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PDF PE4308 Data sheet ( Hoja de datos )
| Número de pieza | PE4308 | |
| Descripción | RF Digital Attenuator | |
| Fabricantes | Peregrine Semiconductor | |
| Logotipo |  |
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Product Description
The PE4308 is a high linearity, 5-bit RF Digital Step Attenuator
(DSA) covering 31 dB attenuation range in 1dB steps, and 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
PE4308 exhibits very low insertion loss and low power
consumption. This functionality is delivered in a 4x4 mm QFN
footprint.
The PE4308 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
RF Input
Switched Attenuator Array
RF Output
Product Specification
PE4308
75 Ω RF Digital Attenuator
5-bit, 31 dB, DC – 4.0 GHz
Features
• Attenuation: 1 dB steps to 31 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
• 75 Ω impedance
• Pin compatible with PE430x series
• Packaged in a 20 Lead 4x4 mm QFN
Figure 2. Package Type
20 Lead 4x4 mm QFN
Parallel Control 5
Serial Control 3
Power-Up Control 2
Control Logic Interface
Table 1. Electrical Specifications @ +25°C, VDD = 3.0 V
Parameter
Test Conditions
Frequency
Minimum
Operation Frequency
Insertion Loss2
DC ≤ 1.2 GHz
DC
-
Attenuation Accuracy
1 dB Compression3,4
Input IP31,2,4
Return Loss
Any Bit or Bit
Combination
Two-tone inputs up to
+18 dBm
DC ≤ 1.2 GHz
1 MHz ≤ 1.2 GHz
1 MHz ≤ 1.2 GHz
DC ≤ 1.2 GHz
-
30
-
10
Switching Speed
50% control to 0.5 dB
of final value
-
Notes: 1. Device Linearity will begin to degrade below 1 MHz
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.
Typical
1.4
-
34
52
13
-
Maximum
2000
1.95
±(0.2 + 4% of atten setting)
Not to Exceed +0.4 dB
-
-
-
1
Units
MHz
dB
dB
dB
dBm
dBm
dB
µs
Document No. 70-0162-03 │ www.psemi.com
©2005 Peregrine Semiconductor Corp. All rights reserved.
Page 1 of 11
1 page  
PE4308
Product Specification
Typical Performance Data (25°C, VDD=3.0 V unless otherwise noted)
Figure 10. Attenuation Error Vs. Frequency
Figure 11. Attenuation Error Vs. Attenuation
Setting
0.5 0.4
2dB 0.2
0
8dB 0
-0.5 16dB
-0.2
-1
31dB
-0.4
-1.5 -0.6
10MHz, -40C
10MHz, 25C
10MHz, 85C
-2
0
500
1000
1500
2000
RF Frequency (MHz)
-0.8
0
5 10 15 20 25 30 35
Attenuation Setting (dB)
Figure 12. Attenuation Error Vs. Attenuation
Setting
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
0
500MHz, -40C
500MHz, 25C
500MHz, 85C
5 10 15 20 25 30 35
Attenuation Setting (dB)
Figure 13. Attenuation Error Vs. Attenuation
Setting
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
0
1GHz, -40C
1GHz, 25C
1GHz, 85C
5 10 15 20 25 30 35
Attenuation Setting (dB)
Document No. 70-0162-03 │ www.psemi.com
©2005 Peregrine Semiconductor Corp. All rights reserved.
Page 5 of 11
5 Page 
PE4308
Product Specification
Sales Offices
The Americas
Peregrine Semiconductor Corp.
9450 Carroll Park Drive
San Diego, CA 92121
Tel 858-731-9400
Fax 858-731-9499
Europe
Peregrine Semiconductor Europe
Commercial Products:
Bâtiment Maine
13-15 rue des Quatre Vents
F- 92380 Garches, France
Tel: +33-1-47-41-91-73
Fax : +33-1-47-41-91-73
Space and Defense Products:
180 Rue Jean de Guiramand
13852 Aix-En-Provence cedex 3, France
Tel: +33(0) 4 4239 3361
Fax: +33(0) 4 4239 7227
North Asia Pacific
Peregrine Semiconductor K.K.
5A-5, 5F Imperial Tower
1-1-1 Uchisaiwaicho, Chiyoda-ku
Tokyo 100-0011 Japan
Tel: +81-3-3502-5211
Fax: +81-3-3502-5213
South Asia Pacific
Peregrine Semiconductor
28G, Times Square,
No. 500 Zhangyang Road,
Shanghai, 200122, P.R. China
Tel: +86-21-5836-8276
Fax: +86-21-5836-7652
For a list of representatives in your area, please refer to our Web site at: www.psemi.com
Data Sheet Identification
Advance Information
The product is in a formative or design stage. The data
sheet contains design target specifications for product
development. Specifications and features may change in
any manner without notice.
Preliminary Specification
The data sheet contains preliminary data. Additional data
may be added at a later date. Peregrine reserves the right
to change specifications at any time without notice in order
to supply the best possible product.
Product Specification
The data sheet contains final data. In the event Peregrine
decides to change the specifications, Peregrine will notify
customers of the intended changes by issuing a DCN
(Document Change Notice).
The information in this data sheet is believed to be reliable.
However, Peregrine assumes no liability for the use of this
information. Use shall be entirely at the user’s own risk.
No patent rights or licenses to any circuits described in this
data sheet are implied or granted to any third party.
Peregrine’s products are not designed or intended for use in
devices or systems intended for surgical implant, or in other
applications intended to support or sustain life, or in any
application in which the failure of the Peregrine product could
create a situation in which personal injury or death might occur.
Peregrine assumes no liability for damages, including
consequential or incidental damages, arising out of the use of
its products in such applications.
The Peregrine name, logo, and UTSi are registered trademarks
and UltraCMOS is a trademark of Peregrine Semiconductor
Corp.
Document No. 70-0162-03 │ www.psemi.com
©2005 Peregrine Semiconductor Corp. All rights reserved.
Page 11 of 11
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| PDF Descargar | [ Datasheet PE4308.PDF ] | |
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