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TDA4884 Datasheet(PDF) 3 Page - NXP Semiconductors |
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TDA4884 Datasheet(HTML) 3 Page - NXP Semiconductors |
3 / 28 page 1997 Nov 26 3 Philips Semiconductors Product specification Three gain control video pre-amplifier for OSD TDA4884 1 FEATURES • 85 MHz video controller • Fully DC controllable • 3 separate video channels • Input black-level clamping • White level adjustment for 3 channels • Contrast control for all 3 channels simultaneously • Cathode feedback to internal reference for cut-off control, which allows unstabilized video supply voltage • Current outputs for RGB signal currents • RGB voltage outputs to external peaking circuits • Blanking and switch-off input for screen protection • Sync on green operation possible • On Screen Display (OSD) facility. 2 GENERAL DESCRIPTION The TDA4884 is an RGB pre-amplifier for colour monitor systems with SVGA performance, intended for DC or AC coupling of the colour signals to the cathodes of the CRT. With special advantages the circuit can be used in conjunction with the TDA485x monitor deflection IC family. 3 QUICK REFERENCE DATA 4 ORDERING INFORMATION SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT VP positive supply voltage 7.2 8.0 8.8 V IP supply current 36 48 60 mA Vi(b-w) input voltage (black-to-white; pins 2, 5 and 8) − 0.7 1.0 V Vo(b-w) output voltage (black-to-white; pins 19, 16 and 13) nominal contrast; pins 3, 1 and 11 open-circuit − 0.79 − V Io(b-w) output current (black-to-white; pins 20, 17 and 14) − 50 − mA with peaking −− 100 mA B bandwidth −3dB 70 85 − MHz Gnom nominal gain (pins 2, 5 and 8 to pins 19, 16 and 13) nominal contrast; pins 3, 1 and 11 open-circuit − 1 − dB ∆G gain control difference for all channels relative to Gnom −5 − +2.6 dB CRcontrast contrast control Vi(CC) = 1 to 6 V −22 − +3.4 dB COSD(min) minimum contrast for OSD Vi(CC) = 0.7 V −−40 − dB Tamb operating ambient temperature −20 − +70 °C TYPE NUMBER PACKAGE NAME DESCRIPTION VERSION TDA4884 DIP20 plastic dual in-line package; 20 leads (300 mil) SOT146-1 |
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