SGC4486Z
50MHz to
4000MHz
Active Bias Sili-
con Germa-
nium
SGC4486Z
Cascadable
Gain Block
50MHz to 4000MHz ACTIVE BIAS SILICON
GERMANIUM CASCADABLE GAIN BLOCK
Package: SOT-86
Product Description
Features
RFMD’s SGC4486Z is a high performance SiGe HBT MMIC amplifier utiliz-
ing a Darlington configuration with a patented active bias network. The
active bias network provides stable current over temperature and process
Beta variations. Designed to run directly from a 3V supply, the SGC4486Z
does not require a dropping resistor as compared to typical Darlington
amplifiers. The SGC4486Z is designed for high linearity 3V gain block
applications that require small size and minimal external components. It is
internally matched to 50Ω.
Single Fixed 3V Supply
No Dropping Resistor
Required
Patented Self-Bias Circuitry
P
=12.7dBm at 1950MHz
1dB
OIP =27.5dBm at 1950MHz
3
Robust 1000V ESD, Class 1C
HBM
Optimum Technology
Gain & Return Loss VD = 3V, ID = 52mA
Matching® Applied
30
GaAs HBT
GaAs MESFET
InGaP HBT
SiGe BiCMOS
Si BiCMOS
SiGe HBT
S21
Applications
20
10
PA Driver Amplifier
Cellular, PCS, GSM, UMTS,
WCDMA
Bias Tee Data, Z
S
= ZL
= 50 Ohms, T
L
= 25C
0
IF Amplifier
S22
S11
-10
-20
-30
GaAs pHEMT
Si CMOS
Wireless Data, Satellite
Si BJT
GaN HEMT
RF MEMS
0
0.5
1
1.5
2
2.5
3
3.5
4
Frequency (GHz)
Specification
Parameter
Unit
Condition
Min.
19.0
13.0
Typ.
20.5
14.5
12.3
13.8
12.7
12.4
29.0
27.5
26.5
14.5
11.5
3.4
Max.
22.0
16.0
Small Signal Gain
dB
dB
dB
dBm
dBm
dBm
dBm
dBm
dBm
dB
dB
dB
°C/W
V
mA
850MHz
1950MHz
2400MHz
850MHz
1950MHz
2400MHz
850MHz
1950MHz
2400MHz
1950MHz
1950MHz
1930MHz
junction - lead
Output Power at 1dB Compression
Output Third Order Intercept Point
11.7
25.5
Input Return Loss
Output Return Loss
Noise Figure
Thermal Resistance
Device Operating Voltage
Device Operating Current
10.5
7.5
4.4
145
3.0
52.0
46.0
58.0
Test Conditions: V =3V, I =52mA Typ., OIP Tone Spacing=1MHz, P
per tone=-5dBm, T =25°C, Z =Z =50Ω, Bias Tee Data
L S L
D
D
3
OUT
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.
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
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