Datasheet > CX77141

CX77141

更新时间： 2024-02-22 14:32:22

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CX77141: Product Summary\|PA Modules for WCDMA Handsets

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PRODUCT SUMMARY

CX77141: PA Module for WCDMA (1920–1980 MHz)

APPLICATIONS

DESCRIPTION

The CX77141 Power Amplifier Module for Wideband Code Division Multiple Access

(WCDMA) is packaged in a 50 ohms matched, 8-pin, surface mount module for 1920–1980

MHz handset applications. Quiescent current can be adjusted by changing the voltage on

the VCONT pin to achieve higher power-added efficiency over the entire output power range

up to 27.0 dBm while simultaneously maintaining the high linearity requirements of a

WCDMA handset amplifier.

• WCDMA handset

FEATURES

• Low voltage positive bias

3.2 V to 4.2 V

• Dynamic control

0.4 V to 2.4 V

• No V^REFrequired

• Optimized efficiency over full power

ranges

• 8-pin package

6 mm x 6 mm x 1.5 mm

• Digital CMOS enable pin

Manufactured with Skyworks’ Heterojunction Bipolar Transistor (HBT) process, a single

Gallium Arsenide (GaAs) Monolithic Microwave Integrated Circuit (MMIC) contains all the

active RF, interstage, and input matching circuits within the module. A CMOS IC controls the

GaAs MMIC by supplying integrated bias controls for the driver and the final amplifier stages

based on the voltage applied to the external pin, VCONT. An enable circuit will power-down

the module when the voltage on the low current VENABLE pin is set low. The output match,

realized within the module package, optimizes efficiency/linearity at maximum rated output

power.

The CX77141 amplifier does not require an external reference voltage. Primary bias to the

CX77141 can be supplied directly from a three-cell nickel cadmium battery, a single-cell

lithium ion battery, or other suitable batteries with output voltages of 3.2 to 4.2 volts. No

external supply-side switch is needed during power down since the typical "off" leakage is

a few microamperes at rated handset battery voltages.

VCONT

(4)

VCC_BIAS

(8)

VENABLE

(3)

VCC2

(5)

VCC1

(1)

CMOS Controller

Inter

Stage

Match

Input

Match

Output

Match

RF IN (2)

(7) RF OUT

MODULE

(6)

GND

(6)

GND

Figure 1. Functional Block Diagram

Skyworks Solutions, Inc., Proprietary and Confidential

103028P2

[781] 376-7000 • FAX [781] 376-3100 • SALES@SKYWORKSINC.COM • WWW.SKYWORKSINC.COM

APRIL 1, 2003

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