Datasheet > SKY77518-21

SKY77518-21

更新时间： 2024-11-21 21:20:03

品牌	Logo	应用领域
思佳讯 - SKYWORKS		电信信息通信管理电信集成电路
页数	文件大小	规格书
14页	386K
描述
RF Front End Circuit, BICMOS, 6 X 8 MM, 1.20 MM HEIGHT, ROHS COMPLIANT, MCM-20

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SKY77518-21 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Obsolete	零件包装代码：	DMA
包装说明：	,	针数：	20
Reach Compliance Code：	unknown	HTS代码：	8542.39.00.01
风险等级：	5.79	JESD-30 代码：	R-XDMA-N20
湿度敏感等级：	3	功能数量：	1
端子数量：	20	最高工作温度：	85 °C
最低工作温度：	-20 °C	封装主体材料：	UNSPECIFIED
封装形状：	RECTANGULAR	封装形式：	MICROELECTRONIC ASSEMBLY
峰值回流温度（摄氏度）：	250	认证状态：	Not Qualified
标称供电电压：	3.3 V	表面贴装：	NO
技术：	BICMOS	电信集成电路类型：	RF FRONT END CIRCUIT
温度等级：	OTHER	端子形式：	NO LEAD
端子位置：	DUAL	处于峰值回流温度下的最长时间：	40
Base Number Matches：	1

SKY77518-21 数据手册

DATA SHEET

SKY77518-21 TX–RX iPAC^™FEM for Dual-Band GSM/GPRS

Applications

Description

The SKY77518-21 is a transmit and receive front-end module (FEM) with Integrated Power

Amplifier Control (iPAC^™) for dual-band cellular handsets comprising GSM900 and DCS1800

operation. Designed in a low profile, compact form factor, the SKY77518-21 offers a complete

Transmit VCO-to-Antenna and Antenna-to-Receive SAW filter solution. The FEM also supports

Class 12 General Packet Radio Service (GPRS) multi-slot operation.

• Dual-band cellular handsets

encompassing

- Class 4 GSM900

- DCS1800

- Class 12 GPRS multi-slot

operation

The module consists of a GSM900 PA block and a DCS1800 PA block, impedance-matching

circuitry for 50 Ω input and output impedances, TX harmonics filtering, high linearity and low

insertion loss PHEMT RF switches, diplexer and a Power Amplifier Control (PAC) block with

internal current sense resistor. A custom BiCMOS integrated circuit provides the internal PAC

function and decoder circuitry to control the RF switches. The two Heterojunction Bipolar

Transistor (HBT) PA blocks are fabricated onto a single Gallium Arsenide (GaAs) die. One PA

block supports the GSM900 band and the other PA block supports the DCS1800 band. Both PA

blocks share common power supply pads to distribute current. The output of each PA block

and the outputs to the two receive pads are connected to the antenna pad through PHEMT RF

switches and a diplexer. The GaAs die, PHEMT die, Silicon (Si) die and passive components are

mounted on a multi-layer laminate substrate. The assembly is encapsulated with plastic

overmold.

Features

• High efficiency

- GSM900 48%

- DCS 41%

• Low transmit supply current

- GSM900 1.26 A

- DCS1800 0.9 A

• Internal ICC sense resistor for iPAC

• Closed loop iPAC

Band selection and control of transmit and receive modes are performed using two external

control pads. Refer to the functional block diagram in Figure 1 below. The band select pad (BS)

selects between GSM and DCS modes of operation. The transmit enable (TX_EN) pad controls

receive or transmit mode of the respective RF switch (TX = logic 1). Proper timing between

transmit enable (TX_EN) and Analog Power Control (VRAMP) allows for high isolation between

the antenna and TX-VCO while the VCO is being tuned prior to the transmit burst.

• 50 Ω matched Input/Output

• TX–VCO-to-antenna and antenna-

to-RX-SAW filter RF interface

• TX harmonics below –33 dBm

• PHEMT RF switches afford high

linearity, low insertion loss, and

less than 20 μA supply current in

receive modes

The SKY77518-21 is compatible with logic levels from 1.2 V to VCC for BS and TX_EN pads,

depending on the level applied to the VLOGIC pad. This feature provides additional flexibility for

the designer in the selection of FEM interface control logic.

• Small outline: 6 mm x 8 mm

• Low profile: 1.2 mm

• Compatible with multiple logic

families

• Low APC current: 25 μA

Figure 1. Functional Block Diagram

Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com

200786A • Skyworks Proprietary and Confidential Information • Products and Product Information are Subject to Change Without Notice. • November 6, 2007

12 3 4 5 6 7...14

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与SKY77518-21相关器件

型号	品牌	获取价格	描述	数据表
SKY77519	SKYWORKS	获取价格	RF Front End Circuit, CMOS, PXMA28, 6 X 6 MM, 1.10 MM HEIGHT, ROHS COMPLIANT, PLASTIC PACK
SKY77527-21	SKYWORKS	获取价格	Tx Front-End Module for Quad-Band GSM / EDGE
SKY77528	SKYWORKS	获取价格	Tx Front-End Module for Quad-Band GSM / EDGE
SKY77529	SKYWORKS	获取价格	Tx Front-End Module for Quad-Band GSM / EDGE
SKY77542	SKYWORKS	获取价格	Tx - Rx iPAC- FEM for Dual-Band GSM/GPRS (880 - 915 MHz), (1710 - 1785 MHz)
SKY77543	SKYWORKS	获取价格	Tx - Rx iPAC FEM for Dual-Band GSM / GPRS (824 - 849 MHz), (1850 - 1910 MHz)
SKY77546	SKYWORKS	获取价格	Tx - Rx Front-End Module for Dual-Band GSM / GPRS / EDGE
SKY77547	SKYWORKS	获取价格	Tx-Rx iPAC Front-End Module - Quad-Band GSM/GPRS
SKY77548	SKYWORKS	获取价格	Tx-Rx iPAC™ Front-End Module for Dual-Band GS
SKY77549	SKYWORKS	获取价格	RF and Baseband Circuit, 6 X 6 MM, 0.90 MM HEIGHT, GREEN, PACKAGE-28

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