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4305-02 Datasheet(PDF) 1 Page - Peregrine Semiconductor Corp. |
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4305-02 Datasheet(HTML) 1 Page - Peregrine Semiconductor Corp. |
1 / 11 page Page 1 of 11 Document No. 70/0159~02C │ www.psemi.com ©2005 Peregrine Semiconductor Corp. All rights reserved. 4x4mm -20 Lead QFN The PE4305 is a high linearity, 5-bit RF Digital Step Attenuator (DSA) covering a 15.5 dB attenuation range in 0.5 dB steps, and is pin compatible with the PE430x series. This 50-ohm RF DSA provides both parallel (latched or direct mode) and serial CMOS control interface, operates on a single 3-volt supply and maintains high attenuation accuracy over frequency and temperature. It also has a unique control interface that allows the user to select an initial attenuation state at power-up. The PE4305 exhibits very low insertion loss and low power consumption. This functionality is delivered in a 4x4 mm QFN footprint. The PE4305 is manufactured in Peregrine’s patented Ultra Thin Silicon (UTSi®) CMOS process, offering the performance of GaAs with the economy and integration of conventional CMOS. Product Specification 50 Ω RF Digital Attenuator 5-bit, 15.5 dB, DC – 4.0 GHz Product Description Figure 1. Functional Schematic Diagram PE4305 Features • Attenuation: 0.5 dB steps to 15.5 dB • Flexible parallel and serial programming interfaces • Latched or direct mode • Unique power-up state selection • Positive CMOS control logic • High attenuation accuracy and linearity over temperature and frequency • Very low power consumption • Single-supply operation • 50 Ω impedance • Pin compatible with PE430x series • Packaged in a 20 Lead 4x4 mm QFN Control Logic Interface Parallel Control Power-Up Control Serial Control RF Input RF Output Switched Attenuator Array 6 3 2 Figure 2. Package Type Table 1. Electrical Specifications @ +25°C, VDD = 3.0 V Notes: 1. Device Linearity will begin to degrade below 1Mhz 2. See Max input rating in Table 2 & Figures on Pages 2 to 4 for data across frequency. 3. Note Absolute Maximum in Table 3. Parameter Test Conditions Frequency Minimum Typical Maximum Units Operation Frequency DC 4000 MHz Insertion Loss2 DC - 2.2 GHz - 1.5 2.25 dB Attenuation Accuracy Any Bit or Bit Combination DC - 2.2 GHz - - ±(0.25 + 3% of atten setting) not to exceed ± 0.4 dB dB 1 dB Compression3 1 MHz - 2.2 GHz 30 34 - dBm Input IP31, 2 Two-tone inputs +18 dBm 1 MHz - 2.2 GHz - 52 - dBm Return Loss DC - 2.2 GHz 15 20 - dB Switching Speed 50% control to 0.5 dB of final value - - 1 µs |
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