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UltraCMOS® RF Digital Step Attenuator

UltraCMOS® RF Digital Step Attenuator

PE43705

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The PE43705 is a 50Ω, HaRP™ technology-enhanced, 7-bit RF digital step attenuator (DSA) designed for use in 3G/4G wireless infrastructure and other high performance RF applications. This DSA is a pin-compatible upgraded version of PE43703 with higher power handling and a wider frequency, control voltage and operating temperature range. An integrated digital control interface supports both serial and parallel programming of the attenuation, including the capability to program an initial attenuation state at power-up. Covering a 31.75 dB attenuation range in 0.25 dB, 0.50 dB, or 1 dB steps, it maintains a monotonic step response from 50 MHz through 8 GHz. PE43705 also features safe attenuation state transitions and is offered in a 32-lead 5 × 5 mm QFN package. In addition, no external blocking capacitors are required if 0V DC is present on the RF ports.

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Industry-Leading Product

Specifications

X-MicrowaveYes
Description7-bit; 128 states
Min Freq.50 MHz
Max Freq.8 GHz
Max Typ. IL (dB)2.4
Min Typ. IL (dB)1.3
IIP3 (dBm)58
Attn Range (dB)0.00–31.75
Attn Step (dB)0.25/0.5/1.0
InterfaceParallel (Latched, Direct), Serial, Serial Addressable
Bits7
Attenuation Accuracy (dB @ 1 GHz)+(0.15 + 1.5% of setting), –(0.1 + 1% of setting)
Switching Time1000 ns
ESD HBM (V)1500
Package (mm)5x5
Package32L QFN
PCN/EOL

PCN – June 13, 2018: Wafer Fabrication Process – Dual Source, Ordering Code

About Product

Key Features

      Attenuation options: covers a 31.75 dB range in 0.25 dB, 0.5 dB, or 1.0 dB steps
      Safe attenuation state transitions
      High power handling
      High linearity: +58 dBm IIP3
      1.8V control logic-compatible
      105°C operating temperature
      Programming modes: Direct parallel, latched parallel, serial and serial addressable
      High-attenuation state @ power-up (PUP)
      ESD performance
      Packaging: 32-lead 5 × 5 mm QFN
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