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Texas Instruments LMH0307GRE/NOPB
- Part No.:
- LMH0307GRE/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Video Processing
- Package:
- 25-TFBGA, CSPBGA
- Datasheet:
-
LMH0307GRE/NOPB.pdf
- Description:
- IC VIDEO DRIVER 25CSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,623
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Product details
Overview
LMH0307GRE/NOPB from Texas Instruments is a 3 Gbps SMPTE-compliant dual-output SDI cable driver IC for broadcast video routing and distribution systems. It delivers two complementary 75Ω outputs with selectable slew rates (SMPTE 259M or 424M/292M), integrated cable detect and loss-of-signal detection, and SMBus-configurable amplitude (±10% in 5 mV steps) - enabling robust signal integrity in digital video routers, distribution amplifiers, and HD/SD-SDI infrastructure.
For engineers reviewing the LMH0307GRE/NOPB datasheet, LMH0307GRE/NOPB pinout, LMH0307GRE/NOPB application, or LMH0307GRE/NOPB equivalent, this page provides verified technical context, validated pin functions, confirmed AC/DC specifications, real-world application mappings, and two rigorously cross-checked alternative parts for SMPTE serial digital interface driver selection.
Technical Context
The LMH0307GRE/NOPB implements two current-mode differential output drivers with independent enable control and shared SMBus interface (default 7-bit address 0x17). Its input accepts differential or single-ended SDI signals up to 2.97 Gbps, while internal sensing logic monitors near-end termination (cable detect) and input pattern validity (LOS) - both reportable via FAULT pin or SMBus STATUS register.
Slew rate is selected per output pair via SD/HD pin (internal pulldown) or SMBus MASK register bit SD; output amplitude is digitally adjustable per channel (AMP0/AMP1 registers); and power-down sequencing supports daisy-chained reset (RSTI/RSTO) for multi-device SMBus addressing - all operating from a single 3.3 V supply across −40°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | Up to 2.97 Gbps - supports SMPTE 424M (3G), 292M (HD), 344M (ED), and 259M (SD) serial digital video standards. |
| Output Type | Dual complementary 75Ω current-mode outputs - drives coaxial cable (e.g., Belden 1694A) without external line drivers. |
| Supply Voltage | 3.3 V ±5% - single-supply operation eliminates need for dual-rail or LDO sequencing in broadcast equipment. |
| Power Consumption | 275 mW typical in HD mode; 4 mW in deep power-save mode - enables thermal management in dense router blades. |
| Jitter Performance | 20 psP–P additive jitter at 2.97 Gbps - meets SMPTE timing budget for reclocking-grade signal regeneration. |
| SMBus Interface | Default 7-bit address 0x17; supports dynamic readdressing - allows up to 127 devices on shared SDA/SCL bus with daisy-chained RSTI/RSTO. |
| Operating Temperature | −40°C to +85°C industrial range - qualified for use in broadcast trucks, OB vans, and studio infrastructure. |
Pinout & Package
LMH0307GRE/NOPB uses the 25-ball CS-BGA package (Package Number NYA, 3 mm × 3 mm, 0.5 mm pitch), with exposed die attach pad (DAP) connected to VEE (ground). Pin functions are validated per TI SNLS286I Rev I datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SDI / SDI | Differential serial data input | Accepts true/complement SDI signals; supports single-ended operation with proper termination of unused input. |
| SDO0 / SDO0, SDO1 / SDO1 | Dual complementary output pairs | Current-mode 75Ω outputs; each pair delivers full-amplitude SMPTE-compliant signal to coaxial cable. |
| RREF | Bias reference terminal | Connects 750 Ω resistor to VCC - sets output common-mode voltage and amplitude; placement critical for jitter performance. |
| SD/HD | Slew rate select input | Low = SMPTE 424M/292M fast edges (400–800 ps); High = SMPTE 259M slower edges (90–130 ps). |
| ENABLE | Output driver enable | Active-high; internal pullup; driving low powers off both outputs and enters 4 mW deep sleep mode. |
| FAULT | Open-drain fault flag | Asserted low on LOS or termination fault; supports wire-OR with multiple LMH0307GRE/NOPB devices. |
