DATA SHEET
SKY65943-11: GNSS Low-Noise Amplifier Front-End Module
with Integrated Pre-Filter and Post-Filter
Applications
Action cameras
Drones
Personal navigation devices
GNSS radio receivers
RF_IN
LNA
Output
Match
204404-001
Bias/Enable
VCC
VEN
Wearables
RF_OUT
Features
Small signal gain: 16 dB
Out-of-band P1dB: +6 dBm
Out-of-band rejection: +80 dBc, 1627 to 1660 MHz
Low noise figure: 1.7 dB
Low current consumption: 2.9 mA @ 1.8 V
Input/output impedance internally matched to 50
Ω
Single DC supply: 1.62 to 3.3 V
Minimum number of external SMT devices required
Small MCM (10-pin, 2.5 x 2.5 mm) package
(MSL3, 260
C
per JEDEC J-STD-020)
Input
Match
Figure 1. SKY65943-11 Block Diagram
Description
The SKY65943-11 is a front-end module (FEM) with an integrated
low-noise amplifier (LNA) and pre-filter and post-filter designed
for Global Navigation Satellite System (GNSS) receiver
applications. The device provides high gain, excellent out-of-band
rejection, and low noise figure. The pre-filter and post-filter
provide low in-band insertion loss and excellent rejection for the
cellular, PCS, and WLAN frequency bands. Output matching
components are embedded inside the device. Only one external
input matching inductor is required.
The SKY65943-11 is optimized to operate at 1559 to 1606 MHz,
which makes it ideal for GPS/GLONASS/Galileo/Compass/QZSS
radio receiver applications.
The SKY65943-11 uses surface-mount technology (SMT) in the
form of a 2.5 x 2.5 mm Multi-Chip Module (MCM) package, which
allows for a highly manufacturable and low-cost solution.
A functional block diagram is shown in Figure 1. The pin
configuration and package are shown in Figure 2. Signal pin
assignments and functional pin descriptions are provided in
Table 1.
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.
GND
VEN
VCC
GND
RF_IN
1
2
3
4
5
10
9
8
7
6
204404-002
RF_OUT
GND
AMP_IN
FILT_OUT
GND
Figure 2. SKY65943-11 Pinout
(Top View)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
August 6, 2018 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 204404F
1
DATA SHEET • SKY65943-11: GNSS LOW-NOISE AMPLIFIER FEM WITH GPS/GLONASS/BDS PRE-FILTER AND POST-FILTER
Table 1. SKY65943-11 Signal Descriptions
Pin
1
2
3
4
5
GND
VEN
VCC
GND
RF_IN
Name
Ground
LNA enable
LNA power supply
Ground
RF input
Description
Pin
6
7
8
9
10
GND
FILT_OUT
AMP_IN
GND
RF_OUT
Name
Ground
Filter output
LNA input
Ground
RF output
Description
Technical Description
LNA Enable
The VEN signal (pin 2) enables or disables the LNA. A logic high
signal powers on the LNA, and a logic low signal powers off the
device.
Table 2. SKY65943-11 Absolute Maximum Ratings
1
Parameter
RF input power
Supply voltage
Storage temperature
Junction temperature
Electrostatic discharge:
Human Body Model (HBM), Class 1A
P
IN
V
CC
T
STG
T
J
ESD
Symbol
Electrical and Mechanical Specifications
The absolute maximum ratings of the SKY65943-11 are provided
in Table 2. The recommended operating conditions are specified
in Table 3, and electrical specifications are provided in Tables 4
and 5.
Minimum
Maximum
+10
Units
dBm
V
C
C
0
-55
3.4
+150
+150
250
V
1 Exposure to maximum rating conditions for extended periods may reduce device reliability. There is no damage to device with only one parameter set at the limit and all other parameters
set at or below their nominal value. Exceeding any of the limits listed here may result in permanent damage to the device.
ESD HANDLING:
Although this device is designed to be as robust as possible, electrostatic discharge (ESD) can damage this device.
This device must be protected at all times from ESD when handling or transporting. Static charges may easily produce
potentials of several kilovolts on the human body or equipment, which can discharge without detection.
Industry-standard ESD handling precautions should be used at all times.
