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4257-00 Datasheet(PDF) 1 Page - Peregrine Semiconductor Corp. |
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4257-00 Datasheet(HTML) 1 Page - Peregrine Semiconductor Corp. |
1 / 7 page Page 1 of 7 ©2004-2009 Peregrine Semiconductor Corp. All rights reserved. Document No. 70-0166-06 │ www.psemi.com 20-Lead 4x4 mm QFN The PE4257 is a high-isolation UltraCMOS™ Switch designed for wireless applications, covering a broad frequency range from near DC up to 3000 MHz. This single-supply SPDT switch integrates a two-pin CMOS control interface. It also provides low insertion loss with extremely low bias requirements while operating on a single 3-volt supply. In a typical wireless application, the PE4257 provides unprecedented isolation and integration. The PE4257 is manufactured on Peregrine’s UltraCMOS™ process, a patented variation of silicon-on-insulator (SOI) technology on a sapphire substrate, offering the performance of GaAs with the economy and integration of conventional CMOS. Product Specification 50 Ω SPDT Absorptive UltraCMOS™ DC – 3.0 GHz RF Switch Product Description Figure 1. Functional Diagram PE4257 Features • 50 Ω characteristic impedance • Integrated 50 Ω 0.25 watt terminations • High input IP3 > +55 dBm • High isolation 64 dB at 1000 MHz • Low insertion loss: typically 0.75 dB at 1000 MHz and 0.95 dB at 2000 MHz • LV CMOS two-pin control • Single +3 volt supply operation • Low current consumption: 8 µA Parameter Condition Minimum Typical Maximum Units Operating Frequency1 DC 3000 MHz Insertion Loss 1000 MHz 2000 MHz 3000 MHz 0.75 0.95 1.2 0.95 1.15 1.4 dB Isolation Input to Output 1000 MHz 2000 MHz 3000 MHz 61 46 40 64 50 44 dB Isolation Output to Output 1000 MHz 2000 MHz 3000 MHz 57 54 42 63 60 48 dB Input IP2 5 MHz - 1000 MHz 80 dBm Input IP3 5 MHz - 1000 MHz 50 55 dBm Input 1dB Compression2 1000 MHz 29 31 dBm Switching Time 50% CTRL to 10 / 90 RF 2 µs Video Feedthrough3 5 MHz - 1000 MHz 15 mVpp Notes: 1. Device linearity will begin to degrade below 5 MHz. 2. Note Absolute Maximum ratings in Table 3. 3. Measured with a 1 ns risetime, 0/3 V pulse and 500 MHz bandwidth Figure 2. Package Type Table 1. Electrical Specifications @ +25 °C, VDD = 3.0 V (ZS = ZL = 50 Ω) RF1 RF2 50 Ω 50 Ω CMOS Control Driver ESD ESD 50 Ω RFC CTRL CTRL2 |
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