1FEATURES

2345• 3-Video Amplifiers for CVBS, S-Video,

SD/ED/HD Y'P'BP'R, G'B'R', and R'G'B' Video

• HV Sync Paths With Adj. Schmitt Trigger

• 2:1 Input MUX

• I2C™ Control of All Functions

• Integrated Low-Pass Filters on ADC Buffers

– 5th Order Butterworth Characteristics

– Selectable Corner Frequencies of 9-MHz,

16-MHz, 35-MHz, and 75-MHz with Bypass (500-MHz)

• Selectable Input Bias Modes:

– AC-Coupled with Sync-Tip Clamp

– AC-Coupled with Bias

– DC-Coupled with Offset Shift

– DC-Coupled

• Monitor Pass-Thru Function:

– Passes the Input Signal With no Filtering

– 500-MHz BW and 1300 V/μs Slew Rate

– 6-dB Gain With SAG Correction Capable

– High Output Impedance in Disable State

• 2.7-V to 5-V Single Supply Operation

• Low 330 mW at 3.3-V Power Consumption

• Disable Function Reduces Current to < 1 μA

• Rail-to-Rail Output:

– Output Swings Within 0.1 V From the Rails

Which Allows AC or DC Output Coupling

• RoHS TQFP Package

APPLICATIONS

• Projectors

• Professional Video Systems

• LCD/DLP/LOCS Input Buffering

DESCRIPTION

Fabricated using the new complementary

silicon-germanium (SiGe) BiCom-III process, the

THS7327 is a low-power, single-supply 2.7-V to 5-V,

3-channel integrated video buffer with H and V Sync

signal paths. It incorporates a selectable 5th order

Butterworth anti-aliasing filter on each channel. The

9-MHz is a perfect choice for SDTV video including

composite, S-Video™, and 480i/576i. The 16-MHz

filter is ideal for EDTV 480p/576p and VGA signals.

The 35-MHz filter is useful for HDTV 720p/1080i and

SVGA signals. The 75-MHz filter is ideal for HDTV

1080p and XGA/SXGA signals. For UXGA/QXGA

R’G’B’ signals, the filter can be bypassed allowing a

500-MHz bandwidth, 1150-V/μs amplifier to buffer the

signal.