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PDF SKY77418 Data sheet ( Hoja de datos )
| Número de pieza | SKY77418 | |
| Descripción | LIPA Module | |
| Fabricantes | Skyworks Solutions | |
| Logotipo |  |
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ADVANCE PRODUCT SUMMARY
SKY77418: LIPA® Module for CDMA / PCS (1850–1910 MHz)
Applications
• Personal Communications
Services (PCS)
• Wireless local loop (WLL)
Features
• Low voltage positive bias
- 3.2 V to 4.2 V
• Low VREF
- 2.85 V, nominal
• Supports low collector
voltage operation
• Good linearity
• High efficiency at all power
levels
- 20% at 16 dBm
• Large dynamic range
• 16-pad package
- 4 x 4 x 1.5 mm
• Power down control
• InGaP
• Digital VENABLE
Skyworks offers lead
(Pb)-free "environmentally
friendly" packaging
that is RoHS compliant
(European Parliament
for the Restriction of
Hazardous Substances).
Description
The SKY77418 Load Insensitive Power Amplifier (LIPA™) module is a fully matched 16-pad surface
mount module developed for Code Division Multiple Access (CDMA) applications. This small and
efficient power amplifier packs full coverage of the 1850–1910 MHz bandwidth into a single compact
package.
Because of high efficiencies attained throughout the entire power range, the SKY77418 delivers
unsurpassed talk-time advantages. In addition, Skywork’s patented LIPA technology ensures that the
stringent linearity requirements are met, even with a load mismatch of 4:1.
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 Ω load. This device is manufactured with Skyworks’
InGaP 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 SKY77418 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 pad 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.
VMODE (1)
VENABLE (2)
VREF (5)
VBIAS (6)
RF IN (3)
VCC1 (7, 15)
VCC2 (9, 13)
MODULE
MMIC
Bias and Temperature
Compensation Circuit
Input
Match
DA
Inter-Stage
Match
PA
Output
Match
(11) RF OUT
GND (4, 8,
10, 12, 14)
Figure 1. Functional Block Diagram
200544_001
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
200544P1 • Skyworks Proprietary and Confidential Information. • Products and product Information are subject to change without notice. • May 17, 2006
1
1 page | ||
| Páginas | Total 2 Páginas | |
| PDF Descargar | [ Datasheet SKY77418.PDF ] | |
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