DATA SHEET
SKY67106-306LF: 1.5-3.0 GHz Two-Stage, High Linearity and
High Gain Low-Noise Amplifier
Applications
•
CDMA, WCDMA, TD-SCDMA, WiMAX, and LTE cellular
infrastructure systems
•
Ultra low-noise, high gain and high linearity systems
Features
•
Ultra-low NF: 0.65 dB @ 1950 MHz
•
High gain: 35 dB @ 1950 MHz
•
Low quiescent current: 100 mA
•
Stage 1 adjustable gain and current
•
Wideband performance, useable to 3 GHz
•
Small, QFN
(16-pin, 4
x
4
mm) Pb-free package (MSL1, 260
°C
per JEDEC J-STD-020)
Figure 1. SKY67106-306LF Block Diagram
Description
The SKY67106-306LF is a GaAs pHEMT and HBT two-stage, Low-
Noise Amplifier (LNA) with active bias and high linearity
performance. The pHEMT front end of the device provides an
ultra-low Noise Figure (NF) while the HBT output stage provides
high gain, linearity, and efficiency.
The SKY67106-306LF operates in the frequency range of 1.5
to
3.0 GHz. For lower frequency operation, the pin and layout-
compatible SKY67105-306LF (Data Sheet document # 201518)
should be used.
The SKY67106-306LF
is
provided in a
4
x
4
mm, 16-pin Quad Flat
No-Lead (QFN) package. 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 Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
201521A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • May 17. 2011
1
DATA SHEET • SKY67106-306LF TWO-STAGE LNA
Figure 2. SKY67106-306LF Pinout – 16-Pin QFN
(Top View)
Table 1. SKY67106-306LF Signal Descriptions
Pin #
1
2
3
4
5
6
7
8
N/C
N/C
RF_IN1
RF_GND
VBIAS
FB
RF_OUT1
RF_IN2
Name
Description
No connection. May be grounded with no
change in performance.
No connection. May be grounded with no
change in performance.
RF input to first stage amplifier
RF ground for first stage amplifier
Bias for first stage amplifier. External
resistor sets current consumption.
Feedback pin for first stage amplifer.
RF output of first stage amplifer
RF input to second stage amplifier
Pin #
9
10
11
12
13
14
15
16
N/C
RF_OUT2
RF_OUT2
N/C
N/C
N/C
N/C
N/C
Name
Description
No connection. May be grounded with no
change in performance.
RF output of second stage amplifier
RF output of second stage amplifier
No connection. May be grounded with no
change in performance.
No connection. May be grounded with no
change in performance.
No connection. May be grounded with no
change in performance.
No connection. May be grounded with no
change in performance.
No connection. May be grounded with no
change in performance.
Electrical and Mechanical Specifications
The absolute maximum ratings of the SKY67106-306LF are
provided in Table
2.
Eectrical specifications are provided in
Table 3
(1950
MHz) and Table
4 (2600
MHz).
Typical performance characteristics of the SKY67106-306LF are
illustrated in Figures 3 through 15 (1950 MHz) and in Figures 16
through 28 (2600 MHz).
Skyworks Solutions,
Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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May 17. 2011 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 201521A
DATA SHEET • SKY67106-306LF TWO-STAGE LNA
Table 2. SKY67106-306LF Absolute Maximum Ratings
Parameter
Supply voltage
RF input power
Operating temperature
Storage temperature
Junction temperature
Thermal resistance
Note:
Symbol
V
DD
P
IN
T
OP
T
STG
T
J
Θ
JC
Minimum
Maximum
5.5
+15
Units
V
dBm
°C
°C
°C
°C/W
–40
–40
+85
+125
+150
85
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. The
SKY67106-306LF is a Class 1B ESD device.
Table 3. SKY67106-306LF Electrical Specifications (Note 1)
(V
DD
= +5 V, T
OP
= +25
°C,
P
IN
= –30 dBm, Characteristic Impedance [Z
O
] = 50
Ω,
Optimized for 1950 MHz Operation, Unless Otherwise
Noted)
Parameter
RF Specifications
Noise Figure
Small signal gain
Input return loss
Output return loss
Reverse isolation
3
rd
Order Input Intercept Point
NF
|S
21
|
|S
11
|
|S
22
|
|S
12
|
IIP3
@ 1950 MHz
@ 1950 MHz
@ 1950 MHz
@ 1950 MHz
@ 1950 MHz
@ 1950 MHz,
Δf
= 1 MHz,
P
IN
=
–30
dBm/tone
@ 1950 MHz,
Δf
= 1 MHz,
P
IN
=
–30
dBm/tone
@ 1950 MHz
@ 1950 MHz
32.5
10
15
50
0
0.65
35.0
14
22
55
+2.5
0.87
dB
dB
dB
dB
dB
dBm
Symbol
Test Condition
Min
Typical
Max
Units
3
rd
Order Output Intercept Point
OIP3
+34.5
+37.0
dBm
1 dB Input Compression Point
1 dB Output Compression Point
DC Specifications
Supply voltage
Quiescent current
Supply current @ IP1dB
IP1dB
OP1dB
–11
+22
–9
+24
dBm
dBm
V
DD
I
DD
I
DD
_
P
1
DB
Set with external resistor
Set with external resistor
3.5
5.0
100
160
5.5
125
190
V
mA
mA
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
201521A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • May 17. 2011
3
DATA SHEET • SKY67106-306LF TWO-STAGE LNA
Typical Performance Characteristics (1950 MHz)
(V
DD
= +5 V, T
OP
= +25
°C,
P
IN
= –30 dBm, Characteristic Impedance [Z
O
] = 50
Ω,
Optimized for 1950 MHz Operation, Unless Otherwise
Noted)
Figure 3. Input Return Loss vs Frequency Over Temperature,
Narrow Band
Figure 4. Small Signal Gain vs Frequency Over Temperature,
Narrow Band
Figure 5. Reverse Isolation vs Frequency Over Temperature,
Narrow Band
Figure 6. Output Return Loss vs Frequency Over Temperature,
Narrow Band
Figure 7. Input Return Loss vs Frequency Over Temperature,
Wide Band
Figure 8. Small Signal Gain vs Frequency Over Temperature,
Wide Band
Skyworks Solutions,
Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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May 17. 2011 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 201521A
DATA SHEET • SKY67106-306LF TWO-STAGE LNA
Figure 9. Reverse Isolation vs Frequency Over Temperature,
Wide Band
Figure 10. Output Return Loss vs Frequency Over Temperature,
Wide Band
Figure 11. OIP3 vs Frequency Over Temperature
Figure 12. OIP3 vs Frequency Over Voltage
Figure 13. Gain vs Output Power Over Temperature
Figure 14. Quiescent Supply Current vs Output Power Over
Temperature
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
201521A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • May 17. 2011
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