SKY12208-478LF-EVB屬于開(kāi)發(fā)板套件編程器的射頻評(píng)估開(kāi)發(fā)套件開(kāi)發(fā)板。由美國(guó)思佳訊公司制造生產(chǎn)的SKY12208-478LF-EVB射頻評(píng)估和開(kāi)發(fā)套件，開(kāi)發(fā)板本系列中的產(chǎn)品適用于在已知實(shí)施環(huán)境中，提供能訪問(wèn)射頻相關(guān)器件的功能或者有助于訪問(wèn)該功能。所含的焦點(diǎn)產(chǎn)品范圍從射頻信號(hào)鏈元器件（如放大器和檢測(cè)器）到模塊化收發(fā)器，以及不直接包含焦點(diǎn)產(chǎn)品的適配器硬件，但此類硬件可供方便地訪問(wèn)用戶單獨(dú)提供的特定射頻產(chǎn)品或系列。

Applications

? Transmit/receive and fail-safe switching in land mobile radios,

public safety radios, and military communication systems

特性 Features

? High power handling: 50 W CW, 300 W peak

? Low insertion loss: 0.3 dB typical

? Controlled with positive power supply

? High antenna to receive isolation: 45 dB typical

? Bias driver circuit available on request

? Small, QFN (16-pin, 4 x 4 mm) Pb-free package (MSL1, 260 ?C

per JEDEC J-STD-020)

描述 Description

The SKY12208-478LF is a high power handling, Single-Pole,

Double-Throw (SPDT) silicon PIN diode switch. The device can

cover two frequency bands, 0.02 to 0.70 GHz or 0.05 to 2.7 GHz,

by changing the value of an RF choke in the SMT bias network.

The different Evaluation Board components for each band are

noted in Table 10.

The SKY12208-478LF features low insertion loss, excellent power

handling, and superb linearity with low DC power consumption.

The device is well-suited for use as a high power transmit/receive

switch in a variety of telecommunication systems.

The device is provided in a 4 x 4 mm, 16-pin 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.