Product Specification
PE4302
Product Description
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.
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.
50
Ω
RF Digital Attenuator
6-bit, 31.5 dB, DC – 4.0 GHz
Features
•
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
•
Packaged in a 20 lead 4x4mm QFN
Figure 1. Functional Schematic Diagram
Switched Attenuator Array
RF Input
RF Output
Figure 2. Package Type
4x4mm -20 Lead QFN
Parallel Control
Serial Control
Power-Up Control
6
3
Control Logic Interface
2
Table 1. Electrical Specifications @ +25°C, V
DD
= 3.0 V
Parameter
Operation Frequency
Insertion Loss
2
Attenuation Accuracy
1 dB Compression
3
Input IP3
1,2
Return Loss
Switching Speed
50% control to 0.5 dB
of final value
Two-tone inputs
+18 dBm
Any Bit or Bit
Combination
DC - 2.2 GHz
DC
≤
1.0 GHz
1.0 < 2.2 GHz
1 MHz - 2.2 GHz
1 MHz - 2.2 GHz
DC - 2.2 GHz
Test Conditions
Frequency
Minimum
DC
-
-
30
-
15
-
Typical
Maximum
4000
Units
MHz
dB
dB
dB
dBm
dBm
dB
µs
1.5
-
34
52
20
-
1.75
±(0.10 + 3% of atten setting)
±(0.15 + 5% of atten setting)
-
-
-
1
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
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©2005 Peregrine Semiconductor Corp. All rights reserved.
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