Overview
The LMH0002SQ is a SMPTE 292M / 259M serial digital cable driver produced by Texas Instruments, not National Semiconductor. It is a monolithic, high-speed cable driver designed for use in SMPTE 292M / 259M serial digital video and ITU-T G.703 serial digital data transmission applications. The device drives 75Ω transmission lines at data rates up to 1.485 Gbps and is powered from a single 3.3V supply.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Package Type | WQFN (RUM) | |
| Pins | 16 | |
| Operating Temperature Range | −40°C to +85°C | °C |
| Supply Voltage | 3.3V ±5% | V |
| Data Rates | Up to 1.485 Gbps | Gbps |
| Output Impedance | 75Ω Differential | Ω |
| Power Consumption (SD Mode) | 125 mW | mW |
| Power Consumption (HD Mode) | 149 mW | mW |
Key Features
- SMPTE 292M, SMPTE 344M, and SMPTE 259M compliant
- Supports DVB-ASI at 270 Mbps
- Differential input
- 75Ω differential output
- Selectable slew rate
- Adjustable output amplitude via a single external resistor
- Single 3.3V supply operation
- Available in 8-pin SOIC or 16-pin WQFN package
- Replaces the Gennum GS1528, GS1528A, or GS1578A
Applications
- SMPTE 292M, SMPTE 344M, and SMPTE 259M serial digital interfaces
- Sonet/SDH and ATM interfaces
- Digital routers and switches
- Distribution amplifiers
- Buffer applications
- Set top boxes
- Security cameras
Q & A
- What is the primary function of the LMH0002SQ?
The LMH0002SQ is a serial digital cable driver designed for use in SMPTE 292M / 259M serial digital video and ITU-T G.703 serial digital data transmission applications.
- What are the supported data rates for the LMH0002SQ?
The LMH0002SQ supports data rates up to 1.485 Gbps.
- What is the output impedance of the LMH0002SQ?
The output impedance is 75Ω differential.
- How is the output voltage swing adjusted on the LMH0002SQ?
The output voltage swing is adjustable via a single external resistor connected to the RREF pin.
- What are the power consumption levels for the LMH0002SQ in SD and HD modes?
The power consumption is typically 125 mW in SD mode and 149 mW in HD mode.
- In what packages is the LMH0002SQ available?
The LMH0002SQ is available in 8-pin SOIC or 16-pin WQFN packages.
- What devices does the LMH0002SQ replace?
The LMH0002SQ replaces the Gennum GS1528, GS1528A, or GS1578A.
- What is the operating temperature range for the LMH0002SQ?
The operating temperature range is −40°C to +85°C.
- Is the LMH0002SQ compliant with SMPTE standards?
Yes, the LMH0002SQ is compliant with SMPTE 292M, SMPTE 344M, and SMPTE 259M standards.
- What is the supply voltage for the LMH0002SQ?
The supply voltage is 3.3V ±5%.
