PE94302 Datasheet, PDF (1/8 Pages) Peregrine Semiconductor Corp. – 50 Ω RF Digital Step Attenuator For Rad-Hard Space Applications 6-bit, 31.5 dB, DC - 4.0 GHz

Product Description
The PE94302 is a high linearity, 6-bit UltraCMOS™ RF Digital
Step Attenuator (DSA). This 50-ohm RF DSA covers a 31.5 dB
attenuation range in 0.5 dB steps. It provides both parallel and
serial CMOS control interface. The PE94302 maintains high
attenuation accuracy over frequency and temperature and
exhibits very low insertion loss and power consumption.
The PE94302 is optimized for commercial space applications.
Single Event Latch up (SEL) is physically impossible and
Single Event Upset (SEU) is better than 10-9 errors per bit /
day. Fabricated in Peregrine’s UltraCMOS™ technology, a
patented variation of silicon-on-insulator (SOI) technology on a
sapphire substrate, the PE94302 offers excellent RF
performance and intrinsic radiation tolerance.
Product Specification
PE94302
50 Ω RF Digital Step Attenuator
For Rad-Hard Space Applications
6-bit, 31.5 dB, DC – 4.0 GHz
Features
• Attenuation: 0.5 dB steps to 31.5 dB
• Flexible parallel and serial programming
interfaces
• 100 Krads (Si) Total Dose
• Positive CMOS control logic
• High attenuation accuracy and linearity
over temperature and frequency
• Low power - 100 µA at 3.0V
• 50 Ω impedance
Figure 1. Functional Schematic Diagram
RF Input
Switched Attenuator Array
RF Output
Figure 2. Package Type
28-lead CQFP
Parallel Control 6
Serial Control ³
Control Logic Interface
Table 1. Electrical Specifications @ -40°C ≤ Temp ≤ +85°C, 2.7V ≤ V_DD ≤ 3.30V
Parameter
Test Conditions Frequency
Min
Typical
Max
Units
Operation Frequency
DC - 4000
MHz
Insertion Loss
DC - 2.2 GHz
1.5
2.75
dB
0.5 dB - 8.0 dB Atten.
8.5 dB - 31.5 dB Atten.
DC - 1.0 GHz - (0.55 + 3.7% of atten. setting)
+ (0.55 + 3.7% of atten. setting)
+ 0.9
Attenuation Accuracy
0.5 dB - 4.0 dB Atten.
4.5 dB - 31.5 dB Atten.
0.5 dB - 23.0 dB Atten.
1.0 - 2.2 GHz
- (0.7+ 3.0% of atten. setting)
+ (0.70 + 3.0% of atten. setting)
dB
+ 0.9
23.5 dB - 31.5 dB Atten.
- (0.6 + 9.0% of atten. setting)
1 dB Compression
1 MHz - 2.2 GHz
33
Input IP3
Two-tone inputs
52
dBm
dBm
Return Loss
DC - 2.2 GHz
15
dB
RF Input Power (50 Ω)
12
dBm
Switching Speed Min to Max Atten. State
1
µs
Notes: 1. Device Linearity will begin to degrade below 1 MHz
2. Maximum Operating Power = +12 dBm
3. Specs are guaranteed to 2.2 GHz, Characterized to 4.0 GHz
Document No. 70-0186-04 │ www.psemi.com
©2005-2008 Peregrine Semiconductor Corp. All rights reserved.
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