THS7374

1

FEATURES

DESCRIPTION

APPLICATIONS

75 W

Y'/G'Out

CVBS/Sync

CVBS

+3.3V

R

Y'/G'

R

P’ /B'

B

R

P’ /R'

R

R

1

2

3

4

5

6

7

14

13

12

11

10

9

8

CH1OUT

CH2OUT

CH3OUT

CH4OUT

V

S+

BYPASS

NC

CH1IN

CH2IN

CH3IN

CH4IN

GND

DISABLE

NC

THS7374

ToGPIOController

orGND

75 W

75 W

P' /B'Out

B

75 W

75 W

P' /R'Out

R

75 W

75 W

75 W

+3Vto+5V

DAC/Encoder

SDTV

CVBS

S-Video

Y'P’ P'

R'G'B’

B

R

THS7374

4-Channel SDTV Video Amplifier with 6th-Order Filters and 6-dB Gain

2

• 4-SDTV Video Amplifiers for CVBS, S-Video,

Fabricated using the revolutionary complementary

Silicon-Germanium (SiGe) BiCom3X process, the

THS7374 is a low-power, single-supply 3 V to 5 V

• Integrated Low-Pass Filters:

four-channel integrated video buffer. It incorporates a

–

6th-Order 9.5-MHz (–3dB) Butterworth

sixth-order Butterworth filter (able to be bypassed)

–

–1 dB Passband Bandwidth at 8.2-MHz

which is useful as a digital-to-analog converter (DAC)

reconstruction filter or an analog-to-digital converter

–

54-dB Attenuation at 27-MHz

(ADC) anti-aliasing filter. The 9.5-MHz filter is a

• 150-MHz (-3dB) Filter Bypass Mode

perfect

choice

for

SDTV

video

that

includes

• Versatile Input Biasing

composite (CVBS), s-video, Y'U'V', G'B'R' (R'G'B'),

–

DC-Coupled with 300-mV Output Shift

–

AC-Coupled with Sync-Tip Clamp

As part of the THS7374 flexibility, the input can be

configured for either ac or dc-coupled inputs. The

–

AC-Coupled with Biasing Allowed

300-mV output level shift allows for a full sync

• Built-in 6-dB Gain (2 V/V)

dynamic range at the output with 0-V input. The

• +3-V to +5-V Single-Supply Operation

ac-coupled modes include a transparent sync-tip

clamp option for CVBS, Y', and G'B'R' signals with

• Rail-to-Rail Output:

–

Output Swings Within 100 mV from the

easily be achieved by adding an external resistor.

Rails to Allow AC or DC Output Coupling

The THS7374 is the perfect choice for all video buffer

–

Supports Driving 2 Lines per Channel

applications. Its rail-to-rail output stage with 6-dB gain

• Low 9.6-mA at 3.3-V Total Quiescent Current

allows for both ac and dc line driving. The ability to

• 0.1-µA Disabled Supply Current Function

drive two lines per channel, or 75-

Ω loads, allows for

maximum flexibility as a video line driver. The 9.6-mA

• Low Differential Gain/Phase of 0.15%/0.3°

total quiescent current at 3.3 V and 0.1-

µA disabled

• Lead-Free and Green TSSOP-14 Package

current makes it an excellent choice for portable or

other power-sensitive applications.

The THS7374 is available in a TSSOP-14 package

• Low-Cost SCART Systems

that is lead-free and green (RoHS) compliant.

• Set Top Box Output Video Buffering

• Surveillance Systems

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.

2

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 2008, 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.