Skyworks Low Noise Amplifiers, Transistors and Drivers
ADC
LNA
Rx
Q
LNA
IF AGC
ADC
I
Receive Digital
Baseband Out
Transmit
Typical Receiver Block Diagram
Skyworks’ new Low Noise Amplifier (LNA) products meet the
demanding ultra low noise figure and high linearity needs of
today’s receiver designs. Fabricated from Skyworks’ advanced
pseudomorphic high electron mobility transistor (pHEMT),
silicon germanium (SiGe), and Heterojunction Bipolar Transistor
(HBT) processes, these amplifiers have the flexibility to achieve
the necessary gain and linearity specifications. The LNA
product lineup features a family of two-stage cascaded LNAs,
discrete packaged transistors, and high linearity low noise
driver amplifiers.
The SKY65048-360LF, SKY65049-360LF, and SKY65066-360LF
complete the family of two-stage LNAs operating over the
0.7–1.2 GHz, 1.7–2.4 GHz, and 2.3–2.7 GHz frequency
bands. The devices integrate the interstage matching
network on die to reduce the number external components
required. The recommended schematics supplied by Skyworks
provides unconditional stability up to 18 GHz and >18 dB
return loss while maintaining 0.7 dB noise figure. The same
layout is used for all devices, simplifying design for all
available frequency bands.
Skyworks’ discrete packaged transistors have the flexibility to be
used in numerous low noise applications. The SKY65050-372LF and
SKY65052-377LF are 200 µm pHEMTs designed for low power
applications operating with a bias as low as 2 V, 5 mA. The
SKY65052-372LF and SKY65051-377LF are 400 µm pHEMTs
designed for high linearity, low noise applications. Skyworks
offers recommended matching networks for unconditional
stability up to 18 GHz and the design tools necessary to easily
design custom matching networks.
Skyworks’ low noise driver amplifiers are ideal choices for
mid-stage amplification in receiver designs. The devices feature
flat gain response,
≤
2 dB noise figure, and high linearity
performance. Devices require minimal external components to
simply the design and lower overall cost.
For more information and our latest product offering (including
data sheets, application notes, and evaluation board) please visit
our Web site at
www.skyworksinc.com
8
7
6
5
1 –
40
o
C
1
+25
o
C
1
+85
o
C
1.4
1.2
Noise Figure (dB)
1, 2
4
3
2
1
0
0
2
4
6
8
10
2 –
40
o
C
2
+25
o
C
2
+85
o
C
1.0
0.8
0.6
0.4
0.2
+85
o
C
+25
o
C
–40
o
C
12
14
16
18
0
1.70
1.75
1.80
1.85
1.90
1.95
2.00
2.05
2.10
Frequency (GHz)
Frequency (GHz)
Figure 1. Unconditional Stability of SKY65066-360LF
Figure 2. Noise Figure of SKY65049-360LF
USA: 781-376-3000 • Asia: 886-2-2735 0399 Ext. 990 • Europe: 33 (0)1 4144366 • Email: sales@skyworksinc.com
Ultra Low Noise Amplifiers
Low Noise Amplifiers
Frequency
(MHz)
1500–2400
700–1200
1700–2400
2300–2700
400–3000
Technology
pHEMT
pHEMT
pHEMT
pHEMT
SiGe
Gain
Typ.
(dB)
24
16.5
17
16.5
16.5
Test
Freq.
(MHz)
1950
900
2000
2500
915
NF
(dB)
(1)
0.7
0.65
0.7
0.7
0.85
OIP3
Typ.
(dBm)
34
35
34
35.5
31.5
P
1 dB
(dBm)
16
18
17.5
17.5
9.5
V
dd
(V)
5
5
5
5
3.3
Quiescent
Current
Typ. (mA)
65
85
65
75
7.8
Package
(mm)
8-pin QFN 2 x 2
8-pin QFN 2 x 2
8-pin QFN 2 x 2
8-pin QFN 2 x 2
8-pin QFN 2 x 2
Part Number
SKY65084-360LF
SKY65048-360LF
SKY65049-360LF
SKY65066-360LF
SKY65047-360LF
Low Noise Discrete pHEMT Transistors
device
Size (µm)
200
200
400
400
Frequency
(MHz)
450–6000
450–6000
450–6000
450–6000
Test
Freq.
(GHz)
2.4
2.4
2.4
2.4
Gain
Typ.
(dB)
15.5
15.5
16
16.5
NF
(dB)
(1)
0.65
0.65
0.85
0.8
OIP3
Typ.
(dBm)
23.5
24
34
33.5
P
1 dB
(dBm)
10.5
12
19
15.5
V
dd
(V)
3
3
5
5
Quiescent
Current
Typ. (mA)
20
20
55
55
Package
(mm)
4-pin SC-70
2.20 x 1.35
4-pin QFN 2 x 2
4-pin SC-70
2.20 x 1.35
4-pin QFN 2 x 2
Part Number
SKY65050-372LF
SKY65051-377LF
SKY65052-372LF
SKY65053-377LF
Low Noise Ultralinear Driver Amplifiers
Frequency
(MHz)
250–6000
390–1500
1500–2500
Technology
pHEMT
HBT
HBT
Gain
Typ.
(dB)
15
16.5
17
Test
Freq.
(MHz)
1000
900
2000
NF
(dB)
2
1.8
2.1
OIP3
Typ.
(dBm)
40
37.5
38
P
1 dB
(dBm)
21.5
25
21
V
dd
(V)
3 to 5
5
5
Quiescent
Current
Typ. (mA)
140
46
47
Package
(mm)
4-pin SOT-89 2.4 x 4.5
4-pin SOT-89 2.4 x 4.5
4-pin SOT-89 2.4 x 4.5
Part Number
SKY65038-70LF
SKY65045-70LF
SKY65080-70LF
1. Input connector loss removed from measurement with unconditionally stable matching and >18 dB input return loss matching.
New! Free Designer Kits
Select products and sample/designer kits
available for purchase online •
www.skyworksinc.com
BUY
NOW
Innovation to Go
TM
™
USA: 781-376-3000 • Asia: 886-2-2735 0399 Ext. 990 • Europe: 33 (0)1 4144366 • Email: sales@skyworksinc.com
