2SD2648

      The 2SD2648 is a NPN Triple Diffused Planar Silicon Transistor designed for Color TV Horizontal Deflection Output Applications.The 2SD2648 has 4 features including High speed;High breakdown voltage(VCBO=1500V);High reliability(Adoption of HVP process);Adoption of MBIT process.
      The absolute maximun ratings of the 2SD2648 are at Ta=25°C, Collector-to-Base Voltage VCBO is 1500V;Collector-to-Emitter Voltage VCEO is 700V;Emitter-to-Base Voltage VEBO is 5 V;Collector Current IC(DC) is 15A;collector dissipation is 85W;Junction temperature is 150°C maxnimum;Storage temperature is -55 to +150°C.
      The 2SD2648 is a monolithically integrated Digital Audio Broadcasting one-chip front end circuit manufactured using Atmels advanced UHF5S technology. Its functionality covers a gain-controlled RF amplifier with two selectable RF inputs, a gain-controlled RF mixer, a VCO which provides the LO signal for the RF mixers, either directly or after passing a frequency divider, a SAW filter driver, an AGC block for the RF section, a gain-controlled IF amplifier, an IF mixer which can also be bypassed, an AGC block for the IF section and a fractional-N frequency synthesizer. The frequency synthesizer controls the VCO to synthesize frequencies in the range of 70 MHz to 500 MHz in a 16-kHz raster; within certain limits the reference divider factor is fully programmable. The lock status of the phase detector is indicated at a special output pin; three switch- ing outputs can be addressed. A reference signal which is generated by an on-chip reference oscillator is available at an output pin. This reference signal is also used to generate the LO signal for the IF mixer, either by doubling the frequency or by using the reference frequency itself. Three D/A converters at a resolution of 8 bits provide a digitally controllable output voltage. The thresholds inside the AGC blocks can be digi- tally controlled by means of on-chip 4-bit D/A converters. All functions of this IC are controlled via a simple two-wire bus.
      The 2SD2648 supports temporal add-in functions on PC Cards, such as Memory cards, Network interfaces, FAX/Modems and other wireless communication cards, etc. The high performance and capability of the CardBus interface will enable further development of many new functions and applications.
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