TLS1215

WIDE-BAND VIDEO PREAMPLIFIER SYSTEM WITH BLANKING

SLVS096A – OCTOBER 1995

Copyright

1

POST OFFICE BOX 655303

Voltage Range

Voltage Range

Than for Competitive Systems

description

The TLS1215 is a wide-band video preamplifier

system

intended

for

high-resolution

RGB

(red-green-blue) color monitors with blanking

control features. Each video amplifier (R, G, and

B) contains a gain set for adjusting maximum

system gain. The TLS1215 provides digital

level-operated contrast, brightness, and gain adjustment. All the control inputs offer high input impedance and

an operation range from 0 V to 4 V for easy interface to the serial digital buses. The TLS1215 also contains a

blanking circuit, which clamps the video output voltage during blanking period to as low as 0.2 V above ground.

The device operates from a 12-V supply. The TLS1215 is characterized for operation from 0

°C to 70°C.

functional block diagram

CONTRAST CAP1

CONTRAST CAP2

BLANK GATE

CLAMP GATE

CONTRAST

B CLAMP CAP

B GAIN ADJUST

B VIDEO IN

G CLAMP CAP

G GAIN ADJUST

G VIDEO IN

R CLAMP CAP

R GAIN ADJUST

R VIDEO IN

VCC2

R VIDEO OUT

R CLAMP(+)

G VIDEO OUT

G CLAMP(+)

B VIDEO OUT

B CLAMP(+)

VCC1

GND

3, 11, 22, 25

7, 21, 24

17

19

20

27

26

23

16

4

5

28

6

8

18

9

10

15

12

1

2

14

13

A1

A2

A1

A2

A1

A2

Contrast

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.

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2

3

4

5

6

7

8

9

10

11

12

13

14

28

27

26

25

24

23

22

21

20

19

18

17

16

15

CONTRAST CAP1

CONTRAST CAP2

R VIDEO IN

R CLAMP CAP

G VIDEO IN

GND

G CLAMP CAP

B VIDEO IN

B CLAMP CAP

CONTRAST

BLANK GATE

CLAMP GATE

R GAIN ADJUST

R CLAMP(+)

R VIDEO OUT

GND

GND

G VIDEO OUT

G CLAMP(+)

G GAIN ADJUST

B VIDEO OUT

B CLAMP(+)

B GAIN ADJUST

N PACKAGE

(TOP VIEW)

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.