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4274 Datasheet(PDF) 4 Page - Peregrine Semiconductor Corp. |
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4274 Datasheet(HTML) 4 Page - Peregrine Semiconductor Corp. |
4 / 12 page Preliminary Specification Copyright © Peregrine Semiconductor Corp. 2005 File No. 70/0185-01A │ UltraCMOS™ RFIC Solutions PE4274 Page 4 of 12 Figure 4. Typical Application Block Diagram Table 5. Truth Table VDD C1 C2 RFC – RF1 RFC – RF2 OFF Low Low ON OFF ON Low Low OFF OFF ON Low High OFF ON ON High Low ON OFF ON High High N/A1 N/A1 Notes: 1. The operation of the PE4274 is not supported or characterized in the C1 = High and C2 = High state. The PE4274 provides the high isolation required by FCC part 15.115 regulation between the television antenna and the cable plant. The advantage of the PE4274 is that device isolation / thru performance is maintained when power is removed. This unique feature makes the PE4274 ideal for set-top box and VCR applications. The PE4274 supports signal flow from RFC to RF1 and RF2 termination in the unpowered state; similar to the powered state with C1=High, C2=Low. DTV-Tuner PE4274 SPDT Antenna Input CATV Input 80dB 54 – 216MHz 60dB 216 – 550MHz 55dB 550 – 806MHz DTV-Tuner PE4274 SPDT DTV Tuner Antenna Input CATV Input 80dB 54 – 216MHz 60dB 216 – 550MHz 55dB 550 – 806MHz Power Splitter Power Splitter PE4274 SPDT Dual Tuner DTV / DVR / Set-top Box |
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