DATA SHEET
SKY65900-11: 2.4 to 2.5 GHz +28 dBm WLAN Power
Amplifier
Applications
IEEE 802.11 b/g/n WLANs
ISM band transmitters
Wireless access point, routers, gateways
PA_EN
Active Bias
Detector
VDET
Features
DEVM = 3% for P
OUT
= +28 dBm @ 5 V
High gain = 34 dB @ 5 V
Internal active-bias circuits
Internal on/off control circuit
Internal load-insensitive power detector
Small QFN (16-pin, 4 x 4 mm) package
(MSL3, 260
C
per JEDEC J-STD-020)
RF_IN
Input
Match
Inter-
Stage
Match
Inter-
Stage
Match
Output Matching
Circuit
RF Output
VCC1
VCC2
VCC3_RFOUT
201725-001
Figure 1. SKY65900-11 Block Diagram
Description
The SKY65900-11 is a Microwave Monolithic Integrated Circuit
(MMIC) Power Amplifier (PA) with superior output power, linearity,
and efficiency. These features make the SKY65900-11 ideal for
Wireless Local Area Network (WLAN) applications. The high
linearity (low EVM) and high efficiency of this device make it ideal
for use in the transmit chain of WLAN access points or modems.
The SKY65900-11 is fabricated using Skyworks high reliability
Heterojunction Bipolar Transistor (HBT) InGaP process, which
allows for single supply operation while maintaining high
efficiency and good linearity. The device is internally matched at
the RF input and mounted in a 16-pin, 4 x 4 mm Quad Flat No-
Lead (QFN) surface-mount technology (SMT) package, which
allows for a highly manufacturable 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
GND
GND
14
16
15
13
PA_EN
GND
RF_IN
GND
GND
1
2
3
4
12
11
10
9
GND
VCC3_RFOUT
VCC3_RFOUT
GND
5
6
7
8
VCC1
VDET
Figure 2. SKY65900-11 Pinout
(Top View)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
201725I • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • February 23, 2017
1
VCC2
GND
201725-002
DATA SHEET • SKY65900-11: 2.4 to 2.5 GHz +28 dBm WLAN POWER AMPLIFIER
Table 1. SKY65900-11 Signal Descriptions
1
Pin
1
2
3
4
5
6
7
8
PA_EN
GND
RF_IN
GND
VCC1
VDET
VCC2
GND
Name
Digital enable
Ground
RF input
Ground
Stage 1 collector voltage
Detector voltage
Stage 2 collector voltage
Ground
Description
Pin
9
10
11
12
13
14
15
16
GND
VCC3_RFOUT
VCC3_RFOUT
GND
GND
GND
GND
GND
Name
Ground
Stage three collector voltage and RF output
Stage three collector voltage and RF output
Ground
Ground
Ground
Ground
Ground
Description
1 The center ground pad must have a low inductance and low thermal resistance connection to the printed circuit board ground plane.
Functional Description
The SKY65900-11 is a three-stage, HBT InGaP device optimized
for high linearity and power efficiency. An in-module active bias
circuit is included within the device for all three amplifier stages,
which provides excellent gain tracking over temperature and
voltage variations.
Each stage is supplied using the VCC1 (pin 5), VCC2 (pin 7), and
VCC3_RFOUT (pins 10 and 11). The Evaluation Board includes
shunt decoupling capacitors on these pins to suppress any
possible bias effect on the RF signal at low frequencies.
The SKY65900-11 includes an internal PA enable control pin
(pin 1) for fast RF on/off control. Zero volts turns off the PA while
1.8 to 3.6 V enables the PA. The device also provides an output
power detector voltage, VDET, at pin 6.
Pin 3 is the RF input, and pins 10 and 11 are the RF outputs.
External DC blocking or RF matching is required on the RF output.
Grounding
is through several ground pins and the package center
ground.
These features make the device suitable for wideband digital
applications where PA linearity and power consumption are of
critical importance (e.g., WLANs). The device has been
characterized with the highest specified data rates for 802.11b
(11 Mbps) and 802.11g (54 Mbps). Under these stringent test
conditions, the device exhibits excellent spectral purity and power
efficiency.
Electrical and Mechanical Specifications
The absolute maximum ratings of the SKY65900-11 are provided
in Table 2. The recommended operating conditions are specified
in Table 3 and electrical specifications are provided in Table 4.
Typical performance characteristics for the SKY65900-11 are
illustrated in Figures 3 through
9.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
2
February 23, 2017 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 201725I
DATA SHEET • SKY65900-11: 2.4 to 2.5 GHz +28 dBm WLAN POWER AMPLIFIER
Table 2. SKY65900-11 Absolute Maximum Ratings
1
Parameter
RF output power
Supply voltage (VCC1, VCC2, VCC3_RFOUT)
Total supply current @ P
OUT
= +30 dBm
Thermal resistance
Junction temperature
Case temperature
Storage temperature
Electrostatic discharge:
Human Body Model (HBM), Class 1B
500
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.
