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Peregrine Semiconductor

PE43073 Datasheet Preview

PE43073 Datasheet

RF Digital Attenuator

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Product Description
The PE43703 is a HaRP-enhanced, high linearity, 7-bit RF
Digital Step Attenuator (DSA). This highly versatile DSA
covers a 31.75 dB attenuation range in 0.25 dB, 0.5 dB, or 1.0
dB steps. The customer can choose which step size and
associated specifications are best suited for their application.
The Peregrine 50RF DSA provides multiple CMOS control
interfaces and an optional external Vss feature. It maintains
high attenuation accuracy over frequency and temperature and
exhibits very low insertion loss and low power consumption.
Performance does not change with Vdd due to on-board
regulator. This next generation Peregrine DSA is available in a
5x5 mm 32-lead QFN footprint.
The PE43703 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. Package Type
32-lead 5x5x0.85 mm QFN Package
Product Specification
PE43703
50 RF Digital Attenuator
7-bit, 31.75 dB, DC-6.0 GHz, VssEXT option
Features
HaRP™-enhanced UltraCMOS™ device
Attenuation options: 0.25 dB, 0.5 dB, or
1.0 dB steps to 31.75 dB
0.25 dB monotonicity for 4.0 GHz
0.5 dB monotonicity for 5.0 GHz
1 dB monotonicity for 6.0 GHz
High Linearity: Typical +59 dBm IIP3
Excellent low-frequency performance
Optional External Vss Control (VssEXT)
3.3 V or 5.0 V Power Supply Voltage
Fast switch settling time
Programming Modes:
Direct Parallel
Latched Parallel
Serial-Addressable: Program up to
eight addresses 000 - 111
High-attenuation state @ power-up (PUP)
CMOS Compatible
No DC blocking capacitors required
Figure 2. Functional Schematic Diagram
RF Input
Switched Attenuator Array
RF Output
Parallel Control 7
Serial In
www.DataSheet4U.com
CLK
LE
Control Logic Interface
A0 A1 A2
Document No. 70-0245-04 www.psemi.com
(optional)
P/S VssEXT
©2008-2009 Peregrine Semiconductor Corp. All rights reserved.
Page 1 of 15




Peregrine Semiconductor

PE43073 Datasheet Preview

PE43073 Datasheet

RF Digital Attenuator

No Preview Available !

PE43703
Product Specification
Table 1. Electrical Specifications: 0.25 dB steps @ +25°C, VDD = 3.3 V or 5.0 V, VssEXT = -2.7 V or GND
Parameter
Test Conditions
Frequency Min Typical Max Units
Frequency Range
Attenuation Range
0.25 dB Step
Insertion Loss
Attenuation Error
Return Loss
0 dB - 7.75 dB Attenuation settings
8 dB - 31.75 dB Attenuation settings
0 dB - 31.75 dB Attenuation settings
Relative Phase
All States
P1dB
Input
IIP3 Two tones at +18 dBm, 20 MHz spacing
Typical Spurious Value1 VssEXT grounded
Video Feed Through
DC – 4
GHz
0 – 31.75
dB
DC 4 GHz
DC < 3 GHz
DC < 3 GHz
3 GHz 4 GHz
DC - 4 GHz
1.9 2.4 dB
±(0.2+1.5%)
±(0.15+4%)
±(0.25+4.5%)
dB
dB
dB
18 dB
DC - 4 GHz
44
deg
20 MHz - 4 GHz
30
32
dBm
20 MHz - 4 GHz
59
dBm
1MHz
-110
dBm
10 mVpp
Switching Time
50% DC CTRL to 10% / 90% RF
650 ns
RF Trise/Tfall
10% / 90% RF
400 ns
Settling Time
RF settled to within 0.05 dB of final value.
RBW = 5 MHz, Averaging ON.
4 25 µs
Note: 1. To prevent negative voltage generator spurs, supply –2.7 volts to VssEXT.
Performance Plots, 0.25 dB state
Figure 3. 0.25 dB Step Error vs. Frequency*
0.500
200 MHz
2200 MHz
900 MHz
3000 MHz
1800 MHz
0.400
Figure 4. 0.25dB Attenuation vs. Attenuation State
0.25-dB PE43701 Attenuation
35
900 MHz
30 1800 MHz
2200 MHz
25 3000 MHz
0.300
20
0.200
0.100
15
10
5
0.000
0.0 4.0 8.0 12.0 16.0 20.0 24.0 28.0 32.0
Attenuation Setting (dB.)
*Monotonicity is held so long as Step-Error does not cross zero
0
0
5 10 15 20 25 30 35
AAtttetennuuaattiioonnSStattaete
Figure 5. 0.25 dB Major State Bit Error
2.00
0.25dB State
4dB State
0.5 dB State
8dB State
1dB State
16dB State
1.50
1.00
ww0.w50.DataSheet4U.com
0.00
-0.50
-1.00
-1.50
-2.00
0.0
1.0 2.0
Frequency (GHz)
2dB State
31.75dB State
3.0
4.0
©2008-2009 Peregrine Semiconductor Corp. All rights reserved.
Page 2 of 15
Figure 6. 0.25 dB Attenuation Error vs. Frequency
1.500
200 MHz
2200 MHZ
900 MHz
3000 MHz
1800 MHz
4000 MHz
1.000
0.500
0.000
-0.500
-1.000
-1.500
0.0 4.0 8.0 12.0 16.0 20.0 24.0 28.0 32.0
Attenuation Setting (dB.)
Document No. 70-0245-04 UltraCMOS™ RFIC Solutions


Part Number PE43073
Description RF Digital Attenuator
Maker Peregrine Semiconductor
Total Page 15 Pages
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