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| 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 -20C ~ +70C 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 = 25C) Characteristics Maximum Supply Voltage Maximum Supply Current Operating Voltage Maximum Power Dissipation Storage Temperature Operating Temperature Symbol VCC max lCC max VCC opr PDmax TSTG TOPR Value 13.5 105.0 10.8~13.2 2.5 - 55~+150 - 20~ + 70 Unit V mA V w C C KA2139 ELECTRICAL CHARACTERISTICS VIDEO AMPLIFIER FOR MONITOR (VCC = 12V, TA = 25C, unless otherwise specified) Characteristics Supply Current R,G,B CH Output Voltage 1 R,G,B CH Output Voltage 2 Input Reference Voltage R,G,B Input Bias Current Clamp Gate Low Input Voltage Clamp Gate High Input Voltage Clamp Gate Low Input Current Clamp Gate High Input Current R,G,B Clamp CAP. Charge Current R,G,B Clamp CAP. Discharge Current R,G,B Output Low Voltage R,G,B Output High Voltage Contrast Capacitor Voltage 1 Contrast Capacitor Voltage 2 R,G,B Output DC Offset Low Voltage R,G,B Output DC Offset High Voltage R,G,B Video Amp. Gain 1 Symbol ICC VH 16,20,25 VH 16,20,25 VREF Iin V14L V14H IgateL IgateH Iclamp(+) Iclamp(-) VOL 16,20,25 VOH 16,20,25 Vcon1 Vcon2 VR-GL VR-GH AVmax Test Condition VCC = 12V V24 = 2V V12 = 6V V14 = 0V V14 Variable V14 Variable V14 = 0V V14 = 12V Vclamp cap. = 0V Vclamp cap. = 5V Vclamp = 0V Vclamp = 5V Measure the contrast capacitor voltage V24 = 2V V24 = 4V V12 = 12V, Vin = 0.56 VP.P V12 = 5V V12 = 2V V12 = 12V VIN = 1.0VP.P V12 = 5V V12 = 2V Min 75 1.9 3.9 2.0 0.8 -5.0 0.5 -0.5 8.0 4.8 4.8 -50 -50 13.1 Typ 90.0 2.0 4.0 2.4 5.0 1.2 1.6 -5.0 0.05 0.85 -0.85 1.0 8.5 5.2 5.2 0 0 15.6 Max 105 2.1 4.1 2.8 20.0 2.0 1.0 1.2 -1.2 1.4 5.6 5.6 50 50 18.1 Unit mA V V V A V V A A mA mA V V V V mV mV dB R,G,B Video Amp. Gain 2 R,G,B Video Amp. Gain 3 R,G,B Output Gain Difference 1 R,G,B Output Gain VAR. 1 R,G,B Output Gain VAR. 2 AV5 AV2 AVR-G AVR-G1 AVR-G2 -5 -30 -1.0 -1.0 -3.0 -10.0 -40.0 0 0 0 -1.5 -50 1.0 1.0 3.0 dB dB dB dB dB KA2139 ELECTRICAL CHARACTERISTICS VIDEO AMPLIFIER FOR MONITOR (VCC = 12V, TA = 25C, unless otherwise specified) Characteristics R,G,B Amp. Distortion R,G,B Amp. Banwidth R,G,B Amp. rising time R Amp. Isolation1-100K R Amp. Isolation2-100K G Amp. Isolation1-100K G Amp. Isolation2-100K B Amp. Isolation1-100K B Amp. Isolation2-100K R Amp. Isolation1-100K R Amp. Isolation2-100K G Amp. Isolation1-100K G Amp. Isolation2-100K B Amp. Isolation1-100K B Amp. Isolation2-100K Symbol THD f-3dB Rtr, Gtr, Btr AR1iso100K AR2iso100K AG1iso100K AG2iso100K AB1iso100K AB2iso100K AR1iso100K AR2iso100K AG1iso100K AG2iso100K AB1iso100K AB2iso100K Test Condition V12= 4V V12= 12V V12= 12V Measure the G output level Measure the B output level Measure the R output level Measure the B output level Measure the R output level Measure the G output level Measure the G output level Measure the B output level Measure the R output level Measure the B output level Measure the R output level Measure the G output level Min 50 -40 -40 -40 -40 -40 -40 -25 -25 -25 -25 -25 -25 Typ 0.5 70 5.0 -60 -60 -60 -60 -60 -60 -40 -40 -40 -40 -40 -40 Max 5.0 7.2 - Unit % MHz ns dB dB dB dB dB dB dB dB dB dB dB dB KA2139 TEST CIRCUIT VIDEO AMPLIFIER FOR MONITOR R OUT G OUT B OUT 10K 330 100 0.1F 100 0.1F 330 100 0.1F 330 100 10K A 10K 10K 0.1F 28 27 26 25 24 23 22 21 20 19 18 17 16 15 KA2139 1 A 0.1F VCC 12V 5F 0.1F 0.1F 2 3 4 5 0.1F 6 7 8 9 10 11 12 13 14 0.1F A 0.1F 0.1F A 0.1F 5F 0.1F A A 0.1F + 5F + 50 + 10K 10K 10K 100 RIN BIN 10K 50 5F + 100 47F + 0.1F 50 10K KA2139 APPLICATION CIRCUIT VIDEO AMPLIFIER FOR MONITOR R OUT G OUT B OUT 330 330 330 10K + 1K 0.01F 100 200 100 200 100 200 28 27 26 25 24 23 22 21 20 19 18 17 16 15 0.1F KA2139 1 2 3 4 5 6 7 9 470K 8 10 11 470K 12 13 14 0.1F + 470K 0.1F 0.1F 0.47F + + 0.47F 0.47F 10K 10K 10K + 10F 10K 1K 10K + 10F + 10F + 10F 0.1F 4.7K R INPUT G INPUT B INPUT CLAMP GATE INPUT |
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