PE4309_07 Datasheet, PDF (1/9 Pages) Peregrine Semiconductor Corp. – 50 Ω RF Digital Attenuator 6-bit, 31.5 dB, DC-4.0 GHz

Product Description
This product is a high linearity, 6-bit RF Digital Step Attenuator
(DSA) covering a 31.5 dB attenuation range in 0.5 dB steps.
The Peregrine 50Ω RF DSA provides a parallel CMOS control
interface and it operates on 3-volt to 5-volt supply. It maintains
high attenuation accuracy over frequency and temperature and
exhibits very low insertion loss and low power consumption.
This Peregrine DSA is available in a 4x4 mm 24 lead QFN
footprint with an exposed ground paddle.
The PE4309 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
PE4309
50 Ω RF Digital Attenuator
6-bit, 31.5 dB, DC-4.0 GHz
Features
• Best in class 2.0 kV HBM ESD tolerance
• Low Insertion Loss: 1.6 dB typical
• Attenuation: 0.5 dB steps to 31.5 dB
• High Linearity: Typical 52 dB IP3
• Best in Class Attenuation accuracy
• Parallel programming interface
• Single supply, 3V to 5V operation
• Standard 3V or 5V CMOS control logic
independent of supply voltage
• Very low power consumption
• RoHS-compliant 24-lead 4x4 mm QFN
Figure 1. Functional Schematic Diagram
RF Input
Switched Attenuator Array
Figure 2. Package Type
4x4 mm 24-Lead QFN
RF Output
Parallel Control 6
Control Logic Interface
Table 1. Electrical Specifications @ +25°C, V_DD = 3.0 V - 5.0 V
Parameter
Test Conditions⁴
Frequency Min Typ
Maximum
Units
Operation Frequency
DC
4000
MHz
Insertion Loss
DC - 2.2 GHz
-
1.6
2
dB
2.2 - 4.0 GHz
-
2.2
3.4
dB
Attenuation Accuracy
Any Bit or Bit Combination
Any Bit or Bit Combination
0.5 - 7.5 dB States ³
8.0 - 15.5 dB States ³
16.0 - 31.5 dB States³
DC ≤ 1.0 GHz
1.0 < 2.2 GHz
2.2 < 3.8 GHz
2.2 < 3.8 GHz
2.2 < 3.8 GHz
-
- ±(0.10 + 3% of atten setting), not to exceed +0.20 dB dB
-
-
±(0.15 + 3% of atten setting)
dB
-
0.15
-
dB
-
0.7
-
dB
-
1.2
-
dB
1 dB Compression²
1 MHz - 2.2 GHz
30
32
2.2 - 4.0 GHz
-
32
Input IP3¹
Two-tone inputs +18 dBm
1 MHz - 2.2 GHz
2.2 - 4.0 GHz
-
-
52
45
Return Loss
DC - 2.2 GHz
2.2 - 4.0 GHz
15
20
10
20
-
dBm
-
dBm
-
dBm
-
dBm
-
dB
-
dB
Switching Speed
50% of control voltage to
90% of final attenuation level
-
-
1
µs
Notes: 1. Device Linearity will begin to degrade below 5 MHz.
2. Note Absolute Maximum in Table 4.
3. See Figures 12 and 13 for typical attenuation error.
4. Measurements made in a 50 ohm system (see Figure 4, Test Circuit Block Diagram). Resistors (R2, R3, R5, R6, R7) with a
value of 10K-ohm are used to decouple the RF path from the control inputs.
Document No. 70-0218-06 │ www.psemi.com
©2007 Peregrine Semiconductor Corp. All rights reserved.
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