PRODUCT SUMMARY
SKY77778-61 Power Amplifier Module for LTE FDD Band 7
(2500–2570 MHz)
Applications
•
Long-Term Evolution (LTE)
•
Evolved Universal Terrestrial
Radio Access Networks (EUTRAN)
•
Handsets and data cards
Description
The SKY77778-61 Power Amplifier Module (PAM) is a fully matched, 10-pad surface mount
(SMT) module developed for LTE applications. The module includes coverage of LTE FDD Band 7
in a co©mpact 2.0 mm x 2.5 mm package. Attaining high efficiencies throughout the entire
power range while meeting the stringent linearity requirements of LTE, the SKY77778-61
delivers unsurpassed savings in current consumption for data-intensive applications.
The Gallium Arsenide (GaAs) Microwave Monolithic Integrated Circuit (MMIC) contains all
amplifier active circuitry, including input, interstage, and output matching circuits. Output match
into a 50
Ω
load, realized off-chip within the module package, optimizes efficiency and power
performance. The silicon CMOS support die, providing precision biasing for the MMIC affords a
true CMOS-compatible control interface.
The SKY77778-61 is manufactured with Skyworks' InGaP GaAs Heterojunction Bipolar Transistor
(HBT) process which provides for all positive voltage DC supply operation and maintains high
efficiency and good linearity. While primary bias to the SKY77778-61 can be supplied directly
from any suitable battery with an output of 2.5 V to 5.0 V, optimal performance is obtained with
VCC2 sourced from a DC-DC power supply based on target output power levels. No external
supply side switch is needed as typical "off" leakage is a few microamperes with full primary
voltage supplied from the battery.
Features
•
Performance optimized for FDD
Band 7
•
Optimized for Average Power
Tracking (APT) / Compatible with
Envelope Tracking Controller
(ETC) implementation
•
High efficiency
•
Up to 20 MHz bandwidth
•
Small, low profile package
-
2 mm x 2.5 mm x 0.9 mm
-
10-pad configuration
•
MIPI RFFE interface
•
V
CC2
decoupling caps
<
125 pF
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
203222A • Skyworks Proprietary and Confidential Information. • Products and product information are subject to change without notice. • June 4, 2014
1
Ordering Information
Product Name
SKY77778-61 Power Amplifier Module
Order Number
SKY77778-61
Evaluation Board Part Number
EN40-D475-004
Copyright © 2014, Skyworks Solutions, Inc. All Rights Reserved.
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