TDA4886 Datasheet, PDF (3/52 Pages) NXP Semiconductors – 140 MHz video controller with I2C-bus

Philips Semiconductors
140 MHz video controller with I²C-bus
Product specification
TDA4886
1 FEATURES
• 140 MHz pixel rate
• 3.2 ns rise time, 4 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 TDA4886 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
TDA4886
NAME
SDIP24
PACKAGE
DESCRIPTION
plastic shrink dual in-line package; 24 leads (400 mil)
VERSION
SOT234-1
1998 Nov 11
3