| Diff gain (%) | 0.13 |
| Output current (Typ) (mA) | 70 |
| Vs (Min) (V) | 2.6 |
| Vs (Max) (V) | 5.5 |
| Diff phase (deg) | 0.55 |
| Operating temperature range (C) | -40 to 85 |
| Rating | Catalog |
- 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.
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.
