Datasheet > SKY77500

SKY77500

更新时间： 2024-11-21 03:31:47

品牌	Logo	应用领域
思佳讯 - SKYWORKS		GSM
页数	文件大小	规格书
20页	1109K
描述
SKY77500 iPAC⑩ FEM for Quad-Band GSM / GPRS

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SKY77500 数据手册

DATA SHEET

SKY77500 iPAC™ FEM for Quad-Band GSM / GPRS

Applications

Description

The SKY77500 is a transmit and receive Front End Module (FEM) designed in a low profile (1.2 mm),

compact form factor for quad-band cellular handsets comprising GSM850/900, DCS1800, and

PCS1900 operation—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.

• Quad-band cellular

handsets comprised of

- Class 4 GSM850/900

- Class 1 DCS1800

PCS1900

- Class 12 GPRS multi-slot

operation

The module consists of separate GSM850/900 and DCS1800/PCS1900 PA blocks, internal circuitry for

matching to 50 Ω input and output impedances, TX harmonics filtering, high linearity and low

insertion loss PHEMT RF switches, diplexer, and an integrated power amplifier control (iPAC™)

function that utilizes an internal current-sense resistor. A custom silicon integrated circuit contains

decoder circuitry to control the RF switches while providing a low current external control interface.

Features

• High efficiency

- GSM850 43%

- GSM900 43%

- DCS 40%

Two Heterojunction Bipolar Transistor (HBT) PA blocks are fabricated onto a single Gallium Arsenide

(GaAs) die; one supports the GSM850/900 bands and the other supports the DCS1800 and PCS1900

bands. Both PA blocks share common power supply pins to distribute current. The output of each PA

block and the outputs to the four receive pins are connected to the antenna pin through PHEMT RF

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

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

- PCS 40%

• Internal ICC sense-resistor

for iPAC

Band selection and control of transmit and receive RF signal flows are performed by use of three

external control pins. See Figure 1 shown below. Two band select pins select GSM, DCS or PCS

modes of operation and the TX_RX pin selects the receive or transmit mode of the respective RF

switch (TX = logic 1). Proper timing of the logic on this pin, PAC Enable, and Analog Power Control

(APC) allow for high isolation between the antenna and TX-VCO while the VCO is being tuned prior to

the transmit burst. The PAC Enable input allows initial turn-on of the PAC circuitry to minimize battery

drain.

• Closed loop iPAC or open

loop operation with external

PAC circuit

• Input/Output matching 50

ohms internal (with DC

blocking)

• 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

• Small outline

- 8 mm x 10 mm

• Low profile

- 1.2 mm maximum

• Low APC current:

- 20 µA

• Gold plated, lead free

contacts

Figure 1. Functional Block Diagram

• High impedance control

inputs, 15 µA, typical

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

103146A • Skyworks Proprietary information. • Products and product information are subject to change without notice. • May 16, 2005

12 3 4 5 6 7...20

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与SKY77500相关器件

型号	品牌	获取价格	描述	数据表
SKY77517	SKYWORKS	获取价格	RF Front End Circuit, BICMOS, 6 X 8 MM, 1.20 MM HEIGHT, ROHS COMPLIANT, PLASTIC PACKAGE
SKY77517-21	SKYWORKS	获取价格	RF Front End Circuit, ROHS COMPLIANT, PACKAGE-20
SKY77518-11	SKYWORKS	获取价格	RF Front End Circuit, BICMOS, PXMA20, 6 X 8 MM, 1.10 MM HEIGHT, ROHS COMPLIANT, PLASTIC, M
SKY77518-11A	SKYWORKS	获取价格	RF Front End Circuit, BICMOS, PXMA20, 6 X 8 MM, 1.10 MM HEIGHT, ROHS COMPLIANT, PLASTIC, M
SKY77518-21	SKYWORKS	获取价格	RF Front End Circuit, BICMOS, 6 X 8 MM, 1.20 MM HEIGHT, ROHS COMPLIANT, MCM-20
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)

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