Product Specification
PE4309
Product Description
This product is a high linearity, 6-bit RF Digital Step Attenuator
(DSA) covering a 31.5 dB attenuation range in 0.5 dB steps.
The Peregrine 50Ω RF DSA provides a parallel CMOS control
interface and it operates on 3-volt to 5-volt supply. It maintains
high attenuation accuracy over frequency and temperature and
exhibits very low insertion loss and low power consumption.
This Peregrine DSA is available in a 4x4 mm 24 lead QFN
footprint with an exposed ground paddle.
The PE4309 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
50
Ω
RF Digital Attenuator
6-bit, 31.5 dB, DC-4.0 GHz
Features
•
Best in class 2.0 kV HBM ESD tolerance
•
Low Insertion Loss: 1.6 dB typical
•
Attenuation: 0.5 dB steps to 31.5 dB
•
High Linearity: Typical 52 dB IP3
•
Best in Class Attenuation accuracy
•
Parallel programming interface
•
Single supply, 3V to 5V operation
•
Standard 3V or 5V CMOS control logic
independent of supply voltage
•
Very low power consumption
•
RoHS-compliant 24-lead 4x4 mm QFN
Figure 2. Package Type
4x4 mm 24-Lead QFN
Parallel Control
6
Control Logic Interface
Table 1. Electrical Specifications @ +25°C, V
DD
= 3.0 V - 5.0 V
Parameter
Operation Frequency
Insertion Loss
Any Bit or Bit Combination
Any Bit or Bit Combination
0.5 - 7.5 dB States
3
8.0 - 15.5 dB States
3
16.0 - 31.5 dB States
3
DC - 2.2 GHz
2.2 - 4.0 GHz
DC
≤
1.0 GHz
1.0 < 2.2 GHz
2.2 < 3.8 GHz
2.2 < 3.8 GHz
2.2 < 3.8 GHz
1 MHz - 2.2 GHz
2.2 - 4.0 GHz
Two-tone inputs +18 dBm
1 MHz - 2.2 GHz
2.2 - 4.0 GHz
DC - 2.2 GHz
2.2 - 4.0 GHz
50% of control voltage to
90% of final attenuation level
Test Conditions
4
Frequency
Min
DC
-
-
-
-
-
-
-
30
-
-
-
15
10
-
Typ
1.6
2.2
-
-
0.15
0.7
1.2
32
32
52
45
20
20
-
Maximum
4000
2
3.4
±(0.10 + 3% of atten setting), not to exceed +0.20 dB
±(0.15 + 3% of atten setting)
-
-
-
-
-
-
-
-
-
1
Units
MHz
dB
dB
dB
dB
dB
dB
dB
dBm
dBm
dBm
dBm
dB
dB
µs
Attenuation Accuracy
1 dB Compression
2
Input IP3
1
Return Loss
Switching Speed
Notes: 1.
2.
3.
4.
Device Linearity will begin to degrade below 5 MHz.
Note Absolute Maximum in Table 4.
See Figures 12 and 13 for typical attenuation error.
Measurements made in a 50 ohm system (see Figure 4, Test Circuit Block Diagram). Resistors (R2, R3, R5, R6, R7) with a
value of 10K-ohm are used to decouple the RF path from the control inputs.
©2007 Peregrine Semiconductor Corp. All rights reserved.
Page 1 of 9
Document No. 70-0218-06
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