January 20, 2013 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 201724B
DATA SHEET • SKY65366-11 T/R FRONT-END MODULE
Technical Description
The SKY65366-11 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 (TR, EN, 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.
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.
LNA biasing can be independently lowered with an external bias
resistor between the RBIAS pin and ground.
Operation Mode Control
The five SKY65366-11 operating modes are controlled by the
three digital pins TR, EN, and BYP (pins 2, 3, and 4, respectively).
The control logic truth Table is provided in Table 2.
Electrical and Mechanical Specifications
The absolute maximum ratings of the SKY65366-11 are provided
in Table 3. Recommended operating conditions are specified in
Table 4. Electrical specifications are provided in Tables 5, 6, and
7.
Typical performance characteristics of the SKY65366-11 are
illustrated in Figures 3 through 20.
Table 2. SKY65366-11 Operating Modes Truth Table (Note 1)
Control Voltage
Operating Mode
Transmit
Transmit bypass
Receive
Receive Bypass
Shutdown (Note 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
PA
On
Off
Off
Off
Off
LNA
Off
Off
On
Off
Off
Internal States
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
Note 1:
See Recommended Operating Conditions Table for logic 0 and 1 characteristics. “X” = don’t care state, defined as a valid state of logic 1 or 0. Control signals must be a valid logic
1 or 0. Performance is not guaranteed if control inputs are floated.
Note 2:
In the high state, TR, EN, 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).
201724B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • January 20, 2013
3
DATA SHEET • SKY65366-11 T/R FRONT-END MODULE
Table 3. SKY65366-11 Absolute Maximum Ratings (Note 1)
Parameter
LNA supply voltage
LNA supply current
PA supply voltage
Digital supply voltage
Digital supply voltage
Digital control voltage (TR, EN, BYP)
Transmit output power control voltage
Receive 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
Electrostatic Discharge:
Charged Device Model (CDM), Class 3
Human Body Model (HBM), Class 1A
Machine Model (MM), Class A
VCC_RX
I
CC
_
RX
VCC_TX1/2/3
V
DD
1
V
DD
2
V
CTL
VPC
P
IN
_
RX
2
P
IN
_
ANT
P
IN
_
TX
P
IN
_
TX
_
BYP
T
C
T
STG
T
J
VSWR
ESD
500
250
50
V
V
V
–40
–40
–0.3
–0.5
–0.5
–0.5
–0.3
Symbol
Minimum
–0.3
Maximum
+5.0
20
+6.0
+5.5
+5.5
V
DD
1
+ 0.3
+5.0
+5
+33
+15
+20
+85
+150
+150
10:1
Units
V
mA
V
V
V
V
V
dBm
dBm
dBm
dBm
°C
°C
°C
–
Note 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.
Note 2:
Nominal thermal resistance, junction to case, is 18 °C/W.
CAUTION:
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. Static charges may easily produce potentials of several kilovolts on the human body
or equipment, which can discharge without detection. Industry-standard ESD precautions should be used at all times.
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