Product Specification
PE4302
50 Ω RF Digital Attenuator
6-bit, 31.5 dB, DC – 4.0 GHz
Product Description
Features
The PE4302 is a high linearity, 6-bit RF Digital Step Attenuator
“DSA” covering a 31.5 dB attenuation range in 0.5 dB steps.
This 50-ohm RF DSA provides both parallel and serial CMOS
control interface operates on a single 3-volt supply and
maintains high attenuation accuracy over frequency and
temperature. It also has a unique control interface that allows
the user to select an initial attenuation state at power-up. The
PE4302 exhibits very low insertion loss and low power
consumption. This functionality is delivered in a 4x4mm QFN
footprint.
• Attenuation: 0.5 dB steps to 31.5 dB
• Flexible parallel and serial programming
interfaces
• Unique power-up state selection
• Positive CMOS control logic
• High attenuation accuracy and linearity
over temperature and frequency
• Very low power consumption
• Single-supply operation
• 50 Ω impedance
The PE4302 is manufactured in Peregrine’s patented Ultra
Thin Silicon (UTSi®) CMOS process, offering the performance
of GaAs with the economy and integration of conventional
CMOS.
• Packaged in a 20 lead 4x4mm QFN
Figure 1. Functional Schematic Diagram
Figure 2. Package Type
4x4mm -20 Lead QFN
Switched Attenuator Array
RF Input
RF Output
6
3
2
Parallel Control
Serial Control
Control Logic Interface
Power-Up Control
Table 1. Electrical Specifications @ +25°C, VDD = 3.0 V
Parameter
Test Conditions
Frequency
Minimum
Typical
Maximum
Units
MHz
dB
Operation Frequency
Insertion Loss2
DC
-
4000
DC - 2.2 GHz
DC ≤ 1.0 GHz
1.0 < 2.2 GHz
1 MHz - 2.2 GHz
1.5
-
1.75
±(0.10 + 3% of atten setting)
±(0.15 + 5% of atten setting)
-
dB
dB
Any Bit or Bit
Combination
Attenuation Accuracy
-
1 dB Compression3
Input IP31,2
30
-
34
52
20
dBm
dBm
Two-tone inputs
+18 dBm
1 MHz - 2.2 GHz
DC - 2.2 GHz
-
Return Loss
15
-
dB
50% control to 0.5 dB
of final value
Switching Speed
-
-
1
µs
Notes: 1. Device Linearity will begin to degrade below 1 Mhz
2. See Max input rating in Table 2 & Figures on Pages 2 to 4 for data across frequency.
3. Note Absolute Maximum in Table 3.
Document No. 70/0056~02D │ www.psemi.com
©2005 Peregrine Semiconductor Corp. All rights reserved.
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