Product Specification
PE43702
Product Description
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.
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.
Figure 1. Package Type
24-lead 4x4x0.85 mm QFN Package
50
Ω
RF Digital Attenuator
7-bit, 31.75 dB, DC-4.0 GHz
Features
•
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
•
High-attenuation state @ power-up (PUP)
•
CMOS Compatible
•
No DC blocking capacitors required
•
Packaged in a 24-lead 4x4x0.85 mm QFN
•
Figure 2. Functional Schematic Diagram
RF Input
RF Output
Parallel Control
Serial In
CLK
LE
7
Control Logic Interface
P/S
Document No. 70-0244-03
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www.psemi.com
©2008-2009 Peregrine Semiconductor Corp. All rights reserved.
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