PE4309 Datasheet, PDF (1/9 Pages) Peregrine Semiconductor Corp. – 50 OHM 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.
Figure 1. Functional Schematic Diagram
RF Input
Switched Attenuator Array
RF Output
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 2. Package Type
4x4 mm 24-Lead QFN
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. 70-0218-07 │ www.psemi.com
©2007 Peregrine Semiconductor Corp. All rights reserved.
Page 1 of 9