5

8

7

6

GND

CH.2IN

CH.3IN

CH.1IN

CH.3OUT

CH.2OUT

CH.1OUT

DAC/

Encoder

(THS8200)

1

2

3

4

CVBS

Y’

C’

CVBS

Out

75 W

Y’

Out

75 W

C’

Out

75 W

3.3V

3.3V

75 W

75 W

SDTV

CVBS

S-Video Y’

S-VideoC’

480i/576i

Y’P’ P’

G’B’R’

B

R

75 W

S-Video

R

R

R

THS7314

THS7314

www.ti.com

SLOS513A

– DECEMBER 2006 – REVISED MARCH 2011

Check for Samples: THS7314

1

FEATURES

DESCRIPTION

•

3 SDTV Video Amplifiers for CVBS, S-Video,

Fabricated

using

the

Silicon-Germanium

(SiGe)

BiCom-III process, the THS7314 is a low power

•

Integrated Low-Pass Filters

single-supply 3-V to 5-V 3-channel integrated video

buffer. It incorporates a 5th-order Butterworth filter

– –1dB Passband Bandwidth at 7-MHz

which is useful as a DAC reconstruction filter or an

– 47dB Attenuation at 27-MHz

ADC anti-aliasing filter. The 8.5-MHz filter is a perfect

choice for SDTV video which includes Composite

•

Versatile Input Biasing

(CVBS), S-Video, Y

– DC-Coupled With 285-mV Output Shift

480i/576i.

– AC-Coupled with Sync-Tip Clamp

As part of the THS7314 flexibility, the input can be

– Allows AC-Coupled With DC-Biasing

configured for ac or dc coupled inputs. The 285-mV

•

Built-in 6dB Gain (2V/V)

output level shift to allow for a full sync dynamic

range at the output with 0-V input. The AC coupled

•

3-V to 5-V Single Supply Operation

modes include a transparent sync-tip clamp option for

•

Rail-to-Rail Output:

CVBS, Y

', and G'B'R' signals with sync. AC-coupled

– Output Swings Within 100-mV From the

biasing for C

an external resistor to Vs+.

Rails Allowing AC or DC Output Coupling

– Able to Drive up to 2 Video Lines – 75 Ω

The THS7314 is the perfect choice for all output

buffer applications. Its rail-to-rail output stage with

•

Low 16-mA at 3.3-V Total Quiscent Current

6-dB gain allows for both ac and dc line driving. The

•

Low Differential Gain/Phase of 0.1% / 0.1

°

ability to drive 2-lines, or 75-

Ω loads, allows for

•

SOIC-8 Package

maximum flexibility as a video line driver. The 16-mA

total quiescent current at 3.3-V makes it an excellent

APPLICATIONS

choice for USB powered, portable, or other power

sensitive video applications.

•

Set Top Box Output Video Buffering

•

PVR/DVDR Output Buffering

The THS7314 is available in a small SOIC-8 package

•

USB/Portable Low Power Video Buffering

that is RoHS compliant.

Figure 1. 3.3-V Single-Supply DC-Input/DC Output Coupled Video Line Driver

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

© 2006–2011, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.