Wide Bandwidth . . . Typ 100 MHz at −3 dB

Three Channels

0 V to 4 V, Digital Level-Contrast Control

0 V to 4 V, Digital Level-Gain Adjust Control

20-Pin Plastic DIP for Small PCB Area

Required

Fewer Peripheral Components Required

Than for LM1203 Applications

Independent CLAMP(+) Adjustment to Each

Channel

description

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 (AV = 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.