(5 pc) TDA9511, Video Amplifier 7-Pin HEPTAWATT
This listing is for 5 pieces
68,600 TOTAL PIECES IN STOCK. SEND OFFERS FOR LARGER QUANTITIES.
DC COUPLING HIGH VOLTAGE VIDEO AMPLIFIER
BANDWIDTH : 40MHz TYPICAL .
RISE AND FALL TIME : 9ns TYPICAL .
SUPPLY VOLTAGE : 110V .
POWER DISSIPATION : 3.0W .
DESCRIPTION The TDA9511 is a video amplifier designed with a high voltage Bipolar/CMOS/DMOS technology (BCD). It drives in DC coupling mode one cathode of a monitor and is protected against flashovers. It is available in Heptawatt package.
TYPICALAPPLICATION The TDA9511 consists of : - A differential amplifier with active load, - A DMOS output buffer, - Abandgapvoltagereference(Pin 3forfilteringonly).
PC board lay-out The best performances are obtained with a carefully designed HF PC-Board, especially for the output and input capacitors. Thefeedback resistor RF must have a low parasitic capacitor (CF < 0.3pF). This parasitic capacitor CF must be compensated by a capacitor R3 (roughly 20 ⋅ CF) connected in parallel with the input resistor R1. The full bandwidth of the device is only obtained with well matched compensation otherwise the application will have either an integrator response with a low bandwidth or a differentiator response with too much ringing. A diode DP (see Figure 2) has to be connected for flashover protection
Power dissipation The power dissipation consists of a static part and a dynamic part. The static dissipation varies with the output voltage and the feedback resistor. The dynamic power dissipationincreases with the pixel frequency. For a signalfrequencyof 40MHz and 40VPP output signal, the typical power dissipation is about 3.0W, for VDD = 110V. In first approximation, the dynamic dissipation is : PD = VDD * CLOAD * ∆VOUT * f and the total dissipation is : P=VDD * CLOAD * ∆VOUT *f+VDD * IDD + VCC * ICC - (VDD - VOUT _____ ) VOUT _____ RFEEDBACK with f = pixel frequency P = 110V x 10pF x 40V x 40MHz + 110V x 7mA +12 x 20mA - 602 V/20kΩ = 2.95W
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