DatasheetsPDF.com

KA2139

Samsung
Part Number KA2139
Manufacturer Samsung
Description 3 CHANNEL R.G.B VIDEO AMPLIFIER
Published Apr 25, 2005
Detailed Description KA2139 3 CHANNEL R.G.B VIDEO AMPLIFIER VIDEO AMPLIFIER FOR MONITOR 28-DIP-600A The KA2l39 is a monolithic integrated c...
Datasheet PDF File KA2139 PDF File

KA2139
KA2139

Overview
KA2139 3 CHANNEL R.
G.
B VIDEO AMPLIFIER VIDEO AMPLIFIER FOR MONITOR 28-DIP-600A The KA2l39 is a monolithic integrated circuit for processing the R,G,B video in high resolution CRT display.
It contains 3 channel video amplifier, black level clamp comparator for brightness control and DC control attenuator for contrast control, this device is suitable for monitor.
FUNCTIONS • R.
G.
B amplifier • Contrast control • Clamp & brIghtness circuit • Vref.
circuit FEATURES • 3 Channel R.
G.
B video amplifier (f.
-3DB =7OMHz:Typ) • Superior linearity contrast control ORDERING INFORMATION • Black level clamp comparator for Device Package Operating Temperature brightness control • Built-in clamp gate circuit to operate the KA2139 28 DIP -20°C ~ +70°C clamp comparator at black level • Vref 2.
4V bandgap circuit BLOCK DIAGRAM 28 27 26 25 24 23 22 21 20 19 18 17 16 15 A2 A2 A2 A1 + RED gm GREEN A1 + - gm BLUE A1 + - gm CONTRAST CONTROL Vref 2.
4V 1.
4 V 1 2 3 4 5 6 7 8 9 10 11 12 13 14 KA2139 PIN DESCRIPTION No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Symbol VCC1 CONCAP1 CONCAP2 RIN RCAP GIN GND GCAP BIN BCAP VREF CON VCC1 GATEIN Description Power supply 1 Contrast capacitor 1 Contrast capacitor 2 R channel input R-CH comparator cap.
G channel input Ground G-CH comparator cap.
B channel input B-CH comparator cap.
R,G,B amp.
offset voltage Contrast control Power supply 1 Clamp gate input VIDEO AMPLIFIER FOR MONITOR No 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Symbol BCLAMP(+) BOUT BCLAMP(-) BDREVE GCLAMP(+) GOUT GCLAMP(-) GDRIVE VCC2 RCLAMP(+) ROUT RCLAMP(-) RDRIVE VCC1 Description B brightness control B channel output B-CH clamp feedback B-CH drive output G brightness control G channel output G-CH clamp feedback G-CH drive output Power supply 2 R brightness control R channel output R-CH clamp feedback R-CH drive output Power supply 1 ABSOLUTE MAXIMUM RATINGS (TA = 25 °C) Characteristics Maximum Supply Voltage Maximum Supply Current Operating Voltage Maximum Pow...


Similar Datasheet


@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site. (Privacy Policy & Contact)