| SDA / SCL | SMBus bidirectional data/clock | Two-wire interface for configuring amplitude, slew rate, power-down, masking, and diagnostics registers. |
| RSTI / RSTO | Daisy-chain reset control | RSTI (input, internal pullup) resets device; RSTO (output) signals reset completion - enables multi-device SMBus addressing. |
Key Features
| Feature | Design Value |
|---|---|
| Cable Detect on Output | Senses near-end termination impedance via output amplitude monitoring - detects unconnected or unterminated BNC cables without external components. |
| Loss of Signal (LOS) Detection | Robust pattern-based detection rejecting noise and self-oscillation - triggers FAULT or SMBus STATUS flag and optionally mutes outputs or adds offset. |
| Per-Channel Output Amplitude Control | Adjustable ±10% in 5 mV steps via SMBus OUTPUT0/OUTPUT1 registers - compensates for trace loss or connector variations across PCB designs. |
| Selectably Compliant Slew Rates | Hardware (SD/HD pin) or SMBus-controlled edge rates ensure compliance with SMPTE 259M (SD) or SMPTE 424M/292M (HD/3G) eye diagram masks. |
| Dual Independent Output Power Down | PD0/PD1 bits in SMBus MASK register allow selective shutdown of SDO0 or SDO1 - reduces power in asymmetric routing configurations. |
Applications
| Video Router Input Stage | Distribution Amplifier Output Stage |
|---|---|
|
Use Scenario: A broadcast video router receives multiple SDI inputs and routes them to configurable outputs under FPGA control. IC Role / Device Role / Timing Role: LMH0307GRE/NOPB acts as input buffer and cable driver, conditioning incoming SDI signals and providing robust drive capability to backplane traces or daughter cards. Use Value: Cable detect prevents false routing due to disconnected sources; LOS detection alerts system firmware to missing feeds before switching occurs. |
Use Scenario: A 1-to-16 SDI distribution amplifier splits one high-quality source to multiple monitors, recorders, or processing units. IC Role / Device Role / Timing Role: LMH0307GRE/NOPB serves as final-stage output driver, delivering matched-amplitude, low-jitter signals to each coaxial output port. Use Value: Per-channel amplitude tuning ensures uniform signal level across all 16 outputs; dual outputs reduce component count per channel. |
| OB Van Signal Conditioning | Studio Infrastructure Redundancy Module |
|
Use Scenario: Mobile production unit requires reliable SDI signal transmission over long cable runs in vibration-prone environments. IC Role / Device Role / Timing Role: LMH0307GRE/NOPB operates as active cable driver with real-time termination validation - confirming BNC connection integrity before transmission. Use Value: Fault reporting via FAULT pin enables automatic failover or operator alert when cable disconnection occurs mid-broadcast. |
Use Scenario: Critical studio infrastructure employs hot-swappable redundant signal paths with automatic switchover on failure. IC Role / Device Role / Timing Role: LMH0307GRE/NOPB provides dual-output capability where one output feeds primary path and second feeds backup path, both monitored via SMBus. Use Value: SMBus STATUS register allows host MCU to poll LOS and termination status on both outputs independently - enabling precise fault localization. |
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 |
|---|---|---|---|
| LMH0384SQ/NOPB | Single 75Ω output; no cable detect or LOS; fixed 800 mVP–P amplitude; no SMBus interface. | Lower pin count and cost for non-diagnostic, fixed-gain point-to-point links. | Select when diagnostic features and dual outputs are unnecessary - reduces BOM and layout complexity. |
| GS2971-IBE3 | Single 75Ω output; supports SMPTE ST 2081 (12G-SDI); includes integrated reclocker; requires external reference clock. | Targeted at next-gen 12G-SDI infrastructure with embedded timing recovery. | Choose for future-proof 12G-SDI systems requiring jitter cleanup - not drop-in compatible with LMH0307GRE/NOPB. |
Compared with LMH0307GRE/NOPB, LMH0384SQ/NOPB offers simpler integration but lacks diagnostics and dual-drive capability, while GS2971-IBE3 enables 12G-SDI but requires reclocking architecture changes and has no cable detect - making LMH0307GRE/NOPB optimal for cost-sensitive, diagnostic-enabled 3G/HD/SD-SDI routing and distribution.
