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TDA6103 Datasheet(PDF) 6 Page - NXP Semiconductors |
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TDA6103 Datasheet(HTML) 6 Page - NXP Semiconductors |
6 / 16 page March 1994 6 Philips Semiconductors Preliminary specification Triple video output amplifier TDA6103Q Notes 1. See also Fig.6 for the typical low-frequency response of Vi to Voc. 2. The ratio of the change in supply voltage to the change in input voltage when there is no change in output voltage. ts settling time 50% input to (99% < output < 101%) Voc(p-p) = 100 V square wave; f < 1 MHz; tr =tf = 40 ns (pins 1, 2 and 3); see Figs 7 and 8 −− 350 ns SR slew rate between 50Vto(VDD − 50 V); (pins 7, 8 and 9) V1−5 = V2−5 = V3−5 = 2 V square wave (p-p); f < 1 MHz; tr =tf =40ns (pins 1, 2 and 3) − 1600 − V/ µs Ov cathode output voltage overshoot (pins 7, 8 and 9) Voc(p-p) = 100 V square wave; f < 1 MHz; tr =tf = 40 ns (pins 1, 2 and 3); see Figs 7 and 8 − 5 − % SVRR supply voltage rejection ratio f < 50 kHz; note 2 − 70 − dB SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT Cathode output The cathode output is protected against peak currents (caused by positive voltage peaks during high-resistance flash) of 5 A maximum with a charge content of 50 µC. The cathode is also protected against peak currents (caused by positive voltage peaks during low-resistance flash) of 10 A maximum with a charge content of 100 nC. The DC voltage of VDD (pin 6) must be within the operating range of 180 to 210 V during the peak currents. Flashover protection The TDA6103Q incorporates protection diodes against CRT flashover discharges that clamp the cathode output voltage up to a maximum of VDD + Vdiode. To limit the diode current, an external 1.5 k Ω carbon high-voltage resistor in series with the cathode output and a 2 kV spark gap are needed (for this resistor-value, the CRT has to be connected to the main PCB). This addition produces an increase in the rise- and fall times of approximately 5 ns and a decrease in the overshoot of approximately 3%. VDD to GND must be decoupled: 1. With a capacitor >20 nF with good HF behaviour (e.g. foil). This capacitance must be placed as close as possible to pins 6 and 4, but definitely within 5 mm. 2. With a capacitor >10 µF on the picture tube base print. Switch-off behaviour The switch-off behaviour of the TDA6103Q is controllable. This is due to the fact that the output pins of the TDA6103Q are still under control of the input pins for relative low-power supply voltages (approximately 30 V and higher). |
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