Product Specification
PE43404
Product Description
The PE43404 is a high linearity, 4-bit RF Digital Step
Attenuator (DSA) covering a 15 dB attenuation range in 1.0 dB
steps. 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 PE43404 exhibits very low insertion
loss and low power consumption. This functionality is delivered
in a 4x4 mm QFN footprint.
The PE43404 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
Switched Attenuator Array
RF Input
RF Output
75
Ω
RF Digital Attenuator
4-bit, 15 dB, DC – 2.0 GHz
Features
•
Attenuation: 1.0 dB steps to 15 dB
•
Flexible parallel and serial programming
interfaces
•
Parallel latched or direct mode
•
High attenuation accuracy and linearity
over temperature and frequency
•
Unique power-up state selection
•
Very low power consumption
•
Single-supply operation
•
Positive CMOS control logic
•
75
Ω
impedance
•
Packaged in a 20 Lead 4x4 mm QFN
Figure 2. Package Type
20 Lead 4x4 mm QFN
Parallel Control
Serial Control
Power-Up Control
5
3
Control Logic Interface
1
Table 1. Electrical Specifications @ +25°C, V
DD
= 3.0 V
Parameter
Operation Frequency
Insertion Loss
1
Attenuation Accuracy
1 dB Compression
3,4
Input IP3
1,2,4
Return Loss
Switching Speed
Notes: 1.
2.
3.
4.
Two-tone inputs up to
+18 dBm
Zo = 75 ohms
50% control
Any Bit or Bit
Combination
DC
≤
1.2 GHz
DC
≤
1.2 GHz
1 MHz
≤
1.2 GHz
1 MHz
≤
1.2 GHz
DC
≤
1.2 GHz
Test Conditions
Frequency
Minimum
DC
-
-
30
-
10
-
Typical
Maximum
2000
Units
MHz
dB
dB
dBm
dBm
dB
µs
1.4
-
34
52
13
-
1.95
±(0.25+ 7% of atten setting)
-
-
-
1
Device Linearity will begin to degrade below 1MHz
Max input rating in Table 3 & Figures on Pages 4 to 6 for data across frequency.
Note Absolute Maximum in Table 3.
Measured in a 50
Ω
system.
©2008 Peregrine Semiconductor Corp. All rights reserved.
Page 1 of 11
Document No. 70-0258-02
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