4309-00【PDF 1/9 页】KIT EVAL FOR 4309 RF DSA

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Product Specification

PE4309

50 ? RF Digital Attenuator

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 50 ? 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

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

Switched Attenuator Array

RF Input

RF Output

Parallel Control

Control Logic Interface

Table 1. Electrical Specifications @ +25°C, V DD = 3.0 V - 5.0 V

Parameter

Test Conditions 4

Frequency

Min

Typ

Maximum

Units

Operation Frequency

4000

MHz

Insertion Loss

Any Bit or Bit Combination

DC - 2.2 GHz

2.2 - 4.0 GHz

DC ≤ 1.0 GHz

1.0 < 2.2 GHz

1.6

2.2

3.4

±(0.10 + 3% of atten setting), not to exceed +0.20 dB

±(0.15 + 3% of atten setting)

Attenuation Accuracy

0.5 - 7.5 dB States 3

2.2 < 3.8 GHz

0.15

1 dB Compression 2

8.0 - 15.5 dB States 3

16.0 - 31.5 dB States 3

2.2 < 3.8 GHz

1 MHz - 2.2 GHz

2.2 - 4.0 GHz

0.7

1.2

dBm

Input IP3 1

Two-tone inputs +18 dBm

1 MHz - 2.2 GHz

2.2 - 4.0 GHz

dBm

Return Loss

Switching Speed

50% of control voltage to

90% of final attenuation level

DC - 2.2 GHz

2.2 - 4.0 GHz

μ s

Notes: 1.

Device Linearity will begin to degrade below 5 MHz.

Note Absolute Maximum in Table 4.

See Figures 12 and 13 for typical attenuation error.

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

Page 1 of 9

Peregrine products are protected under one or more of the following U.S. Patents: http://patents.psemi.com

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