PRODUCT SUMMARY
SKY66181-11: 1805 to 1880 MHz Linear Power Amplifier
Applications
3G/4G LTE Band 3 small cell
Active distributed antenna system
Cellular repeaters
Driver amplifier
Active Bias
RFOUT
Coupling
Port
Output
Match
VCC1
VEN
VBIAS
VCC3
Features
High gain: 38 dB (unconditionally stable)
High linearity: +23 dBm with < –50 dBc ACLR @ 85°C
(WCDMA Test Model 1 with 64 DPCH)
RF Input and Output internally matched to 50
Ω
Excellent output return loss: < 30 dB
Integrated active bias: performance compensated over temp
PA On/Off function: < 2
μs
switching time
Integrated coupler for output power monitoring
Single supply voltage: 3.3 V
Minimal external components
Pin-to-pin compatible PA family supporting all 3GPP bands
Small 5 x 5 mm, 28-pin package
(MSL3, 260
C
per JEDEC J-STD-020)
RFIN
Input
Match
RFOUT
Stage
1
PA
Stage
2
PA
Stage
3
PA
203406-001
VCC2
Figure 1. SKY66181-11 Linear PA Block Diagram
Description
The SKY66181-11 is a high-linearity power amplifier (PA) with
fully matched input/output and high gain. The compact 5 x 5 mm
PA is designed for FDD 3G/4G LTE small cell base stations
operating from 1805 to 1880 MHz. The active biasing circuitry is
integrated to compensate PA performance over temperature,
voltage, and process variation as well as an internal coupler for
power monitoring.
The SKY66181-11 requires minimal external components and is
part of a high-linearity, pin-to-pin compatible PA family
supporting all 3GPP bands.
A block diagram of the SKY66181-11 is shown in Figure 1. The
device package and pinout for the 28-pin device are shown in
Figure 2. Table 1 lists the pin-to-pin compatible parts in the PA
family.
Skyworks Green
TM
products are compliant with
all applicable legislation and are halogen-free.
For additional information, refer to
Skyworks
Definition of Green
TM
, document number
SQ04–0074.
Table 1. Pin-to-Pin Compatible PA Family
Part Number
SKY66181-11
SKY66184-11
SKY66185-11
SKY66186-11
SKY66187-11
SKY66188-11
SKY66189-11
Frequency (MHz)
1805 to 1880
2110 to 2170
851 to 894
728 to 768
2620 to 2690
758 to 803
1930 to 1995
3
1, 4, and 10
5, 6, 18, 19, 26, and 27
12, 13, 14, and 17
7
28
2 and 25
LTE Band
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
204703A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • August 3, 2017
1
PRODUCT SUMMARY • SKY66181-11: 1805 TO 1880 MHz LINEAR POWER AMPLIFIER
Ordering Information
Model Name
SKY66181-11: Linear PA
Manufacturing Part Number
SKY66181-11
Evaluation Board Part Number
SKY66181-11-EK1
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August 3, 2017 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 204703A
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