THS7303 3-Ch Low Power Video Amp w/I2C Control, Select Filters +6db Gain 2:1 Input MUX |


3-Ch Low Power Video Amp w/I2C Control, Select Filters +6db Gain 2:1 Input MUX



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°
    • Set Top Box Output Video Buffering
    • PVR/DVDR Output Buffering
    • USB/Portable Low Power Video Buffering

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    I2C is a trademark of NXP Semiconductors.
    All other trademarks are the property of their respective owners.

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    Parametrics Compare all products in Video amplifiers

    Diff gain (%)
    Output current (Typ) (mA)
    Vs (Min) (V)
    Vs (Max) (V)
    Diff phase (deg)
    Number of channels (#)
    Operating temperature range (C)
    Package Group
    Package size: mm2:W x L (PKG)
    THS7303 THS7313
    0.13     0.07    
    70     70    
    2.6     2.6    
    5.5     5.5    
    0.55     0.12    
    3     3    
    -40 to 85     -40 to 85    
    TSSOP | 20     TSSOP | 20    
    20TSSOP: 42 mm2: 6.4 x 6.5 (TSSOP | 20)     20TSSOP: 42 mm2: 6.4 x 6.5 (TSSOP | 20)    
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