KA2139 VIDEO AMPLIFIER FOR MONITOR 3 CHANNEL R.G.B VIDEO AMPLIFIER 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 A2 A1 + - 21 20 A2 gm RED A1 + - 19 18 17 2 3 gm A1 + - gm CONTRAST CONTROL BLUE GREEN 4 5 6 7 15 A2 1.4 V Vref 2.4V 1 16 8 9 10 11 12 13 14 KA2139 VIDEO AMPLIFIER FOR MONITOR PIN DESCRIPTION No Symbol Description No Symbol 1 2 3 4 5 6 7 8 9 10 11 12 13 14 VCC1 CONCAP1 CONCAP2 RIN RCAP GIN GND GCAP BIN BCAP VREF CON VCC1 GATEIN 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 15 16 17 18 19 20 21 22 23 24 25 26 27 28 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 Power Dissipation Storage Temperature Operating Temperature Symbol Value Unit VCC max lCC max VCC opr PDmax TSTG TOPR 13.5 105.0 10.8~13.2 2.5 - 55~+150 - 20~ + 70 V mA V w °C °C KA2139 VIDEO AMPLIFIER FOR MONITOR ELECTRICAL CHARACTERISTICS (VCC = 12V, TA = 25°C, unless otherwise specified) Characteristics Symbol 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 Test Condition Min Typ Max Unit ICC VH 16,20,25 VH 16,20,25 VREF Iin V14L V14H IgateL IgateH VCC = 12V V24 = 2V V12 = 6V V14 = 0V V14 Variable V14 Variable V14 = 0V V14 = 12V 75 1.9 3.9 2.0 0.8 -5.0 - 90.0 2.0 4.0 2.4 5.0 1.2 1.6 -5.0 0.05 105 2.1 4.1 2.8 20.0 2.0 1.0 mA V V V µA V V µA µA Iclamp(+) Vclamp cap. = 0V 0.5 0.85 1.2 mA Iclamp(-) Vclamp cap. = 5V -0.5 -0.85 -1.2 mA VOL 16,20,25 VOH 16,20,25 Vcon1 8.0 4.8 1.0 8.5 5.2 1.4 5.6 V V V Vcon2 Vclamp = 0V Vclamp = 5V Measure the contrast capacitor voltage 4.8 5.2 5.6 V ∆VR-GL V24 = 2V -50 0 50 mV ∆VR-GH V24 = 4V -50 0 50 mV AVmax V12 = 12V, Vin = 0.56 VP.P V12 = 5V V12 = 2V V12 = 12V VIN = 1.0VP.P V12 = 5V V12 = 2V 13.1 15.6 18.1 dB -5 -30 -1.0 -10.0 -40.0 0 -1.5 -50 1.0 dB dB dB -1.0 -3.0 0 0 1.0 3.0 dB dB R,G,B Video Amp. Gain 2 R,G,B Video Amp. Gain 3 R,G,B Output Gain Difference 1 ∆AV5 ∆AV2 ∆AVR-G R,G,B Output Gain VAR. 1 R,G,B Output Gain VAR. 2 ∆AVR-G1 ∆AVR-G2 KA2139 VIDEO AMPLIFIER FOR MONITOR ELECTRICAL CHARACTERISTICS (VCC = 12V, TA = 25°C, unless otherwise specified) Characteristics Symbol Test Condition Min Typ Max Unit 50 -40 0.5 70 5.0 -60 5.0 7.2 - % MHz ns dB -40 -60 - dB R,G,B Amp. Distortion R,G,B Amp. Banwidth R,G,B Amp. rising time R Amp. Isolation1-100K THD f-3dB Rtr, Gtr, Btr AR1iso100K R Amp. Isolation2-100K AR2iso100K V12= 4V V12= 12V V12= 12V Measure the G output level Measure the B output level G Amp. Isolation1-100K AG1iso100K Measure the R output level -40 -60 - dB G Amp. Isolation2-100K AG2iso100K Measure the B output level -40 -60 - dB B Amp. Isolation1-100K AB1iso100K Measure the R output level -40 -60 - dB B Amp. Isolation2-100K AB2iso100K Measure the G output level -40 -60 - dB R Amp. Isolation1-100K AR1iso100K Measure the G output level -25 -40 - dB R Amp. Isolation2-100K AR2iso100K Measure the B output level -25 -40 - dB G Amp. Isolation1-100K AG1iso100K Measure the R output level -25 -40 - dB G Amp. Isolation2-100K AG2iso100K Measure the B output level -25 -40 - dB B Amp. Isolation1-100K AB1iso100K Measure the R output level -25 -40 - dB B Amp. Isolation2-100K AB2iso100K Measure the G output level -25 -40 - dB KA2139 VIDEO AMPLIFIER FOR MONITOR TEST CIRCUIT R OUT G OUT 10KΩ 100Ω 100Ω 330Ω 0.1µF 100Ω 330Ω 0.1µF 100Ω 0.1µF 330Ω 0.1µF A 10KΩ 28 B OUT 27 26 10KΩ 25 24 23 22 21 10KΩ 20 19 18 17 16 15 9 10 11 12 13 14 KA2139 2 1 4 3 6 5 7 8 0.1µF 0.1µF A 0.1µF 0.1µF A 0.1µF V CC 12V A 0.1µF 5µF + 5µF 0.1µF A 0.1µF 0.1µF + A 0.1µF 5µF + 10KΩ 50Ω RIN 47µF + BIN 10KΩ 0.1µF 50Ω 10KΩ 50Ω 5µF 10KΩ + 100Ω 10KΩ 100Ω KA2139 VIDEO AMPLIFIER FOR MONITOR APPLICATION CIRCUIT R OUT B OUT G OUT 330 330 330 10K + 1K 0.01µF 100 28 27 26 200 100 200 25 24 23 22 21 100 20 19 9 10 200 18 17 16 15 11 12 13 14 0.1µF KA2139 1 2 3 4 5 7 6 8 470K + 470K 0.1µF 0.1µF 470K + 0.1µF + 0.47µF 0.47µF 0.47µF 10K 10K 10K + 10K 10µF + + 10µF R INPUT 10µF + 10µF G INPUT B INPUT 0.1µF 10K 4.7K 1K CLAMP GATE INPUT