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SP4302 Datasheet(PDF) 1 Page - SIPAT Co,Ltd |
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SP4302 Datasheet(HTML) 1 Page - SIPAT Co,Ltd |
1 / 10 page Page 1 of 10 The SP4302 is a high linearity, 6-bit RF Digital Step Attenuator (DSA) covering a 31.5 dB attenuation range in 0.5 dB steps. This 50-ohm RF DSA provides both parallel 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 SP4302 exhibits very low insertion loss and low power consumption. This functionality is delivered in a 4x4 mm QFN footprint. The SP4302 is manufactured on SIPAT’s CMOS 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 RF Digital Attenuator 6-bit, 31.5 dB, DC – 4.0 GHz Product Description Figure 1. Functional Schematic Diagram SP4302 Features • Attenuation: 0.5 dB steps to 31.5 dB • Flexible parallel and serial programming interfaces • 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 • Packaged in a 20 lead 4x4mm QFN Control Logic Interface Parallel Control Power-Up Control Serial Control RF Input RF Output Switched Attenuator Array 6 3 2 Table 1. Electrical Specifications @ +25°C, VDD = 3.0 V Parameter Test Conditions Frequency Minimum Typical Maximum Units Operation Frequency DC 4000 MHz Insertion Loss2 DC - 2.2 GHz - 1.5 1.75 dB Attenuation Accuracy Any Bit or Bit Combination DC ≤ 1.0 GHz 1.0 < 2.2 GHz - - ±(0.10 + 3% of atten setting) ±(0.15 + 5% of atten setting) 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 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. Figure 2. Package Type 4x4 mm 20-Lead QFN Tel: +86-23-62808818 Fax: +86-23-62805284 www.sipatsaw.com / sawmkt@sipat.com |
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