PRODUCT SUMMARY
SKY77704 Power Amplifier Module for CDMA / WCDMA /
HSDPA / HSUPA / HSPA
+
/ LTE – Band V (824–849 MHz)
Applications
•
WCDMA handsets
•
CDMA2000
•
EVDO
•
HSDPA
•
HSUPA
•
HSPA
+
•
LTE
Description
The SKY77704 Power Amplifier Module (PAM) is a fully matched 10-pad surface mount module
developed for Wideband Code Division Multiple Access (WCDMA) applications. This small and efficient
module packs full 824–849 MHz bandwidth coverage into a single compact package. Because of high
efficiencies attained throughout the entire power range, the SKY77704 delivers unsurpassed talk-time
advantages. The SKY77704 meets the stringent spectral linearity requirements of High Speed
Downlink Packet Access (HSDPA), High Speed Uplink Packet Access (HSUPA), and Long Term
Evolution (LTE) data transmission with high power added efficiency. A directional coupler is integrated
into the module thus eliminating the need for any external coupler.
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 SKY77704 PAM is manufactured with Skyworks’ InGaP GaAs Heterojunction Bipolar Transistor
(HBT) BiFET process that provides for all positive voltage DC supply operation while maintaining high
efficiency and good linearity. Primary bias to the SKY77704 is supplied directly from any 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. No
VREF voltage is required. Power down is accomplished by setting the voltage on VENABLE 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.
Features
•
Low voltage positive bias
supply 3.2 V to 4.2 V
•
Good linearity
•
High efficiency
-
40% @ 28.25 dBm
•
Large dynamic range
•
Small, low profile package
-
3 mm x 3 mm x 0.9 mm
-
10-pad configuration
•
Power down control
•
InGaP
•
Supports low collector
voltage operation
•
Digital Enable
•
No V
REF
required
•
CMOS compatible control
signals
•
Integrated Directional
Coupler
Figure 1. Functional Block Diagram
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
201222A • Skyworks Proprietary and Confidential Information. • Products and product information are subject to change without notice. • January 25, 2010
1
SKYWORKS [ SKYWORKS SOLUTIONS INC. ]
