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TDA4886A

140 MHz video controller with I2C-bus

Philips Electronics 

Philips Semiconductors

140 MHz video controller with I2C-bus

Product specification

TDA4886A

1 FEATURES

• 140 MHz pixel rate

• 2.8 ns rise time, 3.8 ns fall time

• I2C-bus control

• I2C-bus data buffer for synchronization of adjustments

• Grey scale tracking

• On Screen Display (OSD) mixing with 50 MHz pixel rate

• OSD contrast

• Negative feedback for DC-coupled cathodes

• Especially for AC-coupled cathodes

– Black level adaptable to kind of post amplifier

– Internal positive feedback

– DAC outputs for black level restoration.

• Integrated black level storage capacitors

• Beam current limiting

• Subcontrast/contrast modulation

• Pedestal blanking

• Sync clipping.

2 GENERAL DESCRIPTION

The TDA4886A is a monolithic integrated RGB

pre-amplifier for colour monitor systems (e.g. 15" and 17")

with I2C-bus control and OSD. In addition to bus control,

beam current limiting and contrast modulation are

possible. The signals are amplified in order to drive

commonly used video modules or discrete solutions.

Individual black level control with negative feedback from

the cathode (DC coupling) or gradually adaptable black

level control with positive feedback and 3 DAC outputs for

external cut-off control (AC coupling) is possible.

With special advantages the circuit can be used in

conjunction with the TDA485X monitor deflection IC

family.

3 ORDERING INFORMATION

TYPE

NUMBER

TDA4886A

NAME

SDIP24

PACKAGE

DESCRIPTION

plastic shrink dual in-line package; 24 leads (400 mil)

VERSION

SOT234-1

1998 Dec 04

3

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