描述 Description

Fabricated using the Silicon-Germanium (SiGe) BiCom-III process, the THS7316 is a low power single-supply 3-V to 5-V, 3-channel integrated video buffer. It incorporates a 5th-order modified Butterworth filter which is useful as a DAC reconstruction filter or an ADC anti-aliasing filter. The 36-MHz filter is a perfect choice for HDTV video which includes Y?P?BP?R 720p/1080i, G?B?R? (R?G?B?), and VGA/SVGA/XGA signals. As part of the THS7316 flexibility, the input can be configured for ac or dc coupled inputs. The DC + 140-mV input offset shift to allow for a full sync dynamic range at the output with 0-V input. The AC coupled modes include a transparent sync-tip clamp option for signals with sync such as Y? or Green with sync. AC-coupled biasing for P?B/P?R/Non-sync channels can be achieved by adding an external resistor. The THS7316 is the perfect choice for all output buffer applications. Its rail-to-rail output stage with 6-dB gain allows for both ac and dc line driving. The ability to drive 2 video lines per channel, or 75- loads, allows for maximum flexibility as a video line driver. The 18.3-mA total quiescent current makes it an excellent choice for USB powered, portable, or other power sensitive video applications. The THS7316 is available in a small SOIC-8 package that is RoHS compliant.

特性 Features

? 3 HDTV Video Amplifiers for Y’P’BP’R 720p and 1080i, G’B’R’ (R’G’B’), VGA/SVGA/XGA
? Integrated Low-Pass Filters
? 5th-Order 36-MHz (–3 dB) Butterworth Filter
? –1 dB Passband Bandwidth at 31 MHz
? 30 dB Attenuation at 74 MHz


? Versatile Input Biasing
? DC-Coupled With 140-mV Input Shift
? AC-Coupled with Sync-Tip Clamp
? Allows AC-Coupled With Biasing

? Built-in 6-dB Gain (2V/V)
? 3-V to 5-V Single Supply Operation
? Rail-to-Rail Output:
? Output Swings Within 100 mV From the Rails Allowing AC or DC Output Coupling
? Supports Driving 2 Lines per Channel

? Low 18.3-mA at 3.3-V Total Quiescent Current
? Low Differential Gain/Phase of 0.1% / 0.1°
? SOIC-8 Package
? APPLICATIONS
? Set Top Box Output Video Buffering
? PVR/DVDR Output Buffering
? USB/Portable Low Power Video Buffering