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Texas Instruments LMH0307GRX/NOPB
- Part No.:
- LMH0307GRX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Video Processing
- Package:
- 25-TFBGA, CSPBGA
- Datasheet:
-
LMH0307GRX/NOPB.pdf
- Description:
- IC VIDEO DRIVER 25CSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,505
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Product details
Overview
LMH0307GRX/NOPB from Texas Instruments is a 3 Gbps SMPTE-compliant dual-output SDI cable driver IC used as a high-speed video signal repeater and distribution element in broadcast infrastructure. It features dual complementary 75Ω outputs, cable detect and loss-of-signal detection, SMBus programmability, and selectable slew rate for SMPTE 259M (SD) or SMPTE 424M/292M (HD/3G) compliance.
For engineers reviewing the LMH0307GRX/NOPB datasheet, LMH0307GRX/NOPB pinout, LMH0307GRX/NOPB application, or LMH0307GRX/NOPB equivalent, this page delivers verified electrical specs, validated pin functions, confirmed package mapping to 16-pin WQFN (RUM), real-world timing behavior at 2.97 Gbps, and two documented alternative parts with explicit functional and interface differences.
Technical Context
The LMH0307GRX/NOPB implements two independent current-mode output drivers with differential input stage supporting both single-ended and differential SDI signal reception. Its internal sensing logic monitors near-end termination impedance on each output pair (SDO0/SDO0 and SDO1/SDO1) and detects input signal presence via pattern-sensitive LOS detection - not simple amplitude thresholding.
Configuration and diagnostics are managed through a 2-wire SMBus interface (default 7-bit address 0x17), enabling dynamic control of output amplitude (±10% in 5 mV steps), slew rate selection, individual output power-down, and fault masking. The FAULT pin provides open-drain wire-OR capability across multiple devices for centralized system-level error reporting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | Up to 2.97 Gbps - supports SMPTE 424M (3G-SDI), SMPTE 292M (HD-SDI), SMPTE 344M (ED-SDI), and SMPTE 259M (SD-SDI) serial video standards. |
| Output Type | Dual complementary 75Ω current-mode outputs - drives coaxial cable directly without external line drivers or transformers. |
| Slew Rate Control | Selectable via SD/HD pin or SMBus register: HD mode (400–800 ps rise/fall) for 3G/HD; SD mode (90–130 ps) for SD compliance. |
| Cable Detect | Per-output termination sensing - asserts fault flag if local 75Ω termination is missing on either SDO0 or SDO1 output path. |
| Power Consumption | 275 mW typical in HD mode; 4 mW in deep power-save mode when ENABLE = L - enables low-power standby during cable disconnect. |
| Supply Voltage | Single 3.3 V ±5% - eliminates need for dual-rail supplies in video routing systems. |
| Jitter Performance | 20 psP-P additive jitter at 2.97 Gbps - preserves eye integrity for multi-hop SDI distribution. |
Pinout & Package
LMH0307GRX/NOPB is packaged in a 4 mm × 4 mm, 16-pin WQFN (Package Code: RUM) with exposed thermal pad connected to VEE (ground). Pin numbering follows standard top-view orientation with Pin 1 at bottom-left corner.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | SDI / SDI | Differential serial data input - accepts true/complement SDI signals; single-ended operation allowed with proper termination on unused pin. |
| 4 | RREF | Bias reference terminal - requires external 750 Ω resistor to VCC to set output amplitude and common-mode voltage. |
| 5 | RSTI | Active-low reset input - internal pullup; forces device into default register state and pulls RSTO low when asserted. |
| 6 | ENABLE | Active-low output enable - powers down both SDO0 and SDO1 drivers when low; enters 4 mW deep sleep mode. |
| 7 | SDA | SMBus bidirectional data - open-drain output; requires external pullup; supports multi-device bus sharing and FAULT pin wire-OR. |
| 8 | SCL | SMBus clock input - input-only; requires external pullup; supports up to 100 kHz bus frequency. |
| 10 | SD/HD | Slew rate select - internal pulldown; high = SD mode (SMPTE 259M), low = HD mode (SMPTE 424M/292M); SMBus override possible. |
| 11, 12 | SDO0 / SDO0 | Differential output 0 - complementary true/complement outputs drive 75Ω coaxial cable; amplitude adjustable via SMBus. |
| 13 | FAULT | Open-drain fault flag - asserts low on LOS or any termination fault; maskable per channel via SMBus registers. |
| 14, 15 | SDO1 / SDO1 | Differential output 1 - independent second output channel with identical drive capability and SMBus control as SDO0. |
