Fabricated using the new complementary silicon-germanium (SiGe) BiCom-3 process, the THS7303 is a low-power, single-supply, 2.7-V to 5-V, 3-channel integrated video buffer. It incorporates a selectable fifth-order Butterworth filter to eliminate data converter images. The 9-MHz filter is a perfect choice for SDTV video including composite (CVBS), S-Video, and 480i/576i Y"P"BP"R, and G"B"R" (R"G"B") signals. The 16-MHz filter is ideal for EDTV 480p/576p Y"P"BP"R, G"B"R", and VGA signals. The 35-MHz filter is useful for HDTV 720p/1080i Y"P"BP"R, G"B"R", and SVGA/XGA signals. For 1080p or SXGA/UXGA signals, the filter can be bypassed allowing a 190-MHz bandwidth, 300-V/µs amplifier to buffer the signal.
●Each channel of the THS7303 is individually I2C configurable for all functions which makes it flexible for any application. Its rail-to-rail output stage allows for both ac and dc coupling applications. The 6-dB gain along with the built-in SAG correction allows for maximum flexibility as an output video buffer.
●The 16.6-mA total quiescent current (55 mW total power) makes the THS7303 an excellent choice for USB powered or portable video applications. While fully disabled, the THS7303 consumes less than 1 µA making it ideal for energy sensitive applications.
●As part of the THS7303 flexibility, the 2:1 MUX input can be selected for ac- or dc-coupled inputs. The ac-coupled modes include a sync-tip-clamp option for CVBS/Y"/G"/B"/R" with sync or a fixed bias for the C"/P"B/P"R non-sync channels. The dc input options include a dc input or a (dc + 135-mV) input offset shift to allow for a full sync dynamic range at the output with 0-V input.
● 3-Video Amplifiers for CVBS, S-Video, Y"U"V", SD/ED/HD Y"P"BP"R, and G"B"R" (R"G"B")
● I2C™ Control of All Functions
● Integrated Low-Pass Filters
● 5th-Order Butterworth Characteristics
● Selectable Corner Frequencies of 9-MHz, 16-MHz, 35-MHz, and Bypass (190-MHz)
● Selectable Input Bias Modes
● AC-Coupled with Sync-Tip-Clamp
● AC-Coupled with Bias
● DC-Coupled with 135-mV Input Shift
● DC-Coupled
● 2:1 Input MUX Allows Multiple Input Sources
● Built-in 6-dB Gain (2 V/V)
● SAG Correction Capable
● 2.7-V to 5-V Single Supply Operation
● Low 16.6-mA (3.3 V) Total Quiscent Current
● Individual Disable (< 1 µA) and Mute Control
● Rail-to-Rail Output:
● Output Swings within 100 mV from the Rails to Allow AC or DC Output Coupling
● Supports Driving Two Lines per Channel
● Low Differential Gain/Phase of 0.13%/0.55°
● APPLICATIONS
● Set Top Box Output Video Buffering
● PVR/DVDR Output Buffering
● USB/Portable Low Power Video Buffering
●Windows is a registered trademark of Microsoft Corporation.
●I2C is a trademark of NXP Semiconductors.
●All other trademarks are the property of their respective owners.
