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Texas Instruments LMH0024MA/NOPB
- Part No.:
- LMH0024MA/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Specialized
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMH0024MA/NOPB.pdf
- Description:
- IC INTERFACE SPECIALIZED 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:129
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Product details
Overview
LMH0024MA/NOPB from Texas Instruments (formerly National Semiconductor) is a 3.3V adaptive cable equalizer IC for SMPTE 259M and SMPTE 344M serial digital video interfaces, supporting data rates from 125 Mbps to 540 Mbps, featuring DC restoration, manual bypass, output mute, and cable length indicator (CLI), deployed in broadcast camera backends and SDI distribution amplifiers.
For engineers reviewing the LMH0024MA/NOPB datasheet, LMH0024MA/NOPB pinout, LMH0024MA/NOPB application, or LMH0024MA/NOPB equivalent, this page delivers verified electrical specs, SOIC-16 pin mapping, real-world equalization performance on Belden 1694A cable, CLI voltage correlation with cable length, and footprint-compatible alternatives for SDI signal integrity design.
Technical Context
The LMH0024MA/NOPB implements a multi-stage adaptive filter controlled by an Automatic Equalization Control (AEC) loop, where external 1 µF capacitor across AEC+ and AEC− sets loop response; it performs full DC restoration on differential inputs unless bypassed via BYPASS pin, and generates CLI voltage inversely proportional to cable length under active input signal.
Its output driver delivers 750 mVP–P differential swing into 50 Ω loads, with rise/fall times of 100–220 ps and ≤5% overshoot; input return loss meets 15–20 dB from 5 MHz to 1.5 GHz on reference board layout, and supply current decreases from 77 mA (short cable) to ~60 mA (350 m Belden 1694A at 270 Mbps).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate Range | 125 Mbps to 540 Mbps - supports SMPTE 259M (270 Mbps) and SMPTE 344M (540 Mbps) standards without reconfiguration. |
| Equalization Capacity | Up to 350 m Belden 1694A at 270 Mbps - enables long-haul SDI transmission with ≤0.2 UI output jitter. |
| Supply Voltage | 3.3 V ±5% - single-rail operation compatible with standard broadcast video system power domains. |
| Output Swing | 750 mVP–P differential into 50 Ω - matches SMPTE-compliant receiver input sensitivity and minimizes inter-symbol interference. |
| Power Consumption | 60–77 mA typical ICC - scales inversely with cable length, reducing thermal load in high-density SDI chassis designs. |
| Operating Temperature | −40°C to +85°C - qualified for industrial and broadcast equipment operating in uncontrolled environmental enclosures. |
| Input Interface | AC-coupled single-ended or differential - eliminates need for external transformers and simplifies PCB routing near video sources. |
Pinout & Package
LMH0024MA/NOPB is housed in a 16-pin SOIC package (NS Package Number M16A), with exposed pad not present, thermal resistance θJA = 115°C/W, and footprint compatible with LMH0034 and GS9064.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (CLI) | Cable Length Indicator output | Analog voltage (2.0–2.5 V) inversely tracking equalized cable length; requires active input signal to be valid. |
| 2, 15 (VCC) | Positive power supply | 3.3 V main supply pins - dual connections reduce IR drop and improve PSRR in high-speed operation. |
| 3, 6, 11, 14 (VEE) | Ground reference | Four dedicated ground pins minimize ground bounce and maintain signal integrity for differential paths. |
| 4, 5 (SDI / SDI) | Differential serial data input | Accepts AC-coupled true/complement signals; supports pathological SMPTE RP 178 test patterns. |
| 7, 8 (AEC+ / AEC−) | AEC loop filter interface | Connect external 1 µF capacitor to set adaptive loop bandwidth; determines convergence speed and stability. |
| 9 (BYPASS) | Equalization disable control | High logic disables both equalizer filter and DC restoration - used for low-rate diagnostics or test modes. |
| 10 (NC) | No connect | Unbonded pin - must remain floating; no internal connection or function. |
| 12, 13 (SDO / SDO) | Differential serial data output | 50 Ω internally terminated outputs deliver 750 mVP–P swing; muted when MUTE = high. |
| 16 (MUTE) | Output enable/mute control | Tie to GND for active output; tie to VCC to force SDO/SDO low - prevents spurious output during power-up. |
Key Features
| Feature | Design Value |
|---|---|
| SMPTE 259M/344M compliance | Fully satisfies electrical requirements for standard-definition and enhanced-definition serial digital video transport. |
| Adaptive AEC loop with external capacitor | Enables stable equalization across variable cable lengths and aging effects using user-adjustable 1 µF timing component. |
| DC restoration with bypass option | Maintains baseline stability on pathological video sequences while allowing low-rate operation without restoration overhead. |
| Dual-input interface flexibility | Accepts either single-ended or differential AC-coupled inputs - reduces bill-of-materials and layout constraints in legacy systems. |
| Integrated cable length indicator | Provides real-time analog feedback of equalization demand - useful for remote diagnostics and automatic gain staging. |
Applications
| Broadcast Camera Backend | SDI Distribution Amplifier |
|---|---|
|
Use Scenario: Transmitting uncompressed HD-SDI video from camera head to base station over coaxial cable up to 350 m. IC Role / Device Role / Timing Role: Adaptive equalizer restoring high-frequency loss in Belden 1694A cable while preserving SMPTE 259M eye diagram integrity. Use Value: Enables use of cost-effective passive cabling instead of fiber or repeaters, maintaining <0.2 UI jitter at 270 Mbps. |
Use Scenario: Reconditioning SDI signals before fan-out to multiple monitors or recorders in live production trucks. IC Role / Device Role / Timing Role: Signal integrity recovery stage compensating for cumulative cable loss across multiple daisy-chained devices. Use Value: Eliminates need for discrete equalization stages per output, reducing board area and power by 40% vs. discrete solutions. |
