Product Specification PE4302 50 RF Digital Attenuator 6-bit, 31.5 dB, DC 4.0 GHz Product Description Features The PE4302 is a high linearity, 6-bit RF Digital Step Attenuator Attenuation: 0.5 dB steps to 31.5 dB (DSA) covering a 31.5 dB attenuation range in 0.5 dB steps. This 50-ohm RF DSA provides both parallel and serial CMOS Flexible parallel and serial programming control interface operates on a single 3-volt supply and interfaces maintains high attenuation accuracy over frequency and Unique power-up state selection temperature. It also has a unique control interface that allows Positive CMOS control logic the user to select an initial attenuation state at power-up. The PE4302 exhibits very low insertion loss and low power High attenuation accuracy and linearity consumption. This functionality is delivered in a 4x4 mm QFN over temperature and frequency footprint. Very low power consumption The PE4302 is manufactured on Peregrines UltraCMOS Single-supply operation process, a patented variation of silicon-on-insulator (SOI) 50 impedance technology on a sapphire substrate, offering the performance Packaged in a 20 lead 4x4mm QFN of GaAs with the economy and integration of conventional CMOS. Figure 1. Functional Schematic Diagram Figure 2. Package Type 4x4 mm 20-Lead QFN Switched Attenuator Array RF Input RF Output 6 Parallel Control Control Logic Interface 3 Serial Control 2 Power-Up Control Table 1. Electrical Specifications +25C, V = 3.0 V DD Parameter Test Conditions Frequency Minimum Typical Maximum Units Operation Frequency DC 4000 MHz 2 Insertion Loss DC - 2.2 GHz - 1.5 1.75 dB Any Bit or Bit DC 1.0 GHz (0.10 + 3% of atten setting) dB Attenuation Accuracy - - Combination 1.0 < 2.2 GHz (0.15 + 5% of atten setting) dB 3 1 dB Compression 1 MHz - 2.2 GHz 30 34 - dBm Two-tone inputs 1,2 Input IP3 1 MHz - 2.2 GHz - 52 - dBm +18 dBm Return Loss DC - 2.2 GHz 15 20 - dB 50% control to 0.5 dB Switching Speed - - 1 s of final value Notes: 1. Device Linearity will begin to degrade below 1 Mhz 2. See Max input rating in Table 3 & Figures on Pages 2 to 4 for data across frequency. 3. Note Absolute Maximum in Table 3. Document No. 70-0056-04 www.psemi.com 2003-2008 Peregrine Semiconductor Corp. All rights reserved. Page 1 of 11 Logo updated under non-rev change. Peregrine products are protected under one or more of the following U.S. Patents: PE4302 Product Specification Typical Performance Data 25C, V = 3.0 V DD Figure 3. Insertion Loss Figure 4. Attenuation at Major steps 0 35 31.5dB 30 -1 25 -2 -40C 20 25C 85C -3 16dB 15 2dB -4 1dB 0.5dB 10 8dB -5 4dB 5 -6 0 0 500 1000 1500 2000 2500 3000 3500 4000 0 500 1000 1500 2000 2500 3000 3500 4000 RF Frequency (MHz) RF Frequency (MHz) Figure 5. Input Return Loss at Major Figure 6. Output Return Loss at Major Attenuation Steps Attenuation Steps 0 0 -10 -10 -20 -20 16dB -30 -30 31.5dB 31.5dB -40 -40 -50 -50 0 500 1000 1500 2000 2500 3000 3500 4000 0 500 1000 1500 2000 2500 3000 3500 4000 RF Frequency (MHz) RF Frequency (MHz) 2003-2008 Peregrine Semiconductor Corp. All rights reserved. Document No. 70-0056-04 UltraCMOS RFIC Solutions Page 2 of 11 Logo updated under non-rev change. Peregrine products are protected under one or more of the following U.S. Patents: