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Peregrine Semiconductor

PE43701 Datasheet Preview

PE43701 Datasheet

RF Digital Attenuator 7-bit

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Product Description
wwTwh.deataPshEe4et347u.0co1mis 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 steps. The
Peregrine 50RF DSA provides a parallel or serial-
addressable CMOS control interface. 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 PE43701 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
PE43701
50 RF Digital Attenuator
7-bit, 31.75 dB, DC-4.0 GHz
Features
HaRP™-enhanced UltraCMOS™ device
Attenuation: 0.25 dB steps to 31.75 dB
High Linearity: Typical +59 dBm IIP3
Excellent low-frequency performance
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
Packaged in a 32-lead 5x5x0.85 mm QFN
Figure 2. Functional Schematic Diagram
RF Input
Switched Attenuator Array
Parallel Control 7
Serial In
CLK
LE
A0
Control Logic Interface
A1 A2
P/S
Document No. 70-0243-04 www.psemi.com
RF Output
©2008-2009 Peregrine Semiconductor Corp. All rights reserved.
Page 1 of 13




Peregrine Semiconductor

PE43701 Datasheet Preview

PE43701 Datasheet

RF Digital Attenuator 7-bit

No Preview Available !

PE43701
Product Specification
Table 1. Electrical Specifications @ +25°C, VDD = 3.3 V or 5.0 V
Parameter
Test Conditions
Frequency
Frequency Range
wwAwt.tdeantuaasthioenetR4ua.ncgoem
Insertion Loss
Attenuation Error
Return Loss
0.25 dB Step
0 dB - 7.75 dB Attenuation settings
8 dB - 31.75 dB Attenuation settings
0 dB - 31.75 dB Attenuation settings
DC 4 GHz
DC < 3 GHz
DC < 3 GHz
3 GHz 4 GHz
DC - 4 GHz
Relative Phase
All States
DC - 4 GHz
P1dB
Input
20 MHz - 4 GHz
IIP3 Two tones at +18 dBm, 20 MHz spacing 20 MHz - 4 GHz
Typical Spurious Value
1MHz
Video Feed Through
Switching Time
50% DC CTRL to 10% / 90% RF
RF Trise/Tfall
Settling Time
10% / 90% RF
RF settled to within 0.05 dB of final value
RBW = 5 MHz, Averaging ON.
Min
30
Typical
DC – 4
0 – 31.75
1.9
18
44
32
59
-110
10
650
400
4
Max
2.4
±(0.2+1.5%)
±(0.15+4%)
±(0.25+4.5%)
Units
GHz
dB
dB
dB
dB
dB
dB
deg
dBm
dBm
dBm
mVpp
ns
ns
25 µs
Performance Plots
Figure 3. 0.25 dB Step Error vs. Frequency*
200 MHz
2200 MHz
0.500
900 MHz
3000 MHz
1800 MHz
0.400
0.300
0.200
0.100
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
Figure 4. 0.25dB Attenuation vs. Attenuation
0.25-dB PE43701 Attenuation
35
900 MHz
30 1800 MHz
2200 MHz
3800 MHz
25
20
15
10
5
0
0 5 10 15 20 25 30 35
Attenuation State
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
2dB State
31.75dB State
1.50
1.00
0.50
0.00
-0.50
-1.00
-1.50
-2.00
0.0 1.0 2.0 3.0
Frequency (GHz)
©2008-2009 Peregrine Semiconductor Corp. All rights reserved.
Page 2 of 13
4.0
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. 70-0243-04 UltraCMOS™ RFIC Solutions


Part Number PE43701
Description RF Digital Attenuator 7-bit
Maker Peregrine Semiconductor
Total Page 13 Pages
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