Datasheet > 4256-51

4256-51

更新时间： 2022-09-19 10:21:03

品牌	Logo	应用领域
PSEMI		开关有线电视光电二极管
页数	文件大小	规格书
8页	348K
描述
75 Ω SPDT CATV UltraCMOS? Switch DC - 3.0 GHz

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Product Specification

PE4256

75 Ω SPDT CATV UltraCMOS™ Switch

DC - 3.0 GHz

Product Description

Features

The PE4256 is an UltraCMOS™ Switch designed for CATV

applications, covering a broad frequency range from 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 CATV application, the PE4256

provides for a cost effective and manufacturable solution when

compared to mechanical relays.

• 75 Ω characteristic impedance

• Integrated 75 Ω 0.25 watt terminations

• CTB performance of -90 dBc

• High isolation 65 dB at 1000 MHz

• Low insertion loss: typically 0.5 dB at

5 MHz, 0.9 dB at 1000 MHz

• High input IP3: >50 dBm

• CMOS two-pin control

The PE4256 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

• Unique all off terminated mode

• 4x4 mm QFN package

Figure 1. Functional Diagram

RFC

Figure 2. Package Type

20-lead 4x4 mm QFN

RF1

RF2

CMOS

Control

Driver

C1 C2

Table 1. Electrical Specifications @ +25 °C, V_DD= +3 V (Z_S= Z_L= 75 Ω)

Parameter

Condition

Minimum

Typical

Maximum

Units

Operating Frequency¹

3000

MHz

5 MHz – 250 MHz

0.5

0.8

0.9

1.1

0.6

0.95

1.1

250 MHz – 750 MHz

750 MHz – 1000 MHz

1000 MHz – 2200 MHz

Insertion Loss

Isolation

1.3

5 MHz – 250 MHz

250 MHz – 750 MHz

750 MHz – 1000 MHz

1000 MHz – 2200 MHz

Input IP2²

Input IP3²

Input 1dB Compression²

5 MHz - 1000 MHz

1000 MHz

dBm

77 & 110 channels;

CTB / CSO

-90

dBc

Power Out = 44 dBmV

Switching Time

Video Feedthrough³

50% CTRL to 10/90% RF

5 MHz - 1000 MHz

µs

mV_pp

Notes:

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

2. Measured in a 50 ꢀ system.

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

Document No. 70-0144-01 │ www.psemi.com

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