PRELIMINARY DATA SHEET
SE2605L: High Power (+26 dBm) 802.11n WLAN Power
Amplifier with Integrated Power Detector
Applications
IEEE 802.11n WLAN enabled:
Access points
Media gateways
Set top boxes
LCD TVs
Other broadband triple-play multimedia applications
Description
The SE2605L is a 2
GHz
Microwave Monolithic Integrated Circuit
(MMIC) Power Amplifier (PA) with superior output power, linearity,
and efficiency. These features make the SE2605L ideal for
Wireless Local Area Network (WLAN IEEE 802.11n) applications.
The device is fabricated using SiGe BiCMOS technology. The
device is internally matched and mounted in a 20-pin, 4 x 4 mm
Quad Flat No-Lead (QFN) Surface-Mounted Technology (SMT)
package, which allows for a highly manufacturable low cost
solution.
A block diagram of the SE2605L is shown in Figure 1.The device
package and pinout for the 16-pin QFN are shown in Figure 2.
Signal pin assignments and functional pin descriptions are
described in Table 1.
Features
Linear output power for IEEE 802.11n, 64-QAM,
EVM ≤ 3% = +26 dBm @ 5.0 V
High gain: 32 dB
Power shutdown mode
Superior gain flatness
Fully matched at RF input/output ports
Load insensitive power detector
Small footprint QFN (16-pin, 3 x 3 mm) SMT 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.
PA_EN
Bias
Input
Match
RF_IN
Inter-Stage
Match
Inter-Stage
Match
Detector
Y0252
RF_OUT
VCC1
VCC2
VDET
VCC3
Figure 1. SE2605L Block Diagram
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
203009E • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • February 10, 2016
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PRELIMINARY DATA SHEET • SE2605L: HIGH POWER (+26 dBm) 802.11n WLAN PA
GND
VCC1
N/C
16
RF_IN
EN
GND
VCC0
1
2
3
4
5
GND
15
14
13
12 GND
11 RF_OUT
10 RF_OUT
9
GND
6
GND
7
DET
N/C
VCC2
8
Y0251
Figure 2. SE2605L Pinout
(Top View)
Table 1. SE2605L Signal Descriptions
Pin
1
2
3
4
5
6
7
8
Name
RF_IN
EN
GND
VCC0
GND
GND
DET
N/C
RF Input
Power amplifier enable
Ground
Power supply for bias circuit
Ground
Ground
Power detector output
Not connected. Can be left floating or grounded.
Description
Pin
9
10
11
12
13
14
15
16
GND
RF_OUT
RF_OUT
GND
VCC2
N/C
VCC1
GND
Name
Ground
RF output
RF output
Ground
Power supply for second stage
Not connected. Can be left floating or grounded.
Power Supply driver stages
Ground
Description
Technical Description
The SE2605L PA contains all of the needed RF matching and DC
biasing circuits. The device also provides an output power
detector voltage.
The SE2605L is a three-stage, SiGe BiCMOS device optimized for
high linearity and power efficiency. These features make the
device suitable for wideband digital applications, where PA
linearity and power consumption are of critical importance (e.g.,
WiFi systems or WLANs).
The device has been characterized with the highest specified data
rates for IEEE 802.11n (64 QAM). Under these stringent test
conditions, the device exhibits excellent spectral purity and power
efficiency.
Electrical and Mechanical Specifications
The absolute maximum ratings of the SE2605L are provided in
Table 2. Recommended operating conditions are specified in
Table 3. Electrical specifications are provided in Tables 4, 5,
and 6.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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February 10, 2016 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 203009E
PRELIMINARY DATA SHEET • SE2605L: HIGH POWER (+26 dBm) 802.11n WLAN PA
Table 2. SE2605L Absolute Maximum Ratings
1
Parameter
Supply voltage
Enable voltage
RF input power
Operating temperature
Storage temperature
Junction temperature
Thermal resistance
Electrostatic discharge:
Human Body Model (HBM), Class 1C
at or below their nominal value. Exceeding any of the limits listed here may result in permanent damage to the device.
Symbol
VCC1, VCC2, VCC3
PA_EN
P
IN
T
OP
T
ST
T
J
Θ
JC
ESD
Minimum
–0.3
–0.3
Maximum
+5.5
+3.6
+12
Units
V
V
dBm
C
C
C
C/W
–40
–40
+85
+150
+160
13
1000
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
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.
