SGA5286ZDC
to 5000MHz,
Cascadable
SiGe HBT
MMIC Ampli-
fier
SGA5286Z
DC to 5000MHz, CASCADABLE SiGe HBT
MMIC AMPLIFIER
Package: SOT-86
Product Description
The SGA5286Z is a high performance SiGe HBT MMIC Amplifier. A Darling-
ton configuration featuring one-micron emitters provides high F
T
and
excellent thermal performance. The heterojunction increases breakdown
voltage and minimizes leakage current between junctions. Cancellation of
emitter junction non-linearities results in higher suppression of intermodu-
lation products. Only two DC-blocking capacitors, a bias resistor, and an
optional RF choke are required for operation.
Optimum Technology
Matching® Applied
GaAs HBT
GaAs MESFET
InGaP HBT
SiGe BiCMOS
Si BiCMOS
Gain (dB)
15
IRL
GAIN
Features
Gain & Return Loss vs. Frequency
V
D
= 3.5 V, I
D
= 60 mA (Typ.)
20
-10
-20
-30
-40
Return Loss (dB)
10
5
ORL
GaAs pHEMT
Si CMOS
Si BJT
GaN HEMT
RF MEMS
0
0
1
FO
Parameter
Small Signal Gain
R
Min.
12.2
Specification
Typ.
13.5
12.0
11.5
17.0
14.0
31.0
27.2
5000
N
2
3
Frequency (GHz)
EW
4
SiGe HBT
D
T
L
=+25ºC
5
ES
I
0
Max.
14.9
Unit
dB
dB
dB
dBm
dBm
dBm
dBm
MHz
850MHz
1950MHz
2400MHz
850MHz
1950MHz
850MHz
1950MHz
>10dB
G
Output Third Intercept Point
Bandwidth Determined by Return
Loss
Input Return Loss
19.5
dB
1950MHz
Output Return Loss
24.4
dB
1950MHz
Noise Figure
4.9
dB
1950MHz
Device Operating Voltage
3.1
3.5
3.9
V
Device Operating Current
54
60
66
mA
Thermal Resistance
97
°C/W
(Junction - Lead)
Test Conditions: V
S
=8V, I
D
=60mA Typ., OIP
3
Tone Spacing=1MHz, P
OUT
per tone=-5dBm, R
BIAS
=75Ω, T
L
=25°C, Z
S
=Z
L
=50Ω
N
RF MICRO DEVICES®, RFMD®, Optimum Technology Matching®, Enabling Wireless Connectivity™, PowerStar®, POLARIS™ TOTAL RADIO™ and UltimateBlue™ are trademarks of RFMD, LLC. BLUETOOTH is a trade-
mark owned by Bluetooth SIG, Inc., U.S.A. and licensed for use by RFMD. All other trade names, trademarks and registered trademarks are the property of their respective owners. ©2006, RF Micro Devices, Inc.
DS20151204
O
T
Output Power at 1dB Compression
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
N
Applications
PA Driver Amplifier
Cellular, PCS, GSM, UMTS
IF Amplifier
Wireless Data, Satellite
S
High Gain: 12.0dB at
1950MHz
Cascadable 50Ω
Operates from Single Supply
Low Thermal Resistance
Package
Condition
1 of 7
SGA5286Z
Absolute Maximum Ratings
Parameter
Max Device Current (I
D
)
Max Device Voltage (V
D
)
Max RF Input Power
Max Junction Temp (T
J
)
Operating Temp Range (T
L
)
Max Storage Temp
Rating
120
5
+16
+150
-40 to +85
+150
Unit
mA
V
dBm
°C
°C
°C
Caution! ESD sensitive device.
Exceeding any one or a combination of the Absolute Maximum Rating conditions may
cause permanent damage to the device. Extended application of Absolute Maximum
Rating conditions to the device may reduce device reliability. Specified typical perfor-
mance or functional operation of the device under Absolute Maximum Rating condi-
tions is not implied.
RoHS status based on EUDirective2002/95/EC (at time of this document revision).
The information in this publication is believed to be accurate and reliable. However, no
responsibility is assumed by RF Micro Devices, Inc. ("RFMD") for its use, nor for any
infringement of patents, or other rights of third parties, resulting from its use. No
license is granted by implication or otherwise under any patent or patent rights of
RFMD. RFMD reserves the right to change component circuitry, recommended appli-
cation circuitry and specifications at any time without prior notice.
