Datasheet > SKY77331

SKY77331

更新时间： 2024-11-18 03:12:39

品牌	Logo	应用领域
思佳讯 - SKYWORKS		放大器功率放大器 GSM
页数	文件大小	规格书
2页	229K
描述
Power Amplifier Module with Integrated Coupler for Quad-Band GSM / EDGE

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SKY77331 数据手册

PRELIMINARY PRODUCT SUMMARY

SKY77331 Power Amplifier Module with Integrated Coupler

for Quad-Band GSM / EDGE

Applications

Description

• Quad-band cellular

handsets:

- Class 4 GSM850/900

- DCS1800

The SKY77331 Power Amplifier Module (PAM) is designed in a compact form factor for quad-band

cellular handsets comprising GSM850/900, DCS1800, PCS1900, and supports Class 12 General

Packet Radio Service (GPRS) multi-slot operation.

The module consists of a GSM850/900 PA block and a DCS1800/PCS1900 PA block, impedance-

matching circuitry for 50 Ω input and output impedances, a Power Amplifier Control (PAC) block, and

an Integrated Coupler. A custom CMOS IC provides the internal PAC function and interface circuitry.

- PCS1900

- Class 12 GPRS multi-slot

operation

- EDGE polar modulation

Two separate Heterojunction Bipolar Transistor (HBT) PA blocks are fabricated onto InGaP/GaAs die;

one supports the GSM850/900 bands, the other supports the DCS1800 and PCS1900 bands. Both PA

blocks share common power supply pads to distribute current. The GaAs die, the silicon die, and the

passive components are mounted on a multi-layer laminate substrate with the entire assembly

encapsulated with plastic overmold.

Features

• High efficiency:

- GSM850, 55% (Peak)

- GSM900, 55% (Peak)

- DCS, 52% (Peak)

- PCS, 52% (Peak)

RF input and output ports are internally matched to 50 Ω to reduce the number of external

components for a quad-band design. Extremely low leakage current (10 µA, maximum) of the dual PA

module maximizes handset standby time. The SKY77331 also contains band select switching circuitry

to select GSM (logic 0) and DCS/PCS (logic 1) as determined from the Band Select (BS) signal. In the

functional block diagram (Figure 1), the BS pad selects the PA output (DCS/PCS_OUT or GSM_OUT)

while the Power Control (VPC) controls the level of output power.

• Integrated coupler

• Wideband envelope control

path

• Input/output matching

• 16-pad MCM

The integrated power amplifier control (PAC) function provides envelope amplitude control by reducing

sensitivity to input drive, temperature, power supply, and process variation. The Enable input signal

(pad 1) allows initial turn-on of the PAC circuitry to minimize battery drain.

• Small outline

- 6 x 8 mm

• Low profile

- 1.2 mm

• Gold-plated, lead-free

contacts

Figure 1. SKY77331 Functional Block Diagram

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

200290P2 • Skyworks Proprietary and Confidential Information. • Products and product information subject to change without notice. • June 14, 2005

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与SKY77331相关器件

型号	品牌	获取价格	描述	数据表
SKY77336	SKYWORKS	获取价格	Power Amplifier Module for Quad-Band GSM/GPRS/EDGE
SKY77340	SKYWORKS	获取价格	PA Module for Quad-Band GSM / EDGE
SKY77344	SKYWORKS	获取价格	PA Module for Quad-Band GSM / EDGE
SKY77346	SKYWORKS	获取价格	iPAC? PA Module for Quad-Band GSM / GPRS
SKY77350	SKYWORKS	获取价格	Power Amplifier Module for Quad-Band
SKY77351-13	SKYWORKS	获取价格	SKY77351-13 POWER AMPLIFIER MODULE FOR QUAD-BAND GSM / GPRS / EDGE
SKY77354	SKYWORKS	获取价格	SKY77354 POWER AMPLIFIER MODULE FOR QUAD-BAND GSM / GPRS / EDGE
SKY77365	SKYWORKS	获取价格	Power Amplifier Module for Quad-Band GSM / GPRS / EDGE
SKY77418	SKYWORKS	获取价格	LIPA Module for CDMA / PCS (1850-1910 MHz)
SKY77441	SKYWORKS	获取价格	Multi-Mode / Multi-Band PA Module

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