DATA SHEET
SKY65364-21: 900 MHz Transmit/Receive Front-End Module
Applications
Automated meter reading
Advanced metering infrastructure
ISM systems
Range extender
Digital
Control
VPC
PA
Harmonic
Filter
Matching
Network
3
Control
Logic
TX
Features
Transmit output power > +30 dBm
High-efficiency PA
Analog power control
Receive path NF <2.1 dB
PA bypass mode
LNA low-current mode with external resistor
LNA bypass mode
Integrated control logic
Internal RF match and bias circuits
All RF ports internally DC blocked
Shutdown mode
Small footprint, MCM (28-pin, 6 x 6 mm) package
(MSL3, 260
C
per JEDEC J-STD-020)
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.
ANT
Harmonic
Filter
Matching
Network
LNA
Bias
Matching
Network
RXO
RX1
RX2
RBIAS
203189E-001
Figure 1. SKY65364-21 Functional Block Diagram
Description
The Skyworks SKY65364-21 is a high-performance,
transmit/receive (T/R) front-end module (FEM). The device
provides a complete T/R chain with T/R switches.
The device transmit chain features +30 dBm output power and a
40 percent power-added efficiency (PAE).
The device receive chain features a low-noise amplifier (LNA) with
a 1.5 dB noise figure (NF) and 15 dB gain. The cascaded NF and
gain, taking into account the 0.5 dB insertion loss
transmit/receive antenna switch, are 2.1 dB and 14.5 dB,
respectively, which makes the SKY65364-21 ideal for medium
power microwave links such as 900 MHz Industrial, Scientific,
and Medical (ISM) band applications.
The module also has a shutdown mode, PA bypass mode, and
LNA bypass mode to minimize power consumption.
The device is mounted in a 28-pin, 6 x 6 mm Multi-Chip Module
(MCM) surface-mount technology (SMT) package, which allows
for a highly manufacturable low-cost solution.
A functional block diagram of the SKY65364-21 is shown in
Figure 1. The device package and pinout for the 28-pin MCM are
shown in Figure 2. Signal pin assignments and functional pin
descriptions are provided in Table 1.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
203189F • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • May 24, 2016
1
DATA SHEET • SKY65364-21: T/R FRONT-END MODULE
VCC_TX3
VCC_TX2
VCC_TX1
GND
TR
EN
BYP
VPC
GND
ANT
GND
GND
VDD2
23
22
21
20
19
18
17
16
GND
1
2
3
4
5
6
7
8
28
27
26
25
24
GND
GND
TX
GND
RXO
VCC_RX
VDD1
GND
203189E-002
9
10
11
12
13
14
15
GND
GND
GND
Figure 2. Figure 1. SKY65364-21 Pinout
(Top View)
Table 1. SKY65364-21 Signal Descriptions
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
GND
TR
EN
BYP
VPC
GND
ANT
GND
GND
RX1
GND
GND
RX2
RBIAS
Name
Ground
Digital control input: transmit/receive mode
Digital control input: shutdown mode
Digital control input: bypass mode
Transmit output power adjustment
Ground
Antenna switch common port. Internally
matched to 50
Ω.
Ground
Ground
Receive arm of antenna switch. Internally
matched to 50
Ω.
Ground
Ground
LNA and bypass switch output port.
Internally matched to 50
Ω.
LNA bias setting resistor
Description
Pin
15
16
17
18
19
20
21
22
23
24
25
26
27
28
GND
VDD1
VCC_RX
RXO
GND
TX
GND
GND
VDD2
VCC_TX1
VCC_TX2
VCC_TX3
GND
GND
Name
Ground
3.3 V power supply
3.3 V power supply
Receive output
Ground
Transmit path input port. Internally matched
to 50
Ω.
Ground
Ground
3.6 V power supply
3.6 V power supply
3.6 V power supply
3.6 V power supply
Ground
Ground
Description
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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May 24, 2016 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 203189F
RBIAS
RX1
RX2
DATA SHEET • SKY65364-21: T/R FRONT-END MODULE
Technical Description
The SKY65364-21 consists of a complete T/R chain with T/R
switches contained in the module. A single-pole, triple-throw
(SP3T) switch selects between the receive, transmit, and transmit
bypass paths. The module has a shut-down mode to minimize
power consumption.
