Product Specification
PE43702
50 Ω RF Digital Attenuator
7-bit, 31.75 dB, DC-4.0 GHz
Product Description
Features
The PE43702 is a HaRP™-enhanced, high linearity, 7-bit RF
Digital Step Attenuator (DSA). This highly versatile DSA
covers a 31.75 dB attenuation range in 0.25 dB steps. The
Peregrine 50Ω RF DSA provides both a serial and parallel
CMOS control interface. It maintains high attenuation accuracy
over frequency and temperature and exhibits very low insertion
loss and low power consumption. Performance does not
change with Vdd due to on-board regulator. This next
generation Peregrine DSA is available in a 4x4 mm 24 lead
QFN footprint.
• HaRP™-enhanced UltraCMOS™ device
• Attenuation: 0.25 dB steps to 31.75 dB
• High Linearity: Typical +57 dBm IIP3
• Excellent low-frequency performance
• 3.3 V or 5.0 V Power Supply Voltage
• Fast switch settling time
• Programming Modes:
• Direct Parallel
• Latched Parallel
• Serial
The PE43702 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.
• High-attenuation state @ power-up (PUP)
• CMOS Compatible
• No DC blocking capacitors required
• Packaged in a 24-lead 4x4x0.85 mm QFN
Figure 1. Package Type
24-lead 4x4x0.85 mm QFN Package
Figure 2. Functional Schematic Diagram
RF Output
RF Input
7
Parallel Control
Serial In
Control Logic Interface
CLK
LE
P/S
Document No. 70-0244-03 │ www.psemi.com
©2008-2009 Peregrine Semiconductor Corp. All rights reserved.
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