Digital step attenuators PE43020 pages

Product Specification

PE4302
50 Ω RF Digital Attenuator
6-bit, 31.5 dB, DC – 4.0 GHz

Product Description
The PE4302 is a high linearity, 6-bit RF Digital Step Attenuator
(DSA) covering a 31.5 dB attenuation range in 0.5 dB steps.
This 50-ohm RF DSA provides both parallel 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
PE4302 exhibits very low insertion loss and low power
consumption. This functionality is delivered in a 4x4 mm QFN
footprint.

Features
• Attenuation: 0.5 dB steps to 31.5 dB

The PE4302 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.

• Single-supply operation

Figure 1. Functional Schematic Diagram

Figure 2. Package Type

• 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
• 50 Ω impedance
• Packaged in a 20 lead 4x4mm QFN

4x4 mm 20-Lead QFN

Switched Attenuator Array
RF Input

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
Parameter

Test Conditions

Frequency

Operation Frequency

DC

Units

50% control to 0.5 dB
of final value

4000

MHz

-

1.5

1.75

dB

DC ≤ 1.0 GHz
1.0 < 2.2 GHz

-

-

±(0.10 + 3% of atten setting)
±(0.15 + 5% of atten setting)

dB
dB

30

34

-

dBm

1 MHz - 2.2 GHz

-

52

-

dBm

DC - 2.2 GHz

Two-tone inputs
+18 dBm

Return Loss
Switching Speed

Maximum

1 MHz - 2.2 GHz

Any Bit or Bit
Combination

1 dB Compression3
Input IP31,2

Typical

DC - 2.2 GHz

Insertion Loss2
Attenuation Accuracy

Minimum

15

20

-

dB

-

-

1

µs

Notes: 1. Device Linearity will begin to degrade below 1 Mhz
2. See Max input rating in Table 3 & Figures on Pages 2 to 4 for data across frequency.
3. Note Absolute Maximum in Table 3.
Document No. 70-0056-04 │ www.psemi.com

©2003-2008 Peregrine Semiconductor Corp. All rights reserved.
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