DATA SHEET
SKY65170-21: 860 – 960 MHz, 0.5 W High Power Power
Amplifier
Applications
•
CDMA2000 cellular band
•
WCDMA, Bands V and VIII
•
Femtocell transmitters
Description
Skyworks SKY65170-21 is a fully-matched, 0.5 W Power
Amplifier (PA) with high efficiency, designed for use in the 860 to
960 MHz band.
The device is fabricated using Skyworks high reliability Indium
Gallium Phosphide (InGaP) Heterojunction Bipolar Transistor (HBT)
technology. This process allows for single supply operation while
maintaining high efficiency and good linearity.
The SKY65170-21 contains all of the active bias and RF matching
circuits, which make it easy to integrate into 50
Ω
RF systems.
The internal input and output match are optimized for gain, 1 dB
Output Compression Point (OP1dB), Adjacent Channel Leakage
Ratio (ACLR), Adjacent Channel Power Ratio (ACPR), and
efficiency when integrated in a 50
Ω
system.
The primary bias to the SKY65170-21 can be supplied directly
from a single 5 VDC supply. The PA is designed to operate with
lower current by reducing the bias voltage.
The device is internally matched and mounted in a 20-pin,
6 x 6 mm Multi-Chip Module (MCM) Surface-Mounted Technology
(SMT) package, which allows for a highly manufacturable low
cost solution. The device package and pinout for the 20-pin MCM
are shown in Figure 1. A block diagram of the SKY65170-21 is
shown in Figure 2.
VCC1
GND
18
Features
•
Wideband frequency operation: 860 to 960 MHz
•
High gain: > 30 dB
•
OP1dB: > +27 dBm
•
ACPR
≤
–51 dBc for P
OUT
≥ +18 dBm
•
ACLR
≤
–45 dBc for P
OUT
≥ +18 dBm
•
Single DC supply: 5 V
•
Internal RF match and bias circuits
•
PA on/off control voltage
•
Small footprint, MCM (20-pin, 6 x 6 mm) SMT package (MSL3,
260
°C
per JEDEC J-STD-020)
N/C
GND
RF_IN
GND
PA_EN
GND
VC_BIAS
1
20
19
17
N/C
Skyworks
Pb-free products are compliant with
all applicable legislation. For additional
information, refer to
Skyworks Definition of
Lead (Pb)-Free,
document number
SQ04-0073.
16
GND
VCC2
GND
GND
RF_OUT
GND
2
15
3
4
14
13
5
12
6
7
8
9
10
11
V_REF1
V_REF2
GND
GND
S2040a
Figure 1. SKY65170-21 Pinout – 20-Pin MCM
(Top View)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
201379B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 14, 2011
1
DATA SHEET • SKY65170-21 0.5 W, HIGH POWER PA
V_REF1
VC_BIAS
V_REF2
PA_EN
Active Bias
RF_IN
Input
Match
Stage
1
PA
Inter-Stage
Match
Output
Match
Stage
2
PA
RF_OUT
VCC1
VCC2
S2041a
Figure 2. SKY65170-21 Block Diagram
Technical Description
The SKY65170-21 PA contains all of the needed RF matching and
DC biasing circuits. The device is a two-stage, HBT InGaP 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., femtocell and infrastructure applications).
The device has been characterized with a standard CDMA2000
modulated signal. Under these stringent test conditions, the
device exhibits excellent spectral purity and power efficiency.
Electrical and Mechanical Specifications
Signal pin assignments and functional pin descriptions are
described in Table 1. The absolute maximum ratings of the
SKY65170-21 are provided in Table 2. Electrical specifications are
provided in Table 3.
Typical performance characteristics of the SKY65170-21 are
illustrated in Figures 3 through 7.
Table 1. SKY65170-21 Signal Descriptions
Pin #
1
2
3
4
5
6
7
8
9
10
GND
RF_IN
GND
PA_EN
GND
VC_BIAS
GND
V_REF1
GND
V_REF2
Name
Ground
RF input
Ground
PA enable
Ground
Bias voltage, 5 V
Ground
Bias reference 1 voltage, 5 V
Ground
Bias reference 2 voltage, 5 V
Description
Pin #
11
12
13
14
15
16
17
18
19
20
GND
RF_OUT
GND
GND
VCC2
GND
N/C
GND
VCC1
N/C
Name
Ground
RF output
Ground
Ground
Stage 2 collector voltage, 5 V
Ground
No connection
Ground
Stage 1 collector voltage, 5 V
No connection
Description
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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December 14, 2011 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 201379B
DATA SHEET • SKY65170-21 0.5 W, HIGH POWER PA
Table 2. SKY65170-21 Absolute Maximum Ratings (Note 1)
Parameter
RF output power
Supply voltage
PA enable voltage
Total supply current
Power dissipation
Storage temperature
Junction temperature
Thermal resistance
P
OUT
VCC1, VCC2, V_REF1,
V_REF2, VC_BIAS
PA_EN
I
CC
P
D
T
ST
T
J
Θ
JC
–65
3
Symbol
Minimum
Maximum
+29
5.5
5
700
1.5
+125
+150
30
Units
dBm
V
V
mA
W
°C
°C
°C/W
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. Exceeding any of the limits listed here may result in permanent damage to the device.
