TDA4887PS datasheet(3/68 Pages) PHILIPS

3 / 68 page

2001 Oct 19

Philips Semiconductors

Product speciﬁcation

160 MHz bus-controlled monitor video

preampliﬁer

TDA4887PS

FEATURES

• 160 MHz pixel rate

• 2.7 ns rise time, 3.6 ns fall time

• I2C-bus control

• I2C-bus data buffer for synchronization of adjustments

• 8-bit Digital-to-Analog Converters (DACs)

• 200 ns input clamping pulse

• 4.6 V (p-p) output signal

• Brightness control with grey scale tracking for

user-friendly performance (4 dB more than TDA4885

and TDA4886)

• Brightness control without grey scale tracking for easy

alignment

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

• OSD contrast

• Negative feedback for DC-coupled cathodes

• Especially for AC-coupled cathodes

– Bus controlled black level adaptable to post amplifier

type

– Internal positive feedback

– DAC outputs for black level restoration

• Integrated black level storage capacitors

• Beam current limiting

• Subcontrast/contrast modulation

• Adjustable pedestal blanking

• Sync clipping.

GENERAL DESCRIPTION

The TDA4887PS is a monolithic integrated RGB

preamplifier 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 IC offers brightness control with or without

grey scale tracking for easy alignment. The signals are

amplified to drive commonly used video modules or

discrete solutions. A choice can be made between

individual black level control with negative feedback from

the cathode (DC coupling), or black level control with

positive feedback and three DAC outputs for external

cut-off control (AC coupling).

The circuit can be used with special advantages in

conjunction with the TDA485x monitor deflection IC family.

ORDERING INFORMATION

TYPE NUMBER

PACKAGE

NAME

DESCRIPTION

VERSION

TDA4887PS

SDIP24

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

SOT234-1

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