Table 3. SE2605L Recommended Operating Conditions
Parameter
Supply voltage
Enable voltage
Case operating temperature
Symbol
VCC1, VCC2, VCC3
PA_EN
T
OP
Minimum
3.0
1.8
–40
+25
Typical
5.00
Maximum
5.25
3.6
+85
Units
V
V
C
Table 4. SE2605L Electrical Specifications: DC Characteristics
1
(VCC1 = VCC2 = VCC3 = 5.0 V, PA_EN = 3.3 V, T
OP
= +25
C
as Measured on the Evaluation Board, Unless Otherwise Noted)
Parameter
Supply current
I
CC
Symbol
Test Condition
802.11n:
P
OUT
= +26 dBm,
MCS7, 54 Mbps, 64 QAM
P
OUT
= +29 dBm, 11Mbps,
CCK signal, BT = 0.45
PA_EN = 0 V, No RF
Quiescent Current
Enable voltage:
High
Low
Enable current
Enable pin input impedance
I
CQ
PAEN_
H
PAEN_
L
I
EN
Z
EN
Passive pull down
No RF
1.8
0
300
10
400
600
500
650
10
220
3.6
0.5
560
690
100
mA
V
V
μA
kΩ
mA
μA
Min
Typical
Max
Units
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
203009E • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • February 10, 2016
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PRELIMINARY DATA SHEET • SE2605L: HIGH POWER (+26 dBm) 802.11n WLAN PA
Table 5. SE2605L Electrical Specifications: General
1
(VCC1 = VCC2 = VCC3 = 5.0 V, PA_EN = 3.3 V, T
OP
= +25
C,
Unless Otherwise Noted)
Parameter
Frequency range
Output power
f
P
OUT
54 Mbps OFDM signal, 64 QAM,
3% EVM
11 Mbps CCK signal,
BT = 0.045 , mask
1 dB output compression point
Small signal gain
Input return loss
Gain
variation
2
nd
and 3
rd
harmonics
Rise and fall time
Stability
Ruggedness
Ru
OP1dB
|S
21
|
|S
11
|
S
21
2fo, 3fo
t
R
, t
F
Over 40 MHz channel
Over entire band
P
OUT
= +29 dBm
50% of V
EN
edge to 10%/90%
of final power level
P
OUT
= +29 dBm,
VSWR = 4:1, all phases
P
IN
= +12dBm, 50% duty cycle,
VSWR = 6:1, all phases
P
IN
= CW
Symbol
Test Condition
Min
2.4
+24
+27
+29
30
10
+26
+29
+32
33
15
0.5
1.0
–50
0.5
All non-harmonically related outputs
< –42 dBm/MHz
No damage
–45
36
Typical
Max
2.5
Units
GHz
dBm
dBm
dBm
dB
dB
dB
dB
dBm/MHz
μs
1 Performance is guaranteed only under the conditions listed in this table.
Table 6. SE2605L Electrical Specifications: Power Detector Characteristics
1
(VCC = 5.0 V, PA_EN = 3.3 V, T
OP
= +25
C,
f = 2.45 GHz, Unless Otherwise Noted)
Parameter
Output power detector range
Detector voltage
Symbol
PDR
VDET
P
OUT
= +30 dBm
P
OUT
= +26 dBm
P
OUT
= 5 dB
Detector accuracy
Output impedance
DC load impedance
ERR
DET
PDZ
OUT
PDZ
LOAD
VSWR = 3:1
–1.5 to +1.5 dB
Test Condition
Min
0
0.90
0.65
0.30
–1.5
2.3
26.5
1.00
0.73
0.33
Typical
Max
OP1dB
1.15
0.82
0.36
+1.5
Units
dBm
V
V
V
dB
kΩ
kΩ
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
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February 10, 2016 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 203009E
PRELIMINARY DATA SHEET • SE2605L: HIGH POWER (+26 dBm) 802.11n WLAN PA
Evaluation Board Description
The SE2605L Evaluation Board is used to test the performance of
the SE2605L WLAN PA. A schematic diagram of the SE2605L
Evaluation Board is shown in Figure 3. A photograph of the
Evaluation Board is shown in Figure 4. Component values for the
SE2605L Evaluation Board are listed in Table 7.
Circuit Design Considerations
The following design considerations are general in nature and
must be followed regardless of final use or configuration:
Paths to ground should be made as short as possible.
The ground pad of the SE2605L has special electrical and
thermal grounding requirements. This pad is the main thermal
conduit for heat dissipation. Since the circuit board acts as the
heat sink, it must shunt as much heat as possible from the
device.
Therefore, design the connection to the ground pad to dissipate
the maximum wattage produced by the circuit board. Multiple
vias to the grounding layer are required. For further information,
refer to the Skyworks Application Note
PCB Design Guidelines
for High Power Dissipation Packages,
document number
201211.
Bypass capacitors should be used on the DC supply lines. Refer
to the schematic drawing in Figure 3 for further details.
The RF lines should be well separated from each other with
solid ground in between traces to maximize input-to-output
isolation.
NOTE:
A poor connection between the slug and ground increases
junction temperature (T
J
), which reduces the life of the
device.
Evaluation Board Setup Procedure
1. Connect system ground to pin 1 of connector J5.
2. Apply 5.0 V to pins 3 and 4 of connector J5.
3. By applying 3.3 V on PA_EN (pin 1 of the J4 header), the PA is
enabled. By placing a ground on PA_EN, the PA is disabled and
placed in a shutdown state, drawing minimal current.
4. The 2
GHz
amplifier performance can be monitored by applying
an RF signal to connector J1 (RF_IN). Monitor the output power
on the RF_OUT port connector, J1.
Detector performance can be monitored on pin 4 of connector J4.
CAUTION:
Do not overdrive the amplifier by applying too much
RF on the device input. A suitable starting input power
setting is –20 dBm.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
203009E • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • February 10, 2016
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