Symbol
P
OUT
V
CC
I
CC
Θ
JC
T
J
T
C
T
STG
Minimum
Maximum
+30
Units
dBm
V
A
°C/W
C
C
C
4.5
6.0
1
14.7
+170
–40
–55
+110
+125
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. SKY65900-11 Recommended Operating Conditions
Parameter
RF output power
Supply voltage (VCC1, VCC2, VCC3)
PA enable
Operating frequency
Case temperature
f
T
C
P
OUT
V
CC
4.50
1.8
2400
–40
+25
Symbol
Min
Typ
+28
5.00
3.3
5.25
3.6
2500
+85
Max
Units
dBm
V
V
MHz
C
Table 4. SKY65900-11 Electrical Specifications: 5.0 V Performance
1
(1 of 2)
(VCC1 = VCC2 = VCC3_RFOUT = 5 V, PA_EN = 3.3 V, T
C
= 25
°C,
Characteristic Impedance [Z
O
] = 50
Ω,
Unless Otherwise Noted)
Parameter
Continuous Wave Input Signal
Quiescent current
Operational current
1 dB output compression point
Small signal gain
Gain
variation across band
Input return loss
Output return loss
|S
11
|
|S
22
|
I
CCQ
I
CC
OP1dB
|S
21
|
@5V
P
OUT
= +28 dBm, 5 V, 1 Mbps
@5V
@5V
2.4 to 2.5
GHz
275
600
+34
34
1.0
10
10
660
mA
mA
dBm
dB
dB
dB
dB
Symbol
Test Condition
Min
Typ
Max
Units
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
201725I • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • February 23, 2017
3
DATA SHEET • SKY65900-11: 2.4 to 2.5 GHz +28 dBm WLAN POWER AMPLIFIER
Table 4. SKY65900-11 Electrical Specifications: 5.0 V Performance
1
(2 of 2)
(VCC1 = VCC2 = VCC3_RFOUT = 5 V, PA_EN = 3.3 V, T
C
= 25
°C,
Characteristic Impedance [Z
O
] = 50
Ω,
Unless Otherwise Noted)
Parameter
Continuous Wave Input Signal (continued)
Detector voltage
2
nd
harmonic
3
rd
harmonic
V
DET
2fo
3fo
P
OUT
= +28 dBm
P
OUT
= +28 dBm, CW, 5 V
P
OUT
= +28 dBm, CW, 5 V
0.57
–45
–38
V
dBm/MHz
dBm/MHz
Symbol
Test Condition
Min
Typical
Max
Units
Orthogonal Frequency Division Multiplexing Input Signal, 64 QAM, 54 Mbps
Output power, EVM compliant
Output power, mask compliant
Ruggedness
Band edge compliant
P
OUT
P
OUT
RU
BE
3% EVM, 802.11g, 802.11n,
MCS7, HT20, HT40
Compliant to CCK spectral
mask, +5 V
P
IN
≤ +2 dBm, 6:1 VSWR
Channel 1 and Channel 11,
HT20, MCS7
+19
+22
+26
+29
+28
+30
No change
dBm
dBm
dBm
1 Performance is guaranteed only under the conditions listed in this table.
Typical Performance Characteristics
(VCC1 = VCC2 = VCC3_RFOUT = 5 V, PA_EN = 3.3 V, Tc = 25 °C, Characteristic Impedance [Zo] = 50
Ω,
Unless Otherwise Noted)
5.0
4.5
4.0
3.5
2.40 GHz
2.45 GHz
2.50 GHz
0.80
0.75
0.70
0.65
DEVM (%)
3.0
2.5
2.0
1.5
1.0
0.5
0
0
+5
+10
+15
+20
+25
201725-003
Current
(mA)
0.60
0.55
0.50
0.45
0.40
0.35
0.30
0.25
0.20
+5
201725-004
2.40 GHz
2.45 GHz
2.50 GHz
+30
+7
+9 +11 +13 +15 +17 +19 +21 +23 +25 +27 +29
Output Power (dBm)
Output Power (dBm)
Figure 4. Current vs Output Power Over Frequency
(CW, V
CC
= +5 V)
Figure 3. DEVM vs Output Power Over Frequency
(V
CC
= +5 V)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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February 23, 2017 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 201725I
DATA SHEET • SKY65900-11: 2.4 to 2.5 GHz +28 dBm WLAN POWER AMPLIFIER
0.70
0.65
2.40 GHz
2.45 GHz
2.50 GHz
0
–10
2fo, 2.40 GHz
3fo, 2.40 GHz
2fo, 2.45 GHz
3fo, 2.45 GHz
2fo, 2.50 GHz
3fo, 2.50 GHz
Detector Voltage (V)
0.60
0.55
0.50
0.45
201725-005
Harmonics (dBm/MHz)
–20
–30
–40
–50
–60
+25
201725-006
0.40
0.35
0.30
+6
+8 +10 +12 +14 +16 +18 +20 +22 +24 +26 +28 +30
+26
+27
+28
+29
Output Power (dBm)
Output Power (dBm)
Figure 5. Detector Voltage vs Output Power Over Frequency
(CW, V
CC
= +5 V)
Figure 6. Second and Third Harmonic Levels vs Output Power
(CW, +5 V)
+40
+20
S11
S12
S21
S22
S-Parameters
(dB)
0
–20
–40
–60
–80
–100
0
1
2
3
4
5
6
7
8
9
10
201725-007
Frequency (GHz)
Figure 7. Small Signal Parameters vs Frequency
(@ 5 V)
201725-008
Figure 8. CCK Mask Compliance
(@ 2.412 GHz, +30 dBm, +5 V)
Figure 9. CCK Mask Compliance
(@2.484 GHz, +30 dBm, +5 V)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
201725I • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • February 23, 2017
5
201725-009
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