Availability
LMH0307GRE/NOPB is available at Aetrix Electronics and suitable for broadcast video routers, SDI distribution amplifiers, and OB van signal conditioning systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for LMH0307GRE/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 connectivity solutions for industrial, automotive, and communications markets.
The LMH0307GRE/NOPB belongs to TI's high-speed serial interface product line, engineered specifically for SMPTE-compliant broadcast video infrastructure - emphasizing signal integrity, cable diagnostics, and system-level fault visibility in professional video equipment.
FAQ
What is the function of the RREF pin on the LMH0307GRE/NOPB?
The RREF pin on the LMH0307GRE/NOPB sets the output common-mode voltage and amplitude by connecting a precision 750 Ω resistor to VCC. This resistor defines the bias current for the current-mode outputs; deviation from 750 Ω directly impacts output swing (target 800 mVP–P) and jitter performance. TI specifies placement adjacent to the pin and removal of underlying copper to minimize parasitic capacitance - critical for maintaining SMPTE 424M compliance in the LMH0307GRE/NOPB.
Does the LMH0307GRE/NOPB support both SD and HD SDI standards simultaneously?
No - the LMH0307GRE/NOPB supports either SD (SMPTE 259M) or HD/3G (SMPTE 424M/292M) modes, selected globally via the SD/HD pin or SMBus MASK register bit SD. Both outputs switch together; it does not operate one output in SD mode and the other in HD mode. The 90–130 ps rise/fall time in SD mode and 400–800 ps in HD mode are optimized for respective eye mask requirements - confirmed in AC Electrical Characteristics of the LMH0307GRE/NOPB datasheet.
How does cable detection work in the LMH0307GRE/NOPB?
Cable detection in the LMH0307GRE/NOPB measures output amplitude during active transmission: properly terminated 75Ω loads yield expected voltage levels, while open or mismatched terminations cause signal reflection and elevated amplitude. The device compares sensed amplitude against thresholds (configurable via HDTF0Thresh/SDTF0Thresh registers) and asserts TF0P/TF0N or TF1P/TF1N flags in SMBus STATUS register. This feature requires the output drivers to be enabled - the LMH0307GRE/NOPB must be powered and actively driving to perform detection.
Can the LMH0307GRE/NOPB operate with a single-ended input?
Yes - the LMH0307GRE/NOPB accepts single-ended SDI input by connecting the signal to SDI pin and terminating SDI with a 75Ω resistor to VEE (ground). The datasheet explicitly states this configuration is supported, though differential input is preferred for common-mode noise rejection. Input voltage swing remains 100–2200 mVP–P, and DC common-mode voltage must stay within 1.6 V + VSDI/2, as specified for the LMH0307GRE/NOPB's differential input stage.
What is the purpose of the RSTI and RSTO pins on the LMH0307GRE/NOPB?
RSTI (Reset Input) and RSTO (Reset Output) enable daisy-chained SMBus addressing for multiple LMH0307GRE/NOPB devices sharing SDA/SCL lines. Driving RSTI low resets the device and forces RSTO low; writing to Register 0 (ID) causes RSTO to go high, signaling readiness to the next device in chain. This sequence allows dynamic reassignment of SMBus addresses - essential because all LMH0307GRE/NOPB units ship with identical default address (0x17), and collision-free communication requires unique IDs.
LMH0307GRE/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 25-TFBGA, CSPBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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)
LMH0307GRE/NOPB FAQ
1.How can I place an order for LMH0307GRE/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMH0307GRE/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 LMH0307GRE/NOPB reliable?
The price and inventory of LMH0307GRE/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMH0307GRE/NOPB is usually 5 days.
3.What payment methods are accepted for LMH0307GRE/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMH0307GRE/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMH0307GRE/NOPB?
LMH0307GRE/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMH0307GRE/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 LMH0307GRE/NOPB?
For technical support, including LMH0307GRE/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMH0307GRE/NOPB requirements.
6.How does Aetrix verify that LMH0307GRE/NOPB is sourced from the original manufacturer or authorized distributors?
All LMH0307GRE/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 LMH0307GRE/NOPB meets industry standards.
7.What is the process for return or replacement of LMH0307GRE/NOPB?
All LMH0307GRE/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMH0307GRE/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 LMH0307GRE/NOPB part is unused and in its original packaging.
Return procedure for LMH0307GRE/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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