| Video Router Input Stage | OEM Broadcast Equipment Upgrade |
|
Use Scenario: Front-end conditioning of incoming SDI feeds prior to switching matrix in 3G-SDI-capable routers. IC Role / Device Role / Timing Role: Adaptive equalization and DC restoration ensuring clean signal acquisition across mixed cable lengths and vendors. Use Value: Guarantees consistent input eye opening regardless of source cable type, improving router switch reliability and BER. |
Use Scenario: Retrofitting legacy SDI gear (e.g., Gennum GS9064-based designs) with improved equalization and CLI monitoring. IC Role / Device Role / Timing Role: Pin-compatible replacement providing identical footprint and enhanced diagnostics via CLI voltage readback. Use Value: Enables field upgrade without PCB redesign, adding cable health monitoring capability to existing hardware. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar adaptive SDI equalizer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMH0034MA/NOPB | Same SOIC-16 footprint, but lacks CLI output and uses fixed-gain architecture instead of adaptive AEC loop. | Suitable for fixed-length cable runs where dynamic adjustment is unnecessary; lower BOM cost but no cable diagnostics. | Select LMH0034MA/NOPB only when CLI functionality and adaptive response are not required. |
| GS9064-ILQFP | Gennum part in 32-pin LQFP; differs in pinout, power sequencing, and CLI implementation - not pin-compatible. | Used in earlier-generation broadcast gear; requires PCB redesign and firmware adaptation for migration. | Choose GS9064-ILQFP only for legacy repair or cross-manufacturer compatibility testing. |
Compared with LMH0024MA/NOPB, LMH0034MA/NOPB offers simpler fixed-equalization at lower cost but forfeits cable-length visibility and adaptive convergence; GS9064-ILQFP provides comparable performance in different packaging but demands layout changes and lacks integrated CLI voltage telemetry.
Availability
LMH0024MA/NOPB is available at Aetrix Electronics and suitable for broadcast infrastructure, professional video routing, and OEM SDI equipment requiring stable component supply, long-cable signal integrity, and diagnostic feedback via CLI voltage.
Supply support for LMH0024MA/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 acquired National Semiconductor in 2011 and maintains its high-performance analog portfolio, including precision interface ICs for video, communications, and industrial markets.
The LMH0024MA/NOPB belongs to TI's Serial Digital Interface (SDI) product line, engineered specifically for robust, low-jitter equalization in broadcast-grade video transmission systems operating under SMPTE standards.
FAQ
What is the maximum cable length LMH0024MA/NOPB can equalize at 270 Mbps?
The LMH0024MA/NOPB equalizes up to 350 meters of Belden 1694A coaxial cable at 270 Mbps while maintaining ≤0.2 UI output jitter, as validated per SMPTE 259M compliance testing. Performance varies with cable type: 280 m on Belden 8281 at same data rate. CLI voltage provides real-time analog indication of equalization demand.
Does LMH0024MA/NOPB support DVB-ASI applications?
Yes, LMH0024MA/NOPB supports DVB-ASI at 270 Mbps, as explicitly stated in its official features list and confirmed in AC Electrical Characteristics. Its adaptive equalization and DC restoration ensure reliable recovery of ASI-encoded MPEG transport streams over coaxial infrastructure.
How does the CLI (Cable Length Indicator) function on LMH0024MA/NOPB?
The CLI pin on LMH0024MA/NOPB outputs a DC voltage (2.0–2.5 V) inversely proportional to equalized cable length - higher voltage indicates shorter cable, lower voltage indicates longer cable. It is only valid when an input signal is present and requires no external calibration or software interpretation.
Can LMH0024MA/NOPB operate with single-ended input signals?
Yes, LMH0024MA/NOPB accepts AC-coupled single-ended inputs on pins 4 and 5, as documented in the "Input Interfacing" section. No transformer coupling is supported; capacitive coupling with 1.0 µF is required, and common-mode voltage must stay within 1.9 V minimum at the input.
Is LMH0024MA/NOPB pin-compatible with the Gennum GS9064?
No - LMH0024MA/NOPB is footprint compatible with the GS9064 in SOIC-16 packaging, but not functionally or electrically pin-compatible. Pin 16 (MUTE) on LMH0024MA/NOPB must be tied to GND for operation, whereas GS9064 uses that pin differently; migration requires schematic and layout review.
LMH0024MA/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Applications:
- SMPTE 259M / 344M
- Interface:
- Serial
- Voltage - Supply:
- 3.3V
- Supplier Device Package:
- 16-SOIC
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
LMH0024MA/NOPB FAQ
1.How can I place an order for LMH0024MA/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMH0024MA/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 LMH0024MA/NOPB reliable?
The price and inventory of LMH0024MA/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMH0024MA/NOPB is usually 5 days.
3.What payment methods are accepted for LMH0024MA/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMH0024MA/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMH0024MA/NOPB?
LMH0024MA/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMH0024MA/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 LMH0024MA/NOPB?
For technical support, including LMH0024MA/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMH0024MA/NOPB requirements.
6.How does Aetrix verify that LMH0024MA/NOPB is sourced from the original manufacturer or authorized distributors?
All LMH0024MA/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 LMH0024MA/NOPB meets industry standards.
7.What is the process for return or replacement of LMH0024MA/NOPB?
All LMH0024MA/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMH0024MA/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 LMH0024MA/NOPB part is unused and in its original packaging.
Return procedure for LMH0024MA/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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