SKY13421-486LF屬于RF/IF射頻/中頻RFID的射頻開關(guān)。由美國思佳訊公司制造生產(chǎn)的SKY13421-486LF射頻開關(guān)射頻開關(guān)產(chǎn)品是用于在多個可用信號路徑之間路由 RF、IF 或微波信號的器件。示例應(yīng)用包括多天線（分集）接收器中的天線選擇、多模式系統(tǒng)中發(fā)射-接收路徑的選擇，或在發(fā)射和接收信號鏈之間切換天線。

Applications

? GSM, DCS, PCS, CDMA, WCDMA, and TD-SCDMA differential

filter switching.

特性 Features

? Broadband frequency range: 0.1 to 3.0 GHz

? Single positive voltage control: 1.3 V to 5.0 V

? Low insertion loss: 0.3 dB typical @ 1 GHz; 0.4 typical @ 2 GHz

? High isolation: 28 dB typical @ 1 GHz; 22 dB typical @ 2 GHz

? High P0.2dB

? Low phase error: 6 degrees typical @ 2 GHz

? Ultra-miniature, QFN (14-pin, 1.6 x 1.6 mm) package (MSL1,

260 ?C per JEDEC J-STD-020)

描述 Description

The SKY13421-486LF is a pHEMT GaAs double-pole, doublethrow

(DPxDT) switch designed for cellular infrastructure band

switching applications. This device is a paired DPDT switch,

controlled synchronously, that includes two single-pole, doublethrow

(SPDT) switches with RF lines that cross inside the chip.

The internal crossed switch arrangement is designed to switch

balanced RF filters.

Switching is controlled by a single control voltage. Depending on

the logic voltage level applied to the control pin (VCTL), the RFCA

and RFCB pins are each connected to one of two switched RF

outputs (RF1A, RF1B, RF2A, or RF2B) using a low insertion loss

path, while maintaining a high isolation path to the alternate port.

DC blocking capacitors are required on all RF ports.

The switch is manufactured in a compact, 1.6 x 1.6 mm, 14-pin

exposed pad plastic Quad Flat No-Lead (QFN) package.

A functional block diagram is shown in Figure 1. The pin

configuration and package are shown in Figure 2. Signal pin

assignments and functional pin descriptions are provided in

Table 1.