Table 3. SKY65943-11 Recommended Operating Conditions
Parameter
Frequency
Supply voltage
LNA enable:
Enable (high)
Disable (low)
Case temperature
LNA
ENABLE
LNA
DISABLE
T
C
V
CC
- 0.3
0
-40
+25
V
CC
0.3
+85
V
V
C
f
V
CC
Symbol
Min
1559
1.62
Typ
1575
Max
1606
3.3
Units
MHz
V
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
2
204404F • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • August 6, 2018
DATA SHEET • SKY65943-11: GNSS LOW-NOISE AMPLIFIER FEM WITH GPS/GLONASS/BDS PRE-FILTER AND POST-FILTER
Table 4. SKY65943-11 Electrical Specifications
1
(V
CC
= 1.8 V, V
EN
= 1.8 V, f = 1575 MHz, T
C
= +25
C,
Unless Otherwise Noted)
Parameter
Symbol
Test Condition
P
IN
= -30 dBm:
Small signal gain
|S21|
@ 1559 MHz
@ 1575 MHz
@ 1606 MHz
@ 1559 MHz
@ 1575 MHz
@ 1606 MHz
f1 = 1575 MHz @ P
IN
= -30 dBm
f2 = 1576 MHz @ P
IN
= -30 dBm
12
13.5
12
15
15
15
2.2
1.7
2.0
-7
-13.5
f_OOB = 1627 MHz, IP1dB@ f=1575 MHz
Out-of-band 1dB input compression point
Reverse isolation
Input return loss
Output return loss
Supply current
Shutdown current
OOB_IP1dB
f_OOB = 1540 MHz, IP1dB@ f=1575 MHz
|S12|
|S11|
|S22|
I
CC
I
LEAK
P
IN
= -30 dBm
P
IN
= -30 dBm
P
IN
= -30 dBm
No RF
No RF, V
EN
= 0 V
P
IN
= 0 dBm (in-band referred):
@ 10 to 300 MHz
@ 300 to 700 MHz
@ 700 to 1525 MHz
@ 1525 to 1540 MHz
@ 1627 to 1660 MHz
@ 1660 to 2500 MHz
@ 2500 to 6000 MHz
P
IN
= -30 dBm, V
CC
= 1.8 V, 50% of
Venable to 90% final RF power
P
IN
= -30 dBm, V
CC
= 1.8 V, 50% of
Venable to 10% final RF power
+80
+90
+85
+60
+80
+75
+65
1
0.1
1.5
0.2
dBc
dBc
dBc
dBc
dBc
dBc
dBc
μS
μS
6
30
38
10
13
2.9
0.1
4.0
1
dBm
dB
dB
dB
mA
μA
6
2.6
2.0
2.4
dB
dB
dB
dB
dB
dB
dBm
dBm
dBm
Min
Typ
Max
Units
Noise figure
NF
In-band third order input intercept point
In-band 1 dB input compression point
IIP3
IP1dB
Out-of-band rejection
OOB
LNA turn-on time
LNA turn-off time
t
ON
t
OFF
1 Performance is guaranteed only under the conditions listed in this table.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
August 6, 2018 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 204404F
3
DATA SHEET • SKY65943-11: GNSS LOW-NOISE AMPLIFIER FEM WITH GPS/GLONASS/BDS PRE-FILTER AND POST-FILTER
Table 5. SKY65943-11 Electrical Specifications
1
(V
CC
= 2.8 V, V
EN
= 2.8 V, f = 1575 MHz, T
C
= +25
C,
Unless Otherwise Noted)
Parameter
Symbol
Test Condition
P
IN
= -30 dBm:
Small signal gain
|S21|
@ 1559 MHz
@ 1575 MHz
@ 1606 MHz
@ 1559 MHz
@ 1575 MHz
@ 1606 MHz
f1 = 1575 MHz @ P
IN
= -30 dBm
f2 = 1576 MHz @ P
IN
= -30 dBm
13.5
14.5
13.0
16
16
15.5
2.2
1.7
2.0
-7
-13.0
f_OOB = 1627 MHz, IP1dB@ f=1575 MHz
Out-of-band 1dB input compression point
Reverse isolation
Input return loss
Output return loss
Supply current
Shutdown current
OOB_IP1dB
f_OOB = 1540 MHz, IP1dB@ f=1575 MHz
|S12|
|S11|
|S22|
ICC
ILEAK
P
IN
= -30 dBm
P
IN
= -30 dBm
P
IN
= -30 dBm
No RF
No RF, V
EN
= 0 V
P
IN
= 0 dBm (in-band referred):
@ 10 to 300 MHz
@ 300 to 700 MHz
@ 700 to 1525 MHz
@ 1525 to 1540 MHz
@ 1627 to 1660 MHz
@ 1660 to 2500 MHz
@ 2500 to 6000 MHz
P
IN
= -30 dBm, V
CC
= 2.8 V, 50% of
Venable to 90% final RF power
P
IN
= -30 dBm, V
CC
= 2.8 V, 50% of
Venable to 10% final RF power
+80
+90
+85
+60
+80
+75
+65
1
0.1
1.5
0.2
dBc
dBc
dBc
dBc
dBc
dBc
dBc
μS
μS
6
40
12
18
3
0.1
4.5
1
dBm
dB
dB
dB
mA
μA
6
2.6
2.0
2.4
dB
dB
dB
dB
dB
dB
dBm
dBm
dBm
Min
Typ
Max
Units
Noise figure
NF
In-band third order input intercept point
In-band 1 dB input compression point
IIP3
IP1dB
Out-of-band rejection
OOB
LNA turn-on time
LNA turn-off time
T
ON
T
OFF
1 Performance is guaranteed only under the conditions listed in this table.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
4
204404F • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • August 6, 2018
DATA SHEET • SKY65943-11: GNSS LOW-NOISE AMPLIFIER FEM WITH GPS/GLONASS/BDS PRE-FILTER AND POST-FILTER
Evaluation Board Description
The SKY65943-11 Evaluation Board is used to test the
performance of the SKY65943-11 LNA. An assembly drawing for
the Evaluation Board is shown in Figure 3. The Evaluation Board
schematic diagram is shown in Figure 4. Table 6 provides the Bill
of Materials (BOM) list for Evaluation Board components.
Package and Handling Information
Since the device package is sensitive to moisture absorption, it is
baked and vacuum packed before shipping. Instructions on the
shipping container label regarding exposure to moisture after the
container seal is broken must be followed. Otherwise, problems
related to moisture absorption may occur when the part is
subjected to high temperature during solder assembly.
The SKY65943-11 is rated to Moisture Sensitivity Level 3 (MSL3)
at 260
C.
It can be used for lead or lead-free soldering. For
additional information, refer to the Skyworks Application Note,
PCB Design & SMT Assembly/Rework Guidelines for MCM-L
Packages,
document number 101752.
Care must be taken when attaching this product, whether it is
done manually or in a production solder reflow environment.
Production quantities of this product are shipped in a standard
tape and reel format.
Package Dimensions
The PCB layout footprint for the SKY65943-11 is provided in
Figure 5. Typical part markings are shown in Figure 6. Package
dimensions are shown in Figure 7, and tape and reel dimensions
are provided in Figure 8.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
August 6, 2018 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 204404F
5
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