Product Specification
PE4307
75 Ω RF Digital Attenuator
5-bit, 15.5 dB, DC – 2.0 GHz
Product Description
Features
The PE4307 is a high linearity, 5-bit RF Digital Step Attenuator
(DSA) covering a 15.5 dB attenuation range in 0.5 dB steps.
The device is pin compatible with the PE430x series. This 75-
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 PE4307 exhibits very low insertion loss and low power
consumption. This functionality is delivered in a 4x4 mm QFN
footprint.
• 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
The PE4307 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.
• 75 Ω impedance
• Pin compatible with PE430x series
• Packaged in a 20 Lead 4x4 mm QFN
Figure 2. Package Type
Figure 1. Functional Schematic Diagram
20 Lead 4x4 mm QFN
Switched Attenuator Array
RF Input
RF Output
5
3
1
Parallel Control
Serial Control
Control Logic Interface
Power-Up Control
Table 1. Electrical Specifications @ +25°C, VDD = 3.0 V
Parameter
Operation Frequency
Insertion Loss1
Test Conditions
Frequency
Minimum
Typical
Maximum
2000
Units
MHz
dB
DC
-
DC ≤ 1.2 GHz
DC ≤ 1.2 GHz
1.4
-
1.95
±(0.15 + 4% of atten setting)
Not to exceed +0.25dB
dB
dB
Any Bit or Bit
Combination
Attenuation Accuracy
1 dB Compression3,4
Input IP31,2,4
-
30
-
1 MHz ≤ 1.2 GHz
1 MHz ≤ 1.2 GHz
DC ≤ 1.2 GHz
34
52
13
-
-
-
dBm
dBm
dB
Two-tone inputs up to
+18 dBm
Return Loss
Zo = 75 ohms
10
-
-
50% control to 0.5 dB
of final value
Switching Speed
1
µs
Notes: 1. Device Linearity will begin to degrade below 1MHz
2. Max input rating in Table 2 & Figures on Pages 2 to 4 for data across frequency.
3. Note Absolute Maximum in Table 3.
4. Measured in a 50 Ω system.
Document No. 70-0161-03 │ www.psemi.com
©2005 Peregrine Semiconductor Corp. All rights reserved.
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