Three digital input pins (EN, TR, and BYP) are used to select
between transmit, transmit bypass, receive, receive bypass, or
shutdown mode.
Transmit Path
The transmit path contains a Power Amplifier (PA) optimized for
saturated performance. The PA output is internally matched for
optimum output power and efficiency into a 50
Ω
load
impedance. The PA output is passed through an harmonic filter
before being fed through the SP3T switch. The PA input provides
a good return loss into a 50
Ω
source impedance.
Transmit output power is controlled by the VPC pin, which is
normally set to 2.25 V DC voltage. The nominal DC input
impedance into the VPC pin is 50 kΩ.
Table 2. SKY65364-21 Operating Modes Truth Table
1
Control Voltage
Operating Mode
Transmit
Transmit bypass
Receive
Receive Bypass
Shutdown
2
TR
(Pin 2)
1
1
0
0
X
EN
(Pin 3)
1
1
1
1
0
BYP
(Pin 4)
0
1
0
1
X
Receive Path
The receive path contains an LNA with bypass switch. The LNA
impedance matching networks are internal to the module and
have been optimized for a low NF while maintaining good return
losses into a 50
Ω
source and load impedance. The receive arm
of the SP3T switch and the LNA input are connected to module
pins to allow an external filter to be inserted into the receive path.
Operation Mode Control
The five SKY65364-21 operating modes are controlled by the
three digital pins TR, EN, and BYP (pins 2, 3, and 4, respectively).
The control logic truth is provided in Table 2.
Electrical and Mechanical Specifications
The absolute maximum ratings of the SKY65364-21 are provided
in Table 3. Recommended operating conditions are specified in
Table 4. Electrical specifications are provided in Tables 5, 6,
and 7.
Internal States
PA
On
Off
Off
Off
Off
LNA
Off
Off
On
Off
Off
LNA Bypass
Switch
Open
Open
Open
Through
Open
T/R Switch
PA
PA bypass
RX1
RX1
Open
PA Bypass
Switch
PA
PA bypass
Open
Open
Open
1 See Table 4 for logic 0 and 1 characteristics. “X” = don’t care state, defined as a valid state of logic 1 or 0.
2 In the high state, EN, TR, and BYP have an input current of 33
μA
due to an internal 100 kΩ pulldown resistance. For the lowest leakage current, the high state is not recommended for TR
and BYP when the device is in shutdown mode (EN = 0).
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
203189F • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • May 24, 2016
3
DATA SHEET • SKY65364-21: T/R FRONT-END MODULE
Table 3. SKY65364-21 Absolute Maximum Ratings
1
Parameter
LNA supply voltage
LNA supply current
PA supply voltage
PA supply current
Digital supply voltage
Digital supply voltage
Digital control voltage (EN, TR, BYP)
Transmit output power control voltage
Receive RF input power (RX2)
Receive bypass RF input power (RX2)
Receive RF input power (ANT)
Transmit RF input power
Transmit RF input power, bypass mode
Operating case temperature (Note 2)
Storage temperature
Junction temperature
T/R port load VSWR in transmit mode
VCC_RX
I
CC
_
RX
VCC_TX1/2/3
I
CC
_
TX
V
DD
1
V
DD
2
V
CTL
VPC
P
IN
_
RX
2
P
IN
_
RX2
_
BYP
P
IN
_
ANT
P
IN
_
TX
P
IN
_
TX
_
BYP
T
C
T
STG
T
J
VSWR
–40
–55
–0.5
–0.5
–0.5
–0.3
–0.3
Symbol
Minimum
–0.3
Maximum
+5.0
20
+6.0
1.6
+5.5
+5.5
V
DD
1
+ 0.3
+5.0
+5
+18
+33
+15
+20
+85
+150
+150
10:1
Units
V
mA
V
A
V
V
V
V
dBm
dBm
dBm
dBm
dBm
°C
°C
°C
–
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.