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. SKY65170-21 Recommended Operating Conditions
Parameter
Frequency range
Supply voltage (Note 1)
Bias voltage (Note 1)
Reference voltage (Note 1)
Reference current
PA enable current
PA enable voltage (Note 1)
Case operating temperature
f
VCC1, VCC2
VC_BIAS
V_REF1, V_REF2
I
_
REF
1
, I
_
REF
2
I
PA
_
EN
PA_EN
T
C
3
–40
+25
Symbol
Minimum
860
4.75
4.75
5.00
5.00
2.60
12
<1
5
+85
Typical
Maximum
960
5.25
5.25
2.75
Units
MHz
V
V
V
mA
mA
V
°C
Note 1:
Voltage levels measured at the pins of the package. The Evaluation Board supply voltage levels may be different. Refer to the Evaluation Board schematic diagram in this Data Sheet.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
201379B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 14, 2011
3
DATA SHEET • SKY65170-21 0.5 W, HIGH POWER PA
Table 4. SKY65170-21 Electrical Specifications (Note 1)
(VCC1 = VCC2 = V_REF1 = V_REF2 = VC_BIAS = 5 V, T
C
= +25
°C,
f = 880 MHz, PA_EN = 5 V, CW, Unless Otherwise Noted)
Parameter
Output power @ 1 dB compression
Small signal gain
Adjacent Channel Power Ratio
Symbol
OP1dB
|S
21
|
ACPR1
ACPR2
Adjacent Channel Leakage Ratio
ACLR
P
IN
= –15 dBm
@750 kHz,
P
OUT
= +18 dBm
@1.98 MHz,
P
OUT
= +18 dBm
P
OUT
= +18 dBm, with
WCDMA test model 1, 64
DPCH
P
TONE
= +15 dBm,
frequency spacing =
1 MHz
No RF input
P
OUT
= +18 dBm
Test Condition
Min
+27
30
Typical
+28
32
–55
–74
–45
–48
–63
Max
Units
dBm
dB
dBc
dBc
dBc
3
rd
Order Output Intercept Point
OIP3
+45
dBm
Quiescent Current
Operating current
Noise Figure
Input return loss
Output return loss
Voltage Standing Wave Ratio for stable
operation
Leakage current
I
Q
I
CC
NF
|S
11
|
|S
22
|
VSWR
200
220
6.5
mA
mA
dB
dB
dB
8:1
–
P
IN
= –15 dBm
P
IN
= –15 dBm
P
OUT
= +20 dBm with
WCDMA test model 1,
64 DPCH
PA_EN = 0 V
10
9
14
12
I
LEAKAGE
1.2
μA
Note 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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December 14, 2011 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 201379B
DATA SHEET • SKY65170-21 0.5 W, HIGH POWER PA
Typical Performance Characteristics
(VCC1 = VCC2 = V_REF1 = V_REF2 = VC_BIAS = 5 V, T
C
= +25
°C,
f = 880 MHz, PA_EN = 5 V, CW, Unless Otherwise Noted)
35.0
34.5
34.0
33.5
34
33
32
31
Gain
(dB)
Gain
(dB)
860
870
880
890
900
910
33.0
32.5
32.0
31.5
31.0
30.5
30.0
850
30
29
28
27
26
25
0
+5
+10
+15
+20
+25
+30
+35
Frequency (MHz)
Output Power (dBm)
Figure 3. Gain vs Frequency
0.7
0.6
0.5
Figure 4. Gain vs Output Power
–30
–40
Current
(mA)
0.3
0.2
0.1
0
0
+5
+10
+15
+20
+25
+30
+35
ACPR (dBc)
0.4
–50
–60
–70
–80
–90
+15
ACPR1
ACPR2
+17
+19
+21
+23
+25
Output Power (dBm)
Output Power (dBm)
Figure 5. Current vs Output Power (CW)
Figure 6. ACPR vs Output Power (CDMA2000)
+22
+21
Output Power (dBm)
+20
+19
+18
+17
+16
850
860
870
880
890
900
910
Frequency (MHz)
Figure 7. ACLR Limited Output Power vs Frequency
(Band V, WCDMA Test Model 1, 64 DPCH, ACLR = –45 dBc)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
201379B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 14, 2011
5
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