PE43703_14 Datasheet, PDF (1/15 Pages) Peregrine Semiconductor – 50 Ω RF Digital Attenuator

Product Description
The PE43703 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, 0.5 dB, or 1.0
dB steps. The customer can choose which step size and
associated specifications are best suited for their application.
The Peregrine 50Ω RF DSA provides multiple CMOS control
interfaces and an optional external Vss feature. 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
5x5 mm 32-lead QFN footprint.
The PE43703 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
32-lead 5x5x0.85 mm QFN Package
Product Specification
PE43703
50 Ω RF Digital Attenuator
7-bit, 31.75 dB, 9 kHz - 6000 MHz
Vss_EXT option
Features
• HaRP™-enhanced UltraCMOS™ device
• Attenuation options: 0.25 dB, 0.5 dB, or
1.0 dB steps to 31.75 dB
• 0.25 dB monotonicity for ≤ 4.0 GHz
• 0.5 dB monotonicity for ≤ 5.0 GHz
• 1 dB monotonicity for ≤ 6.0 GHz
• High Linearity: Typical +59 dBm IIP3
• Excellent low-frequency performance
• Optional External Vss Control (Vss_EXT)
• 3.3 V or 5.0 V Power Supply Voltage
• Fast switch settling time
• Programming Modes:
• Direct Parallel
• Latched Parallel
• Serial-Addressable: Program up to
eight addresses 000 - 111
• High-attenuation state @ power-up (PUP)
• CMOS Compatible
• No DC blocking capacitors required
Figure 2. Functional Schematic Diagram
RF Input
Switched Attenuator Array
RF Output
Parallel Control 7
Serial In
CLK
LE
Control Logic Interface
A0
A1
A2
(optional)
P/S Vss_EXT
Document No. 70-0245-05 │ www.psemi.com
©2008-2009 Peregrine Semiconductor Corp. All rights reserved.
Logo updated under non-rev change. Peregrine products are protected under one or more of the following U.S. Patents: http://patents.psemi.com
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