LMH0303 Texas instruments

LMH0303

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LMH0303

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Описание

The LMH0303 device is designed for use in ST 424, ST 292, ST 344, and ST 259 serial digital video applications. The LMH0303 drives 75-Ω transmission lines (Belden 1694A, Belden 8281, or equivalent) at data rates up to 2.97 Gbps. The LMH0303 includes intelligent sensing capabilities to improve system diagnostics. The cable detect feature senses near-end termination to determine if a cable is correctly attached to the output BNC. Input loss of signal (LOS) detects the presence of a valid signal at the input of the cable driver. These sensing features may be used to alert the user of a system fault and activate a deep power-save mode, reducing the power consumption of the cable driver to 4 mW. These features are accessible through an SMBus interface. The LMH0303 provides two selectable slew rates for ST 259 and ST 424 or 292. The output amplitude is adjustable ±10% in 5-mV steps through the SMBus. The LMH0303 is powered from a single 3.3-V supply. Power consumption is typically 130 mW in SD mode and 155 mW in HD mode. The LMH0303 is available in a 16-pin WQFN package.

Supports ST 424 (3G), 292 (HD), and 259 (SD)
Data Rates up to 2.97 Gbps
Supports DVB-ASI at 270 Mbps
Cable Detect on Output
Loss of Signal Detect at Input
Output Driver Power-Down Control
Typical Power Consumption: 130 mW in SD Mode
and 155 mW in HD Mode
Typical Power Consumption of the Power-Save
Mode: 4 mW
Single 3.3-V Supply Operation
75-Ω Single-Ended Outputs
100-Ω Differential Input
Selectable Slew Rate
Industrial Temperature Range: –40°C to 85°C
16-Pin WQFN Package
Footprint Compatible With the LMH0302

Function	Cable driver
Supply voltage (V)	3.3
Power consumption (mW)	155
Data rate (max) (MBits)	2970
Control interface	Pin, SMBus
Operating temperature range (°C)	-40 to 85