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PDF SKY77171 Data sheet ( Hoja de datos )
| Número de pieza | SKY77171 | |
| Descripción | Power Amplifier Module | |
| Fabricantes | Skyworks Solutions | |
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PRELIMINARY DATA SHEET
SKY77171 AutoSmart™ Power Amplifier Module for WCDMA
(1920-1980 MHz)
Applications
• WCDMA handsets
Features
• Low voltage positive bias
supply
- 3.2 V to 4.2 V
• Low VREF
- 2.85 V, nominal
• Low IREF
- Less than 1 mA
• Supports low collector
voltage operation
• Good linearity
• High efficiency
• Large dynamic range
• 10-pad package
- 4 x 4 x 1.15 mm
• Power down control
• InGaP
Description
The SKY77171 AutoSmart™ Power Amplifier Module (PAM) is a fully matched 10-pad surface mount
module developed for Wideband Code Division Multiple Access (WCDMA) handsets. This small and
efficient module packs full 1920–1980 MHz bandwidth coverage into a single compact package. The
SKY77171 meets the stringent spectral linearity requirements of WCDMA transmission with high
power added efficiency for power output of up to 28 dBm.
AutoSmartTM power amplifier technology internally adjusts the RF transistor bias level throughout the
dynamic operating range to minimize battery current consumption and ensure sufficient linear
performance to meet WCDMA system requirements. The result is a significant savings in average
battery current without the complications of a system-supplied mode function signal or analog bias
control. AutoSmart™ response time is more than adequate for RF access probe and discontinuous
transmission 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. Output match into a 50-ohm load is realized off-chip within the module package to
optimize efficiency and power performance.
The SKY77171 AutoSmart™ PAM 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 SKY77171 is supplied directly from a three-cell
nickel cadmium, a single-cell lithium 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.
Skyworks offers lead
(Pb)-free "environmentally
friendly" packaging
that is RoHS compliant
(European Parliament
for the Restriction of
Hazardous Substances).
VCC (10)
VREF (5)
VCC (1)
RF_IN (2)
GND
(3,6,7,9)
Driver
Stage Bias
Input
Match
MODULE
Feedback
Control Circuit
Power
Stage Bias
DA
Inter-Stage
Match
PA
Output
Match
(8) RF_OUT
Figure 1. Functional Block Diagram
200014_001
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
200014P2 • Skyworks Proprietary and Confidential information. • Products and product information are subject to change without notice. • October 14, 2005
1
1 page  
PA MODULE FOR WCDMA (1920-1980 MHZ)
www.DataSheet4U.com
Package Dimensions and Pad Descriptions
The SKY77171 is a multi-layer laminate base, overmold
encapsulated modular package designed for surface mount solder
attachment to a printed circuit board. Figure 4 is a mechanical
drawing of the pad layout for this package. Figure 6 shows each
SKY77171 • PRELIMINARY DATA SHEET
pad function and the pad numbering convention, which starts
with pad 1 in the upper left and increments counter-clockwise
around the package. Figure 7 illustrates typical case markings.
2X 0.575
0.1
METAL PAD EDGES
0.05 A B C
PIN 1 INDICATOR
4
B
C
0.1
2X 0.4
2X 0.4
SOLDER MASK EDGES
0.1 A B C
DETAIL A
PAD
SCALE: 2X
1X THIS ROTATION
1X ROTATED 90˚ CW
1X ROTATED 90˚ CCW
1X ROTATED 180˚
METAL PAD EDGES
0.05 A B C
0.55
0.1
0.575
SOLDER MASK EDGES
0.1 A B C
DETAIL B
PAD
SCALE: 2X
3X THIS ROTATION
3X ROTATED 180˚
2X 0.925
TOP SIDE
4X 1.7
4X 0.85
2X 1.825
4
0.1 A B C
TOP VIEW
(1.225)
(Ø0.3)
SOLDER MASK OPENING
(Ø0.15)
METAL PAD –
PIN 1 INDICATOR
(1.275)
B
1.15 ±0.1
SIDE VIEW
A
0.1
4X R0.2
A
SOLDER MASK OPENING
0.15 A B C
BOTTOM VIEW
NOTES: Unless otherwise specified
1. ALL DIMENSIONS ARE IN MILLIMETERS.
2. DIMENSIONING AND TOLERANCING IN ACCORDANCE WITH ASME Y14.5M–1994.
3. SEE APPLICABLE BONDING DIAGRAM AND DEVICE ASSEMBLY DRAWING FOR DIE AND COMPONENT PLACEMENT.
4. PADS ARE METAL DEFINED; THE CENTER PAD IS SOLDER MASK DEFINED.
Figure 4. SKY77171 Package Drawing
200014_004
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
200014P2 • Skyworks Proprietary and Confidential information. • Products and product information are subject to change without notice. • October 14, 2005
5
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet SKY77171.PDF ] | |
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