Overview
The LMH0307SQE/NOPB, manufactured by Texas Instruments, is a 3 Gbps HD/SD SDI dual output cable driver designed for high-performance video transmission. This component is compliant with SMPTE 259M, SMPTE 424M, SMPTE 292M, and SMPTE 344M standards, making it suitable for a wide range of professional video applications. The LMH0307 features advanced sensing capabilities, including cable detect and input loss of signal detection, which enhance system diagnostics and power management. It operates from 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 | Description | Value |
|---|---|---|
| Data Rate | Maximum data rate supported | Up to 2.97 Gbps |
| Output Type | Type of output drivers | Dual Complementary 75Ω Outputs |
| Input Type | Type of input accepted | Differential or Single-Ended |
| Supply Voltage | Operating supply voltage | Single 3.3V |
| Power Consumption | Typical power consumption in SD and HD modes | 230 mW (SD), 275 mW (HD) |
| Power Save Mode | Typical power consumption in power save mode | 4 mW |
| Operating Temperature | Industrial temperature range | −40°C to +85°C |
| Package Options | Available package types | 16-Pin WQFN, 25-Ball CS-BGA |
Key Features
- Cable Detect: Senses near-end termination to determine if a cable is correctly attached to the output BNC.
- Loss of Signal Detect: Detects the presence of a valid signal at the input of the cable driver.
- Output Driver Power Down Control: Allows enabling or disabling of output drivers, entering a deep power save mode when disabled.
- Selectable Slew Rate: Supports selectable slew rates for compliance with SMPTE 259M and SMPTE 424M / 292M standards.
- SMBus Interface: Provides access to various features and settings via an SMBus interface.
- Adjustable Output Amplitude: Output amplitude is adjustable ±10% in 5 mV steps via the SMBus.
Applications
- SMPTE 424M, SMPTE 292M, SMPTE 344M, and SMPTE 259M Serial Digital Interfaces: Ideal for professional video transmission systems.
- Digital Video Routers and Switches: Enhances signal integrity and diagnostics in video routing systems.
- Distribution Amplifiers: Used in video distribution systems to ensure high-quality signal transmission.
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 input signals does the LMH0307 accept?
The LMH0307 accepts both differential and single-ended input signals.
- 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 typical power consumption of the LMH0307 in SD and HD modes?
The typical power consumption is 230 mW in SD mode and 275 mW in HD mode.
- What is the power consumption in power save mode?
The power consumption in power save mode is typically 4 mW.
- What are the available package options for the LMH0307?
The LMH0307 is available in 16-Pin WQFN and 25-Ball CS-BGA packages.
- How does the loss of signal detect feature work?
The loss of signal detect feature detects the presence of a valid signal at the input of the cable driver and can mute the outputs or add an offset if no signal is detected.
- Can the output amplitude be adjusted?
Yes, the output amplitude is adjustable ±10% in 5 mV steps via the SMBus interface.
- What standards is the LMH0307 compliant with?
The LMH0307 is compliant with SMPTE 259M, SMPTE 424M, SMPTE 292M, and SMPTE 344M standards.
- How is the slew rate controlled?
The slew rate is selectable for either SMPTE 259M or SMPTE 424M / 292M compliance via the SD/HD pin or the SMBus interface.
