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Peregrine Semiconductor - RF Digital Attenuator

Numéro de référence PE4304
Description RF Digital Attenuator
Fabricant Peregrine Semiconductor 
Logo Peregrine Semiconductor 





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PE4304 fiche technique
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Product Description
The PE4304 is a 75-ohm high-linearity, 6-bit RF Digital Step
Attenuator (DSA) covering a 31.5 dB attenuation range in 0.5
dB steps. The PE4304 provides both a 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 PE4304 exhibits very low insertion loss
and low power consumption. This functionality is delivered in a
4x4 mm QFN footprint.
The PE4304 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.
Product Specification
PE4304
75 RF Digital Attenuator
6-bit, 31.5 dB, DC – 2.0 GHz
Features
75 impedance
Attenuation: 0.5 dB steps to 31.5 dB
Low distortion for CATV and multi-carrier
applications
Flexible parallel and serial programming
interfaces
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
Packaged in a 20 lead 4x4 mm QFN
Figure 1. Functional Schematic Diagram
Switched Attenuator Array
RF Input
Figure 2. Package Type
4x4 mm -20 Lead QFN
RF Output
Parallel Control 6
Serial Control 3
Power-Up Control 2
Control Logic Interface
Table 1. Electrical Specifications @ +25 °C, VDD = 3.0 V, Zo = 75
Parameter
Test Conditions
Frequency Minimum
Operation Frequency
Insertion Loss2
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
DC 1.2 GHz
1 MHz 1.2 GHz
1 MHz 1.2 GHz
DC 1.2 GHz
DC
-
-
30
-
10
Switching Speed
50% control to 0.5 dB
of final value
-
Notes: 1. Device Linearity will begin to degrade below 1Mhz
2. Max input rating in Table 2 & Figures on Pages 4 to 6 for data across frequency.
3. Note Absolute Maximum in Table 3.
4. Measured in a 50 system.
Typical
1.4
-
34
52
13
-
Maximum
2000
1.8
±(0.15 + 4% of attenuation
setting)
-
-
-
1
Units
MHz
dB
dB
dBm
dBm
dB
µs
Document No. 70-0066-03 www.psemi.com
©2005 Peregrine Semiconductor Corp. All rights reserved.
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