Datasheet > 4305-00

4305-00

更新时间： 2022-09-19 10:45:21

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描述
50 Ω RF Digital Attenuator 5-bit, 15.5 dB, DC - 4.0 GHz

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Product Specification

PE4305

50 Ω RF Digital Attenuator

5-bit, 15.5 dB, DC – 4.0 GHz

Product Description

Features

The PE4305 is a high linearity, 5-bit RF Digital Step Attenuator

(DSA) covering a 15.5 dB attenuation range in 0.5 dB steps,

and is pin compatible with the PE430x series. This 50-ohm RF

DSA provides both 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

PE4305 exhibits very low insertion loss and low power

consumption. This functionality is delivered in a 4x4 mm QFN

footprint.

• Attenuation: 0.5 dB steps to 15.5 dB

• Flexible parallel and serial programming

interfaces

• Latched or direct mode

• 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

The PE4305 is manufactured in Peregrine’s patented Ultra

Thin Silicon (UTSi®) CMOS process, offering the performance

of GaAs with the economy and integration of conventional

CMOS.

• 50 Ω impedance

• Pin compatible with PE430x series

• Packaged in a 20 Lead 4x4 mm QFN

Figure 1. Functional Schematic Diagram

Figure 2. Package Type

4x4mm -20 Lead QFN

Switched Attenuator Array

RF Input

RF Output

Parallel Control

Serial Control

Control Logic Interface

Power-Up Control

Table 1. Electrical Specifications @ +25°C, V_DD= 3.0 V

Parameter

Test Conditions

Frequency

Minimum

Typical

Maximum

Units

MHz

Operation Frequency

Insertion Loss²

4000

2.25

DC - 2.2 GHz

1.5

Any Bit or Bit

Combination

±(0.25 + 3% of atten setting)

not to exceed ± 0.4 dB

Attenuation Accuracy

1 dB Compression³

Input IP3^{1, 2}

1 MHz - 2.2 GHz

DC - 2.2 GHz

dBm

Two-tone inputs

+18 dBm

dBm

Return Loss

50% control to 0.5 dB

of final value

Switching Speed

µs

Notes: 1. Device Linearity will begin to degrade below 1Mhz

2. See Max input rating in Table 2 & Figures on Pages 2 to 4 for data across frequency.

3. Note Absolute Maximum in Table 3.

Document No. 70/0159~02C │ www.psemi.com

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