Typical Performance at Key Operating Frequencies
N
O
T
2 of 7
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
FO
R
N
EW
Small Signal Gain
dB
13.7
13.6
13.5
12.0
Output Third Order Intercept Point
dBm
31.6
31.0
27.2
Output Power at 1dB Compression
dBm
16.5
17.0
14.0
Input Return Loss
dB
24.2
20.4
17.1
19.5
Output Return Loss
dB
28.2
34.5
35.3
24.4
Reverse Isolation
dB
17.7
18.0
18.4
19.2
Noise Figure
dB
4.1
4.1
4.9
Test Conditions: V
S
=8V, I
D
=60mA Typ., OIP
3
Tone Spacing=1MHz, P
OUT
per tone=-5dBm, R
BIAS
=75Ω, T
L
=25°C, Z
S
=Z
L
=50Ω
IG
Parameter
Unit
100
MHz
500
MHz
850
MHz
N
1950
MHz
S
2400
MHz
11.5
25.4
12.7
19.4
23.8
19.5
5.0
Operation of this device beyond any one of these limits may cause permanent dam-
age. For reliable continuous operation, the device voltage and current must not
exceed the maximum operating values specified in the table on page one.
Bias Conditions should also satisfy the following expression:
I
D
V
D
<(T
J
-T
L
)/R
TH
, j-l
3500
MHz
10.5
ES
D
16.7
26.2
19.5
DS20151204
SGA5286Z
OIP
3
vs. Frequency
V
D
= 3.5 V, I
D
= 60 mA (Typ.)
35
30
OIP
3
(dBm)
P
1dB
(dBm)
18
16
14
12
10
P
1dB
vs. Frequency
V
D
= 3.5 V, I
D
= 60 mA (Typ.)
25
20
T
L
=+25ºC
15
0
0.5
1
1.5
2
Frequency (GHz)
2.5
3
T
L
=+25ºC
8
0
0.5
1
1.5
2
Frequency (GHz)
S
2.5
3
V
D
= 3.5 V, I
D
= 60 mA (Typ.)
7
6
5
4
3
2
0
Noise Figure (dB)
EW
1
0.5
1.5
2
Frequency (GHz)
D
T
L
=+25ºC
2.5
3
N
O
T
FO
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
R
N
ES
I
G
Noise Figure vs. Frequency
N
3 of 7
SGA5286Z
|
S
21
|
vs. Frequency
20
15
S
21
(dB)
10
5
S
11
(dB)
|
S
11
|
vs. Frequency
0
V
D
= 3.5 V, I
D
= 60 mA (Typ.)
V
D
= 3.5 V, I
D
= 60 mA (Typ.)
-10
-20
0
0
1
2
3
Frequency (GHz)
4
5
0
1
-12
-15
S
12
(dB)
V
D
= 3.5 V, I
D
= 60 mA (Typ.)
0
-10
S
22
(dB)
-18
-21
EW
-20
-30
-40
D
ES
I
0
1
|
S
12
|
vs. Frequency
|
S
22
|
vs. Frequency
V
D
= 3.5 V, I
D
= 60 mA (Typ.)
G
2
3
Frequency (GHz)
N
T
L
-40
S
4
T
L
+25°C
-40°C
+85°C
-30
T
L
+25°C
-40°C
+85°C
5
T
L
-24
0
1
2
3
Frequency (GHz)
4
R
N
+25°C
-40°C
+85°C
+25°C
-40°C
+85°C
5
2
3
Frequency (GHz)
4
5
N
4 of 7
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
O
T
FO
SGA5286Z
Pin
1
2, 4
3
Function
RF IN
GND
RF OUT/BIAS
Description
RF input pin. This pin requires the use of an external DC-blocking capacitor chosen for the frequency of operation.
Connection to ground. For optimum RF performance, use via holes as close to ground leads as possible to reduce lead
inductance.
RF output and bias pin. DC voltage is present on this pin, therefor a DC-blocking capacitor is necessary for proper opera-
tion.
Application Schematic
Frequency (Mhz)
1 uF
L
C
RF in
C
B
4
1
SGA5286Z
3
2
C
B
RF out
ES
I
Recommended Bias Resistor Values for I
D
=60mA
R
BIAS
=( V
S
-V
D
) / I
D
Supply Voltage(V
S
)
R
BIAS
6V
43
8V
75
10 V
110
12 V
150
Evaluation Board Layout
V
S
R
BIAS
FO
R
N
EW
1 uF
1000 pF
Mounting Instructions
1. Use a large ground pad area under device pins 2
and 4 with many plated through-holes as shown.
2. We recommend 1 or 2 ounce copper. Measurements
for this data sheet were made on a 31 mil thick FR-4
board with 1 ounce copper on both sides.
O
T
L
C
C
D
C
B
C
B
N
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
D
Note: R
BIAS
provides DC bias stability over temperature.
G
1000
pF
L
C
68 nH
N
33 nH
C
D
C
D
100 pF
68 pF
S
22 pF
22 nH
V
S
R
BIAS
Reference
Designator
500
850
1950
2400
3500
C
B
220 pF
100 pF
68 pF
56 pF
22 pF
18 nH
39 pF
15 pF
15 nH
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