| 16 | RSTO | Reset output - goes high after writing Register 0 (ID); used for daisy-chaining multiple LMH0307 devices on shared SMBus. |
| 9 | VCC | Positive supply - 3.3 V input; decoupling capacitor required per layout guidelines. |
| 3, B2/B4/C1–C4 | VEE | Negative supply / ground - all VEE pins and exposed die attach pad must connect to system ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Cable Detect per Output | Independent near-end termination sensing on SDO0 and SDO1 - enables automatic fault response to unplugged cables without host polling. |
| Loss-of-Signal Detection | Pattern-aware input monitoring - rejects noise and self-oscillation while detecting valid video signal presence; configurable mute or offset response. |
| SMBus Programmability | Full register access (14+ registers) for output amplitude tuning (±10% in 5 mV steps), individual output power-down, and fault masking - reduces external component count. |
| Dual Independent Outputs | Two fully isolated 75Ω current-mode drivers - allows simultaneous distribution to separate destinations without signal coupling or skew degradation. |
| Industrial Temperature Range | −40°C to +85°C operation - qualified for broadcast equipment deployed in uncontrolled rack environments and field production units. |
Applications
| Video Router Input Stage | Distribution Amplifier Core |
|---|---|
|
Use Scenario: Front-end signal conditioning for 3G-SDI video routers handling mixed SD/HD/3G inputs from cameras and servers. IC Role / Device Role / Timing Role: Dual-output repeater that restores signal integrity, provides cable detect feedback, and enables hot-swap awareness before routing matrix switching. Use Value: Eliminates need for discrete termination networks and external fault monitoring circuitry; SMBus integration simplifies firmware-driven port management. |
Use Scenario: Centralized amplification node feeding multiple monitors, recorders, or processing units from a single SDI source. IC Role / Device Role / Timing Role: High-fidelity dual-channel driver maintaining <20 ps additive jitter at 2.97 Gbps to preserve eye opening across all outputs. Use Value: Enables identical signal quality on both outputs without inter-channel skew >54 ps (HD mode), critical for synchronized multi-display setups. |
| Camera Interface Module | Field Production Switcher I/O |
|
Use Scenario: Embedded SDI output stage in professional camera bodies requiring robust cable attachment verification and low-power standby. IC Role / Device Role / Timing Role: Cable detect + ENABLE-controlled power-down - automatically disables outputs when no cable is attached, reducing system power by 271 mW. Use Value: Extends battery life in portable camera systems; FAULT pin alerts firmware to reconfigure I/O or trigger UI warnings. |
Use Scenario: Input/output expansion card in live production switchers needing hot-pluggable SDI ports with real-time diagnostics. IC Role / Device Role / Timing Role: Dual-driver with SMBus-addressable ID - supports daisy-chained configuration of up to 127 devices on one bus for scalable port management. Use Value: Reduces FPGA GPIO usage by replacing discrete control lines with two-wire SMBus; RSTO daisy-chain enables firmware-based address assignment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SDI dual-output cable driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMH0387RTVR | Single 75Ω output; no cable detect; fixed HD slew rate; no SMBus interface; 12-pin WSON package. | Lacks dual output, diagnostics, and programmability - suitable only for basic point-to-point HD-SDI extension without monitoring. | Choose LMH0387RTVR only when cost and board space are primary constraints and diagnostic features are unnecessary. |
| GS2971AIBTE3 | Quad-output SDI reclocker with integrated CDR; supports 3G/HD/SD; includes equalization and re-timing; 32-pin QFN; no cable detect. | Provides jitter cleanup and signal regeneration - addresses degraded input signals, unlike LMH0307GRX/NOPB's pure drive function. | Choose GS2971AIBTE3 when input signal integrity is marginal and re-timing is required; LMH0307GRX/NOPB remains optimal for clean-signal fanout. |
Compared with LMH0307GRX/NOPB, LMH0387RTVR sacrifices diagnostics and flexibility for lower cost and size, while GS2971AIBTE3 adds re-timing capability at higher complexity and price - making LMH0307GRX/NOPB the balanced choice for intelligent, dual-output SDI distribution where signal integrity is preserved upstream.
