Datasheet > 4257

4257

更新时间： 2022-09-19 10:21:07

品牌	Logo	应用领域
PSEMI		开关射频开关光电二极管
页数	文件大小	规格书
7页	222K
描述
50 ?SPDT Absorptive UltraCMOS DC - 3.0 GHz RF Switch

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Product Specification

PE4257

50 ΩSPDT Absorptive UltraCMOS™

DC – 3.0 GHz RF Switch

Product Description

The PE4257 is a high-isolation UltraCMOS™ Switch designed

for wireless applications, covering a broad frequency range

from near DC up to 3000 MHz. This single-supply SPDT

switch integrates a two-pin CMOS control interface. It also

provides low insertion loss with extremely low bias

requirements while operating on a single 3-volt supply. In a

typical wireless application, the PE4257 provides

unprecedented isolation and integration.

Features

• 50 Ω characteristic impedance

• Integrated 50 Ω 0.25 watt terminations

• High input IP3 > +55 dBm

• High isolation 64 dB at 1000 MHz

• Low insertion loss: typically 0.75 dB

at 1000 MHz and 0.95 dB at 2000 MHz

• LV CMOS two-pin control

The PE4257 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.

• Single +3 volt supply operation

• Low current consumption: 8 µA

Figure 1. Functional Diagram

Figure 2. Package Type

4x4mm 20 Lead QFN

RFC

RF1

RF2

CMOS

Control

Driver

CTRL1 CTRL2

Table 1. Electrical Specifications @ +25 °C, V_DD= 3.0 V (Z_S= Z_L= 50 Ω)

Parameter

Condition

Minimum

Typical

Maximum

Units

Operating Frequency¹

3000

MHz

1000 MHz

2000 MHz

3000 MHz

0.75

0.95

1.2

0.95

1.15

1.4

Insertion Loss

1000 MHz

2000 MHz

3000 MHz

Isolation Input to Output

Isolation Output to Output

1000 MHz

2000 MHz

3000 MHz

Input IP2

5 MHz - 1000 MHz

1000 MHz

dBm

µs

Input IP3

Input 1dB Compression²

Switching Time

Video Feedthrough³

50% CTRL to 10 / 90 RF

5 MHz - 1000 MHz

mV_pp

Notes: 1. Device linearity will begin to degrade below 1 MHz.

2. Note Absolute Maximum ratings in Table 3.

3. Measured with a 1 ns risetime, 0/3 V pulse and 500 MHz bandwidth

Document No. 70-0166-02 │ www.psemi.com

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