SKY77149_06 SKYWORKS [Skyworks Solutions Inc.], SKY77149_06 Datasheet

SKY77149_06

Manufacturer Part Number

SKY77149_06

Description

PA Module for CDMA / PCS (1850-1910 MHz)

Manufacturer

SKYWORKS [Skyworks Solutions Inc.]

Datasheet

1.SKY77149_06.pdf (13 pages)

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DATA SHEET

SKY77149 PA Module for CDMA / PCS (1850–1910 MHz)

Applications

• Personal Communications

• Wireless Local Loop (WLL)

Features

• Low voltage positive bias

• Low VREF

• Low IREF

• Good linearity

• High efficiency

• Large dynamic range

• 8-pin package

• Power down control

• Dynamic bias control

• InGaP

• IS95/CDMA2000/EVDO

• Full U.S. PCS coverage

Services (PCS)

supply

- 3.2 V to 4.2 V

- 2.85 V, nominal

- less than 1 mA

- 3 x 3 x 1.2 mm

Skyworks offers lead

(Pb)-free "environmentally

friendly" packaging

that is RoHS compliant

(European Parliament

for the Restriction of

Hazardous Substances).

103062B • Skyworks Proprietary and Confidential Information. • Products and product information are subject to change without notice. • November 6, 2006

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

The SKY77149 System Smart™ Power Amplifier Module (PAM) is a fully matched 8-pin surface

mount module developed for Code Division Multiple Access (CDMA) / Personal Communications

Service (PCS) and Wireless Local Loop (WLL) applications. This small and efficient module packs full

1850–1910 MHz bandwidth coverage into a single compact package. The SKY77149 meets the

stringent spectral linearity requirements of Code Division Multiple Access (CDMA) PCS transmission,

with high power added efficiency for power output of up to 28 dBm. A low current pin (VCONT) is

provided to improve efficiency for the low RF power range of operation.

The single Gallium Arsenide (GaAs) Microwave Monolithic Integrated Circuit (MMIC) contains all active

circuitry in the module. The MMIC contains on-board bias circuitry, as well as input and interstage

matching circuits. The output match is realized off-chip within the module package to optimize

efficiency and power performance into a 50-ohm load. This device is manufactured with Skyworks’

GaAs Heterojunction Bipolar Transistor (HBT) process that provides for all positive voltage DC supply

operation while maintaining high efficiency and good linearity. Primary bias to the SKY77149 is

supplied directly from a three-cell Ni-Cd, a single-cell Li-Ion, or other suitable battery with an output

in the 3.2 to 4.2 volt range. Power down is accomplished by setting the voltage on the low current

reference pin to zero volts. No external supply side switch is needed as typical “off” leakage is a few

microamperes with full primary voltage supplied from the battery.

GND (7, 8)

VCONT (2)

RF_IN (3)

VCC2 (5)

VCC1 (4)

VREF (1)

Stage Bias

Match

Input

Driver

Figure 1. Functional Block Diagram

Stage Bias

Inter-Stage

Power

Match

MMIC

Output

MODULE

Match

(6) RF_OUT

103062_001

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SKY77149_06 Summary of contents

Page 1

DATA SHEET SKY77149 PA Module for CDMA / PCS (1850–1910 MHz) Applications The SKY77149 System Smart™ Power Amplifier Module (PAM fully matched 8-pin surface • Personal Communications mount module developed for Code Division Multiple Access (CDMA) / Personal ...

Page 2

DATA SHEET • SKY77149 Electrical Specifications The following tables list the electrical characteristics of the SKY77149 Power Amplifier. Table 1 lists the absolute maximum ratings, while Table 2 shows the recommended operating Parameter RF Input Power Supply Voltage Reference Voltage ...

Page 3

PA MODULE FOR CDMA / PCS (1850–1910 MHz) Table 4. Electrical Specifications for CDMA Nominal Operating Conditions Characteristics Gain conditions Gain Sensitivity Power Added Efficiency for Optimal VCONT Setting (VCC = 3.4 V) Total Supply current for Optimal VCONT Setting ...

Page 4

DATA SHEET • SKY77149 Characterization Data The following graphs illustrate the characteristics of a typical SKY77149 power amplifier designed for operation in the cellular frequency band (824–849 MHz). This amplifier was selected by characterizing a group of devices and then ...

Page 5

PA MODULE FOR CDMA / PCS (1850–1910 MHz) 800 700 600 500 400 V CONT 300 200 100 CONT Legend 1850 ...

Page 6

DATA SHEET • SKY77149 1.25 V CONT Figure 5. Adjacent Channel Power Ratio 1 vs. Output Power 85 V CONT ...

Page 7

PA MODULE FOR CDMA / PCS (1850–1910 MHz CONT CONT Legend ...

Page 8

DATA SHEET • SKY77149 Evaluation Board Description The evaluation board is a platform for testing and interfacing design circuitry. To accommodate the interface testing of the SKY77149, the evaluation board schematic and diagrams are VREF 1000 pF VCONT 1000 pF ...

Page 9

PA MODULE FOR CDMA / PCS (1850–1910 MHz) Package Dimensions and Pin Descriptions The SKY77149 is a multi-layer laminate base, overmold encapsulated modular package designed for surface mount solder attachment to a printed circuit board. Figure 11 drawing of the ...

Page 10

DATA SHEET • SKY77149 PCB SYMBOL FOR 3.0 x 3.0 mm PACKAGE CX77149 & CX77154 SPECIFIC 1.2 0.6 0.4 0.8 TYP 3.2 STENCIL APERTURE TOP VIEW APPROACH 1 COMMON GROUND 0.6 PAD 0.4 0.8 TYP 0.25 3.2 METALLIZATION TOP VIEW ...

Page 11

PA MODULE FOR CDMA / PCS (1850–1910 MHz) VREF 1 VCONT 2 RF_IN 3 4 GROUND PAD VCC1 Pad layout as seen from top view looking through the package. GROUND PAD is package underside. Figure 13. SKY77149 Pin Names and ...

Page 12

DATA SHEET • SKY77149 To avoid ESD damage, both latent and visible very important that the product assembly and test areas follow the Class-1 ESD • Personnel Grounding - Wrist Straps - Conductive Smocks, Gloves and Finger Cots ...

Page 13

Ordering Information Manufacturing Part Model Number Number SKY77149 SKY77149 Revision History Revision Level A B References Application Note: PCB Design and SMT Assembly/Rework, Document Number 101752. Application Note: Tape and Reel Information – RF Modules, Document Number 101568 Standard SMT ...

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