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TDA4886A Fiches technique(PDF) 3 Page - NXP Semiconductors |
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TDA4886A Fiches technique(HTML) 3 Page - NXP Semiconductors |
3 / 52 page 1998 Dec 04 3 Philips Semiconductors Product specification 140 MHz video controller with I2C-bus 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 PACKAGE NAME DESCRIPTION VERSION TDA4886A SDIP24 plastic shrink dual in-line package; 24 leads (400 mil) SOT234-1 |
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