PE4305DS Datasheet, PDF (1/11 Pages) Peregrine Semiconductor Corp. – 50 Ω RF Digital Attenuator

Product Description
The PE4305 is a high linearity, 5-bit RF Digital Step Attenuator
(DSA) covering a 15.5 dB attenuation range in 0.5 dB steps,
and is pin compatible with the PE430x series. This 50-ohm RF
DSA provides both parallel (latched or direct mode) 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
PE4305 exhibits very low insertion loss and low power
consumption. This functionality is delivered in a 4x4 mm QFN
footprint.
The PE4305 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. Functional Schematic Diagram
RF Input
Switched Attenuator Array
RF Output
Product Specification
PE4305
50 Ω RF Digital Attenuator
5-bit, 15.5 dB, DC – 4.0 GHz
Features
• Attenuation: 0.5 dB steps to 15.5 dB
• Flexible parallel and serial programming
interfaces
• Latched or direct mode
• 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
• Pin compatible with PE430x series
• Packaged in a 20 Lead 4x4 mm QFN
Figure 2. Package Type
4x4 mm 20-Lead QFN
Parallel Control 5
Serial Control ³
Power-Up Control ¹
Control Logic Interface
Table 1. Electrical Specifications @ +25°C, V_DD = 3.0 V
Parameter
Operation Frequency
Insertion Loss²
Attenuation Accuracy
1 dB Compression³
Input IP3^{1, 2}
Return Loss
Switching Speed
Test Conditions
Any Bit or Bit
Combination
Two-tone inputs
+18 dBm
50% control to 0.5 dB
of final value
Frequency
DC - 2.2 GHz
DC - 2.2 GHz
1 MHz - 2.2 GHz
1 MHz - 2.2 GHz
DC - 2.2 GHz
Minimum
DC
-
Typical
1.5
-
-
30
34
-
52
15
20
-
-
Notes: 1. Device Linearity will begin to degrade below 1Mhz
2. See Max input rating in Table 3 & Figures on Pages 2 to 4 for data across frequency.
3. Note Absolute Maximum in Table 3.
Maximum
4000
2.25
±(0.25 + 3% of atten setting)
not to exceed ± 0.4 dB
-
-
-
1
Units
MHz
dB
dB
dBm
dBm
dB
µs
Document No. 70-0159-06 │ www.psemi.com
©2003-2008 Peregrine Semiconductor Corp. All rights reserved.
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