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LA7615 Datenblatt(PDF) 2 Page - Sanyo Semicon Device |
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LA7615 Datenblatt(HTML) 2 Page - Sanyo Semicon Device |
2 / 39 page No. 5841-2/39 LA7615 Parameter Symbol Conditions Ratings Unit V2 max 9.6 V Maximum supply voltage V17 max 9.6 V V32 max 9.6 V V60 max 9.6 V Maximum supply current I24 max 30 mA Allowable power dissipation Pd max Ta ≤ 65°C 1.5 W Operating temperature Topr –10 to +65 °C Storage temperature Tstg –55 to +150 °C Specifications Maximum Ratings at Ta = 25°C Parameter Symbol Conditions Ratings Unit V2 7.6 V Recommended supply voltage V17 7.6 V V32 7.6 V V60 7.6 V Recommended supply current I24 24 mA V2 op 7.3 to 7.9 V Operating supply voltage range V17 op 7.3 to 7.9 V V32 op 7.3 to 7.9 V V60 op 7.3 to 7.9 V Operating supply current range I24 op 20 to 30 mA Operating Conditions at Ta = 25°C Functional Description <VIF/SIF Functions> In addition to a PLL synchronous detection system, the IF block also adopts a split system in which the VIF signal and the SIF signal are processed separately. • Low-level VCO The LA7615 achieves a significant reduction in beat generation due to interference by lowering the VCO oscillator level from that used in earlier ICs. • Adjustment-free VCO coil implemented using bus control By compensating for manufacturing variations in the VCO coil using bus control, the LA7615 eliminates coil adjustment from the manufacturing line. • Built-in 4.5 MHz trap The LA7615 incorporates an on-chip trap that also provides a video equalizer function. Thus the number of external trap, inductor, and capacitor components is reduced. • Built-in SIF FM detector: 4.5 MHz quadrature detection • The video signal and FM demodulated signal levels can be controlled from the serial bus. The improved precision associated with controlling the output level over the serial bus makes it easier to design the interface with the following stage. • Built-in buzz canceler Allows high performance to be maintained even during stereo reception. • Built-in video switch (INT/EXT(AUX) switching circuit) Built-in AUX input switching circuit means that the dedicated switching ICs required can be reduced. Also, the ability to control this switch from the serial bus makes it easier to design the peripheral wiring pattern. • Dedicated IF video signal output pin The provision of this pin makes it easier to design end products that support PIP and similar features. <Luminance and Chrominance Circuits> These blocks have been designed to minimize the use of external components as much as possible. The filter circuits are now integrated on the same chip, and not only the adjustment circuits, but also the function selection and characteristics modifications functions can be controlled over the serial bus. As a result, basically all the signal processing from input to output can be performed with only the addition of the chrominance circuit VCO crystal and the APC filter circuit. |
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Ähnliche Beschreibung - LA7615 |
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