Features
1 of 6
Optimum Technology
Matching® Applied
GaAs HBT
InGaP HBT
GaAs MESFET
SiGe BiCMOS
Si BiCMOS
SiGe HBT
GaAs pHEMT
Si CMOS
Si BJT
GaN HEMT
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.
Product Description
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
RF MEMS
SGA4586Z
DC to 4000MHz, CASCADABLE SiGe HBT
MMIC AMPLIFIER
The SGA4586Z is a high performance SiGe HBT MMIC Amplifier. A Darlington con-
figuration featuring one-micron emitters provides high FT and excellent thermal per-
formance. The heterojunction increases breakdown voltage and minimizes leakage
current between junctions. Cancellation of emitter junction non-linearities results in
higher suppression of intermodulation products. Only two DC-blocking capacitors, a
bias resistor, and an optional RF choke are required for operation.
Gain & Return Loss vs. Freq. @T L= + 25° C
0.0
8.0
16.0
24.0
32.0
0.0 1.0 2.0 3.0 4.0 5.0
Frequency (GHz)
Gain (dB)
-40.0
-30.0
-20.0
-10.0
0.0
Return Loss (dB)
GAIN
IRL
ORL
High Gain: 17.9dB at
1950MHz
Cascadable 50Ω
Operates from Single Supply
Low Thermal Resistance
Package
Applications
PA Driver Amplifier
Cellular, PCS, GSM, UMTS
IF Amplifier
Wireless Data, Satellite
DS100916
Package: SOT-86
SGA4586ZDC
to 4000MHz,
Cascadable
SiGe HBT
MMIC Ampli-
fier
Parameter Specification Unit Condition
Min. Typ. Max.
Small Signal Gain 22.0 24.0 26.5 dB 850MHz
17.9 dB 1950MHz
16.3 dB 2400 MHz
Output Power at 1dB Compression 16.5 dBm 850MHz
13.7 dBm 1950MHz
Output Third Intercept Point 28.6 dBm 850MHz
27.7 dBm 1950MHz
Bandwidth Determined by Return
Loss (>10dB) 4000 MHz >10dB
Input Return Loss 19.4 dB 1950MHz
Output Return Loss 21.5 dB 1950MHz
Noise Figure 1.9 dB 1950MHz
Device Operating Voltage 3.6 V
Device Operating Current 41 45 49 mA
Thermal Resistance
(Junction - Lead) 97 °C/W
Test Conditions: VS=8V, ID=45mA Typ., OIP3 Tone Spacing=1MHz, POUT per tone=-5dBm, RBIAS=100Ω, TL=25°C, ZS=ZL=50Ω
2 of 6 DS100916
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
SGA4586Z
Typical Performance at Key Operating Frequencies
Absolute Maximum Ratings
Parameter Rating Unit
Max Device Current (ID)90mA
Max Device Voltage (VD)5V
Max RF Input Power +18 dBm
Max Junction Temp (TJ)+150°C
Operating Temp Range (TL) -40 to +85 °C
Max Storage Temp +150 °C
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:
IDVD<(T
J-TL)/RTH, j-l
Parameter Unit 100
MHz
500
MHz
850
MHz
1950
MHz
2400
MHz
3500
MHz
Small Signal Gain dB 26.2 24.0 18.0 16.3
Output Third Order Intercept Point dBm 27.7 28.6 26.0 26.3
Output Power at 1dB Compression dBm 16.3 16.5 14.0 12.7
Input Return Loss dB 18.1 14.9 15.0 19.4 19.8 16.1
Output Return Loss dB 18.5 20.6 24.4 21.5 18.3 16.1
Reverse Isolation dB 30.1 28.4 26.6 21.2 19.3 15.8
Noise Figure dB 1.71.71.92.3
Test Conditions: VS=8V, ID=45mA Typ., OIP3 Tone Spacing=1MHz, POUT per tone=-5 dBm, RBIAS=100Ω, TL=25°C, ZS=ZL=50Ω
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.
OIP3 vs. Frequency
V
D
= 3.2 V, I
D
= 45 mA
P1dB vs. Frequency
V
D
= 3.2 V, I
D
= 45 mA
15
20
25
30
35
00.511.522.53
Frequency (GHz)
OIP3 (dBm)
8
10
12
14
16
18
0 0.5 1 1.5 2 2.5 3
Frequency (GHz)
P1dB (dBm)
T
L
=+25ºC T
L
=+25ºC
Noise Figure vs. Frequency
VD= 3.2 V, ID= 45 mA
0
1
2
3
4
5
00.511.522.53
Fre quency (GHz)
Noise Figure (dB)
TL=+25ºC
3 of 6DS100916
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
SGA4586Z
0
8
16
24
32
0.0 1.0 2.0 3.0 4.0 5.0
Frequency (GHz)
S21(dB)
+25°C
-40°C
+85°C
-40
-30
-20
-10
0
0.0 1.0 2.0 3.0 4.0 5.0
Frequency (GHz)
S11(dB)
+25°C
-40°C
+85°C
TL
TL
-40
-30
-20
-10
0
0.0 1.0 2.0 3.0 4.0 5.0
Frequency (GHz)
S22(dB)
+25°C
-40°C
+85°C
-40
-30
-20
-10
0
0.0 1.0 2.0 3.0 4.0 5.0
Frequ ency (GHz)
S12(dB)
+25°C
-40°C
+85°C TL
TL
|S11| vs. Frequency|S21| vs. Frequency
|S12| vs. Frequency |S22| vs. Frequency
Typical RF Performance Over Temperature ( Bias: VD= 3.2 V, ID= 45 mA (Typ.) )
4 of 6 DS100916
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
SGA4586Z
Application Schematic
Evaluation Board Layout
Pin Function Description
1RF IN
RF input pin. This pin requires the use of an external DC-blocking capacitor chosen for the frequency of operation.
2, 4 GND Connection to ground. For optimum RF performance, use via holes as close to ground leads as possible to reduce lead
inductance.
3RF OUT/BIAS
RF output and bias pin. DC voltage is present on this pin, therefor a DC-blocking capacitor is necessary for proper opera-
tion.
ecnerefeR rotangiseD
)zhM(ycneuqerF
005 058 0591 0042 0053
C
B
Fp022Fp001Fp86Fp65Fp93
C
D
Fp001Fp86Fp22Fp22Fp51
L
C
Hn86Hn33Hn22Hn81Hn51
IrofseulaVrotsiseRsaiBdednemmoceR
D
Am54=
R
SAIB
V(=
S
V-
D
I/)
D
V(egatloVylppuS
S
)V6V8V01V21
R
SAIB
15001051081
R:etoN
SAIB
.erutarepmetrevoytilibatssaibCDsedivorp
RF in RF out
1 uF
CB
CB
CD
VS
RBIAS
LC
1
2
3
4
1000
pF
SGA4586Z
1 uF
RBIAS
A45
1000 pF
CB
CB
CD
LC
VS
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.
5 of 6DS100916
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
SGA4586Z
Suggested Pad Layout
Package Drawing
Dimensions in inches (millimeters)
Refer to drawing posted at www.rfmd.com for tolerances.
6 of 6 DS100916
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
SGA4586Z
Part Identification
Ordering Information
Ordering Code Description
SGA4586Z 13" Reel with 3000 pieces
SGA4586ZSQ Sample bag with 25 pieces
SGA4586ZSR 7” Reel with 100 pieces
SGA4586ZPCK1 850MHz, 8V Operation PCBA with 5-piece sample bag
45Z
