TLS1233 Datasheet, PDF (1/7 Pages) Texas Instruments – VIDEO PREAMPLIFIER SYSTEM

TLS1233
VIDEO PREAMPLIFIER SYSTEM
D Wide Bandwidth . . . Typ 100 MHz at – 3 dB
D Three Channels
D 0 V to 4 V, Digital Level-Contrast Control
D 0 V to 4 V, Digital Level-Gain Adjust Control
D 20-Pin Plastic DIP for Small PCB Area
Required
D Fewer Peripheral Components Required
Than for LM1203 Applications
D Independent CLAMP(+) Adjustment to Each
Channel
description
SLVS126C – JULY 1995 – REVISED JUNE 1996
N PACKAGE
(TOP VIEW)
R CLAMP(+) 1
V_CC1 2
R VIDEO IN 3
R CLAMP CAP 4
G VIDEO IN 5
GND 6
G CLAMP CAP 7
B VIDEO IN 8
B CLAMP CAP 9
CONTRAST ¹⁰
20 G CLAMP(+)
19 B CLAMP(+)
18 R VIDEO OUT
17 R GAIN ADJUST
16 V_CC2
15 G VIDEO OUT
14 G GAIN ADJUST
13 B VIDEO OUT
12 B GAIN ADJUST
11 _{CLAMP GATE}
The TLS1233 is a 100-MHz wide-band video preamplifier system intended for mid-to-high-resolution RGB
(red-green-blue) color monitors. Each video amplifier (R, G, and B) contains a gain set for adjusting maximum
system gain (A_V = 7.8 V/V). The TLS1233 provides digital level-operated contrast, brightness, and gain
adjustment control. 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. Provided in a 20-pin plastic dual-in-line package (DIP), the TLS1233
integrates most of the external components required to accommodate the video system.
The TLS1233 operates from a 12-V supply and contains an internal input bias voltage. Also, the TLS1233
contains the feedback resistor required between output and CLAMP(–) for dc level holding. The device is
characterized for operation from 0°C to 70°C.
functional block diagram
R VIDEO IN ³
A1
R CLAMP CAP ⁴
A2
R GAIN ADJUST ¹⁷
G VIDEO IN ⁵
A1
G CLAMP CAP ⁷
A2
G GAIN ADJUST ¹⁴
B VIDEO IN ⁸
A1
B CLAMP CAP ⁹
A2
B GAIN ADJUST ¹²
CONTRAST
10
Contrast
Control
CLAMP GATE ¹¹
16 _VCC2
18 _{R VIDEO OUT}
1 _{R CLAMP(+)}
15 _{G VIDEO OUT}
20 _{G CLAMP(+)}
13 _{B VIDEO OUT}
19 _{B CLAMP(+)}
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 © 1996, Texas Instruments Incorporated
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