PE43702 Datasheet, PDF (1/11 Pages) Peregrine Semiconductor – RF Digital Attenuator

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 V_DD 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
Product Specification
PE43702
50 Ω RF Digital Attenuator
7-bit, 31.75 dB, 9 kHz - 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 7
Serial In
CLK
LE
Control Logic Interface
P/S
Document No. 70-0244-04 │ www.psemi.com
©2008-2009 Peregrine Semiconductor Corp. All rights reserved.
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