in modular video processing systems. IC Role / Device Role / Timing Role: Reclocking-free buffer that restores signal integrity after trace-induced attenuation and skew. Use Value: 26 psP–P additive jitter preserves timing margin for downstream CDRs in multi-stage routing architectures. |
| Studio Camera Interface | SDI-to-DVB-ASI Bridge |
|
Use Scenario: Driving HD-SDI signals from camera head electronics to base station over ruggedized coaxial cabling. IC Role / Device Role / Timing Role: Final-stage line driver ensuring robust EMI immunity and return loss >15 dB up to 1.5 GHz. Use Value: Withstands mechanical vibration and temperature cycling while maintaining SMPTE 292M mask compliance per IEC 60933. |
Use Scenario: Converting SMPTE 259M SD-SDI signals to DVB-ASI format (270 Mbps) for MPEG transport stream injection. IC Role / Device Role / Timing Role: Physical layer driver enabling protocol-agnostic bitstream forwarding between broadcast domains. Use Value: Supports DVB-ASI at 270 Mbps with <18 psP–P jitter - meets EN 300 429 timing stability requirements for conditional access modules. |
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 |
|---|---|---|---|
| GS1528A | Pin-compatible, identical 8-pin SOIC footprint and pinout; same 3.3 V supply and SD/HD slew control; slightly higher ICC (52 mA vs 49 mA typ). | Legacy Gennum part with discontinued status; lacks TI's extended lifecycle support and RoHS+Br/Cl compliance. | Select LMH0002MA for new designs requiring active supply chain, TI's 15-year longevity commitment, and low-halogen packaging. |
| LMH0002SQ | Same electrical specs but in 16-pin WQFN (RUM0016A); lower θJA (78.9°C/W vs 160°C/W); requires different PCB layout and thermal pad grounding. | Preferred for space-constrained, high-density HD-SDI modules where thermal performance outweighs SOIC rework compatibility. | Choose LMH0002SQ only when board redesign is feasible and junction temperature must stay below 110°C under continuous 1.485 Gbps load. |
Compared with GS1528A, LMH0002MA offers identical form-fit-function with enhanced manufacturability and environmental compliance; compared with LMH0002SQ, it trades thermal efficiency for SOIC assembly familiarity and legacy board reuse capability.
Availability
LMH0002MA is available at Aetrix Electronics and suitable for broadcast video routing, HD-SDI distribution amplifiers, studio camera interfaces, and SDI-to-DVB-ASI bridges requiring stable component supply across multi-year production cycles.
Supply support for LMH0002MA 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 technologies, with decades of leadership in broadcast video interface solutions.
The LMH0002MA belongs to TI's high-speed interface product line, engineered specifically for SMPTE-compliant serial digital video transmission - targeting reliability, signal fidelity, and drop-in replaceability in professional AV infrastructure.
FAQ
What is the maximum data rate supported by the LMH0002MA?
The LMH0002MA supports data rates up to 1.485 Gbps, fully compliant with SMPTE 292M HD-SDI standards. This specification is verified across the full operating temperature range (0°C to +70°C) and confirmed in the AC Electrical Characteristics table of the SNLS215E datasheet. The LMH0002MA maintains signal integrity at this rate with ≤26 psP–P additive jitter and guaranteed rise/fall times in both SD and HD modes.
Does the LMH0002MA require external termination resistors on its outputs?
No, the LMH0002MA does not require external termination resistors on its SDO/SDO outputs because it integrates a 75Ω current-mode output driver designed for direct connection to 75Ω coaxial cable. However, AC coupling capacitors (typically 100 nF) are mandatory on both outputs to block DC offset, and proper PCB layout - including controlled 75Ω differential microstrip - is required to maintain return loss >15 dB as specified in the LMH0002MA datasheet.
How is output amplitude adjusted on the LMH0002MA?
Output amplitude on the LMH0002MA is adjusted using an external resistor (RREF) connected between Pin 4 (RREF) and Pin 5 (VCC). A 750Ω ±1% resistor yields 800 mVP–P into 75Ω, while a 590Ω ±1% resistor increases swing to 1000 mVP–P. The resistor must be placed adjacent to the RREF pin with minimal trace length, and underlying copper should be removed to reduce parasitic capacitance - as detailed in the LMH0002MA application information section.
Is the LMH0002MA pin-compatible with the Gennum GS1528 series?
Yes, the LMH0002MA is form-fit-function compatible with the Gennum GS1528 and GS1528A, sharing identical 8-pin SOIC packaging, pin numbering, and pin functions - including SDI/SDI inputs, SDO/SDO outputs, SD/HD slew control, RREF amplitude setting, and VCC/VEE supply pins. This compatibility is explicitly stated in the LMH0002MA datasheet's "Replacing the Gennum GS1528" section and validated in TI's application notes.
What is the recommended power supply decoupling for the LMH0002MA?
The LMH0002MA requires a 0.1 µF ceramic capacitor placed as close as possible to Pin 5 (VCC) and Pin 3 (VEE), with short, low-inductance traces. For systems with multiple LMH0002MA devices or high-noise environments, adding a 4.7 µF tantalum or X7R ceramic bulk capacitor within 1 inch of the SOIC footprint further stabilizes the 3.3 V rail. These values and placement guidelines are specified in the LMH0002MA evaluation board layout recommendations and thermal design notes.
LMH0002MA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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:
- 8-SOIC
LMH0002MA FAQ
1.How can I place an order for LMH0002MA through Aetrix?
Please submit a Request for Quotation (RFQ) for LMH0002MA 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 LMH0002MA reliable?
The price and inventory of LMH0002MA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMH0002MA is usually 5 days.
3.What payment methods are accepted for LMH0002MA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMH0002MA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMH0002MA?
LMH0002MA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMH0002MA 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 LMH0002MA?
For technical support, including LMH0002MA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMH0002MA requirements.
6.How does Aetrix verify that LMH0002MA is sourced from the original manufacturer or authorized distributors?
All LMH0002MA 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 LMH0002MA meets industry standards.
7.What is the process for return or replacement of LMH0002MA?
All LMH0002MA units undergo pre-shipment inspection (PSI). If there is an issue with LMH0002MA, 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 LMH0002MA part is unused and in its original packaging.
Return procedure for LMH0002MA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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