STV5112 Datasheet | SGS-THOMSON

RGB HIGH VOLTAGE VIDEO AMPLIFIER - . BANDWIDTH : 8MHz TYPICAL SUPPLY VOLTAGE : 220V TYPICAL RISE AND FALL TIME : 50ns TYPICAL CRT CATHODE CURRENT OUTPUTS FOR PARALLEL OR SEQUENTIAL CUT-OFF OR DRIVE ADJUSTMENT FLASHOVER PROTECTION POWER DISSIPATION : 3.6W DESCRIPTION The STV5112 includes three video amplifiers designed with a h igh voltage b ipolar/CMOS/DMOS technology (BCD). It drives directly the three cathodes and is protected against flashovers. Thanks to its three cathode current outputs, the STV5112 can be used with both parallel and sequential sampling applications. PIN CONNECTIONS (top view) MULTIWATT 15 (Plastic Package) ORDER CODE : STV5112 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 BLUE FEEDBACK BLUE CATHODE CURRENT BLUE OUTPUT GREEN FEEDBACK GREEN CATHODE CURRENT GREEN OUTPUT RED FEEDBACK GROUND RED OUTPUT RED CATHODE CURRENT V DD HIGH VOLTAGE RED INPUT GREEN INPUT V CC LOW VOLTAGE BLUE INPUT Tab connected to Pin 8 5112-01.EPS April 1998 1/5 http://.. PIN FUNCTION N° 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Function Blue Input VCC Green Input Red Input VDD Red Cathode Current Red Output Ground Red Feedback Green Output Green Cathode Current Green Feedback Blue Output Blue Cathode Current Blue Feedback Description Input of the “blue” amplifier. It is a virtual ground with 2.5V bias voltage and 75µA input bias current. Low voltage power supply, typically 9V. Input of the “green” amplifier. It is a virtual ground with 2.5V bias voltage and 75µA input bias current. Input of the “red” amplifier. It is a virtual ground with 2.5V bias voltage and 75µA input bias current. High voltage power supply, typically 220V. Provides the video processor with a copy of the DC current flowing into the red cathode, for automatic cut-off or gain adjustment. If this control is not used, Pin 6 must be grounded. Output driving the red cathode. Pin 7 is internally protected against CRT arc discharges by a diode limiting the output voltage...