Overview
The LMH0307SQX/NOPB is a 3 Gbps HD/SD SDI Dual Output Cable Driver with Cable Detect, designed and manufactured by Texas Instruments. This component is specifically tailored for use in SMPTE 424M, SMPTE 292M, SMPTE 344M, and SMPTE 259M serial digital video applications. It features two complementary output drivers capable of driving 75Ω transmission lines at data rates up to 2.97 Gbps. The device includes advanced sensing capabilities for system diagnostics, such as cable detect and input loss of signal detection, which can be accessed via an SMBus interface. The LMH0307 operates on a single 3.3V supply and is available in two compact packages: a 16-pin WQFN and a 25-ball CS-BGA package.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Data Rate | Up to 2.97 Gbps | Gbps |
| Output Drivers | Dual Complementary | - |
| Output Load | 75Ω | Ω |
| Supply Voltage | 3.3V ±5% | V |
| Operating Temperature | −40°C to +85°C | °C |
| Power Consumption (SD Mode) | Typically 230 mW | mW |
| Power Consumption (HD Mode) | Typically 275 mW | mW |
| Power Save Mode Consumption | Typically 4 mW | mW |
| Package Options | 16-pin WQFN, 25-ball CS-BGA | - |
| Input Type | Differential or Single-Ended | - |
| Output Slew Rate | Selectable for SMPTE 259M and SMPTE 424M / 292M compliance | - |
| Output Amplitude Adjustment | ±10% in 5 mV steps via SMBus | - |
Key Features
- Cable Detect: Senses near-end termination to determine if a cable is correctly attached to the output BNC.
- Input Loss of Signal (LOS) Detection: Detects the presence of a valid signal at the input of the cable driver.
- Selectable Slew Rate: For SMPTE 259M and SMPTE 424M / 292M compliance.
- Output Amplitude Adjustment: Adjustable ±10% in 5 mV steps via SMBus.
- Power Save Mode: Reduces power consumption to 4 mW when enabled.
- SMBus Interface: For accessing and controlling various device features.
- Dual Complementary Output Drivers: Drives 75Ω transmission lines.
- Single 3.3V Supply Operation: Simplifies power management.
- Industrial Temperature Range: Operates from −40°C to +85°C.
Applications
- SMPTE 424M, SMPTE 292M, SMPTE 344M, and SMPTE 259M Serial Digital Interfaces.
- Digital Video Routers and Switches.
- Distribution Amplifiers.
Q & A
- What is the maximum data rate supported by the LMH0307?
The LMH0307 supports data rates up to 2.97 Gbps.
- What types of output drivers does the LMH0307 feature?
The LMH0307 features dual complementary output drivers.
- How does the cable detect feature work?
The cable detect feature senses near-end termination to determine if a cable is correctly attached to the output BNC.
- What is the purpose of the input loss of signal (LOS) detection?
The input LOS detection senses the presence of a valid signal at the input of the cable driver.
- How can the output slew rate be adjusted?
The output slew rate is selectable for SMPTE 259M and SMPTE 424M / 292M compliance via the SD/HD pin or SMBus.
- Can the output amplitude be adjusted, and if so, how?
Yes, the output amplitude is adjustable ±10% in 5 mV steps via the SMBus.
- What is the power consumption in SD and HD modes?
Typically 230 mW in SD mode and 275 mW in HD mode.
- What is the power consumption in power save mode?
Typically 4 mW in power save mode.
- In what temperature range can the LMH0307 operate?
The LMH0307 operates from −40°C to +85°C.
- What are the package options for the LMH0307?
The LMH0307 is available in 16-pin WQFN and 25-ball CS-BGA packages.