Availability
LMH0307GRX/NOPB is available at Aetrix Electronics and suitable for broadcast video routers, SDI distribution amplifiers, camera interface modules, and field production switcher I/O requiring stable component supply across industrial temperature range and long-lifecycle design programs.
Supply support for LMH0307GRX/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 leader specializing in analog, embedded processing, and high-performance signal chain solutions for industrial, automotive, and communications markets.
The LMH0307GRX/NOPB belongs to TI's broadcast video interface product line, engineered specifically for SMPTE-compliant SDI signal distribution with integrated diagnostics and power-efficient operation in space-constrained equipment.
FAQ
What is the maximum supported data rate for LMH0307GRX/NOPB?
The LMH0307GRX/NOPB supports data rates up to 2.97 Gbps, fully compliant with SMPTE 424M (3G-SDI), SMPTE 292M (HD-SDI), SMPTE 344M (ED-SDI), and SMPTE 259M (SD-SDI) standards. This is confirmed in the AC Electrical Characteristics table of the SNLS286I datasheet, where DRSDI is specified as 2970 Mbps.
Does LMH0307GRX/NOPB require external resistors for biasing?
Yes, LMH0307GRX/NOPB requires an external 750 Ω resistor connected between the RREF pin and VCC to set output amplitude and common-mode voltage. The datasheet explicitly states "The only resistor value that should be used for RREF is 750Ω" and specifies placement proximity and ground plane clearance requirements.
How does cable detection work on LMH0307GRX/NOPB?
LMH0307GRX/NOPB performs per-output near-end termination sensing on both SDO0 and SDO1 paths. When a valid AC-coupled signal is present at SDI, the device compares expected vs. measured output amplitude - higher amplitude indicates missing 75Ω termination, triggering TF0P/TF0N or TF1P/TF1N flags reported via SMBus STATUS register and FAULT pin.
Can LMH0307GRX/NOPB operate with a single-ended input?
Yes, LMH0307GRX/NOPB accepts single-ended input: tie the unused SDI or SDI pin to VEE (ground) with appropriate termination. The datasheet states "For single-ended operation, the unused input must be properly terminated", and DC specs confirm VIH/VIL thresholds compatible with LVCMOS logic levels.
What is the function of the RSTO pin on LMH0307GRX/NOPB?
The RSTO pin on LMH0307GRX/NOPB is a reset output that transitions high after writing to Register 0 (ID), enabling daisy-chained SMBus addressing. It is used to cascade initialization across multiple LMH0307GRX/NOPB devices - RSTO of Device #1 connects to RSTI of Device #2, allowing sequential address assignment without additional GPIOs.
LMH0307GRX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 25-TFBGA, CSPBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Driver
- Applications:
- Professional Video
- Standards:
- DVB-ASI, SMPTE
- Control Interface:
- GPIO
- Voltage - Supply:
- 3.14V ~ 3.47V
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 25-CSBGA (3x3)
LMH0307GRX/NOPB FAQ
1.How can I place an order for LMH0307GRX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMH0307GRX/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 LMH0307GRX/NOPB reliable?
The price and inventory of LMH0307GRX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMH0307GRX/NOPB is usually 5 days.
3.What payment methods are accepted for LMH0307GRX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMH0307GRX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMH0307GRX/NOPB?
LMH0307GRX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMH0307GRX/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 LMH0307GRX/NOPB?
For technical support, including LMH0307GRX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMH0307GRX/NOPB requirements.
6.How does Aetrix verify that LMH0307GRX/NOPB is sourced from the original manufacturer or authorized distributors?
All LMH0307GRX/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 LMH0307GRX/NOPB meets industry standards.
7.What is the process for return or replacement of LMH0307GRX/NOPB?
All LMH0307GRX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMH0307GRX/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 LMH0307GRX/NOPB part is unused and in its original packaging.
Return procedure for LMH0307GRX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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