2 Nominal thermal resistance, junction to case, is 18 °C/W.
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 4. SKY65364-21 Recommended Operating Conditions
Parameter
Transmit frequency range
Receive frequency range
LNA supply voltage
Digital supply voltage
PA supply voltage
Digital input voltage, logic 1 (EN, TR, BYP)
Digital input voltage, logic 0 (EN, TR, BYP)
Transmit output power control voltage
Receive RF input power (RX2)
Transmit RF input power (TX)
Transmit duty cycle
f
f
VCC_RX
VDD1
VDD2
VCC_TX1/2/3
V
IH
V
IL
VPC
P
IN
_
RX
2
P
IN
_
TX
+12
Symbol
Minimum
890
900
3.00
3.00
3.40
3.40
2.8
0
0
2.25
3.30
VCC_RX
VCC_TX1/2/3
3.60
Typical
Maximum
960
960
3.45
VCC_RX
3.80
3.80
VDD1
0.7
2.50
–15
+13
50
Units
MHz
MHz
V
V
V
V
V
V
V
dBm
dBm
%
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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May 24, 2016 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 203189F
DATA SHEET • SKY65364-21: T/R FRONT-END MODULE
Table 5. SKY65364-21 DC Electrical Specifications
1
(VCC_RX = VDD1 = 3.3 V, VCC_TX1/2/3 = VDD2 = 3.6 V, T
C
= 25
C,
RBIAS = 0
Ω,
No RF Input Power, Unless Otherwise Noted)
Parameter
Quiescent current, receive mode
2
Quiescent current, receive bypass mode
2
VDD1 quiescent current, transmit mode
VCC_TX1/2/3 quiescent current, transmit mode
Symbol
I
Q
_
RX
I
Q
_
BYP
I
Q
_
VDD
1
I
Q
_
TX
T
C
= 25 °C,
VCC_TX1/2/3 = 3.6 V,
VCC_RX = 3.3 V
P
IN
= +12 dBm
Test Condition
Min
Typical
12
80
22
30
Max
Units
mA
μA
mA
18
680
50
4
750
mA
mA
μA
μA
μA
μA
μA
μA
VCC_TX1/2/3 operating current, transmit mode
VDD1 quiescent current, transmit bypass mode
3
VCC_TX1/2/3 quiescent current, transmit bypass
mode
3
VCC_RX quiescent current, shutdown mode
3
VCC_TX1/2/3 quiescent current, shudown mode
3
Digital input current, logic 1
3
Digital input current, logic 0
3
2 Total current drawn from VCC_RX and VDD1 supplies.
3 Not production tested.
I
OP
_
TX
I
DD
1
I
Q
_
TXB
I
Q
_
SD
_
RX
I
Q
_
SD
_
TX
I
IH
I
IL
0.5
0.005
33
0
1 Performance is guaranteed only under the conditions listed in this table. Modes are established as indicated in Table 2.
Table 6. SKY65364-21 Electrical Specifications: Receive and Receive Bypass Mode
1
(1 of 2)
(VCC_RX = VDD1 = 3.3 V, VCC_TX1/2/3 = VDD2 = 3.6 V, T
C
= 25
C,
f = 900 to 960 MHz, 50
Ω
Source and Load Impedance, CW Input,
RBIAS = 0
Ω,
Unless Otherwise Noted)
Parameter
Receive Mode: RX2 to Receive Output Path
Small signal gain
Noise figure
Noise figure variation over temperature
1 dB input compression point (Note 2)
Third order input intercept point (Note 2)
Input return loss
Output return loss
Reverse isolation
Transition time (Note 2)
G
NF
NF
TEMP
IP1dB
IIP3
|S
11
|
|S
22
|
|S
12
|
t
1 dB gain compression
P
IN
= –30 dBm/tone,
200 kHz spacing
–3
12
8
T
C
= 25 °C,
VCC_RX = 3.3 V
15
1.5
±0.15
–10
0
15
12
20
0.5
2.1
dB
dB
dB
dBm
dBm
dB
dB
dB
μs
Symbol
Test Condition
Min
Typical
Max
Units
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
203189F • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • May 24, 2016
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