TLS1215 Datasheet, PDF (1/6 Pages) Texas Instruments – WIDE-BAND VIDEO PREAMPLIFIER SYSTEM WITH BLANKING

TLS1215
WIDE-BAND VIDEO PREAMPLIFIER SYSTEM WITH BLANKING
SLVS096A – OCTOBER 1995
• Wide Bandwidth . . . Typ 100 MHz at – 3 dB
• 0-V to 4-V Digital Level-Contrast Control
N PACKAGE
(TOP VIEW)
Voltage Range
• 0-V to 4-V Digital Level-Gain Adjust Control
Voltage Range
• Individual Gain Adjust for Video Amplifiers
• Output-Stage Blanking
• Fewer Peripheral Components Required
Than for Competitive Systems
description
CONTRAST CAP1 ₁
CONTRAST CAP2 ₂
V_{CC1 3}
R VIDEO IN 4
R CLAMP CAP 5
G VIDEO IN 6
GND 7
G CLAMP CAP 8
B VIDEO IN 9
28 ^{R GAIN ADJUST}
27 ^{R CLAMP(+)}
26 ^{R VIDEO OUT}
25 V_CC1
24 GND
23 V_CC2
22 V_CC1
21 GND
20 G VIDEO OUT
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
B CLAMP CAP 10
V_CC1 11
CONTRAST 12
BLANK GATE 13
CLAMP GATE 14
19 G CLAMP(+)
18 G GAIN ADJUST
17 B VIDEO OUT
16 B CLAMP(+)
15 B GAIN ADJUST
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
R VIDEO IN ⁴ A1
A2
5
R CLAMP CAP
R GAIN ADJUST ²⁸
23 _VCC2
26 _{R VIDEO OUT}
G VIDEO IN ⁶ A1
8
A2
G CLAMP CAP
G GAIN ADJUST ¹⁸
27
R CLAMP(+)
20 _{G VIDEO OUT}
B VIDEO IN ⁹
A1
10
A2
B CLAMP CAP
B GAIN ADJUST ¹⁵
CONTRAST ¹²
CONTRAST CAP1 ¹
CONTRAST CAP2 ²
CLAMP GATE ¹⁴
BLANK GATE ¹³
Contrast
19 _{G CLAMP(+)}
17 _{B VIDEO OUT}
16
B CLAMP(+)
3, 11, 22, 25 _VCC1
7, 21, 24 _GND
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.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
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Copyright © 1995, Texas Instruments Incorporated
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