The SGA4186Z 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
12
Gain (dB)
Features
Broadband Operation: DC to
5000MHz
Cascadable 50Ω
Operates from Single Supply
Low Thermal Resistance
Package
PA Driver Amplifier
Cellular, PCS, GSM, UMTS
IF Amplifier
Wireless Data, Satellite
Applications
Gain & Return Loss vs. Frequency
V
D
= 3.2 V, I
D
= 45 mA (Typ.)
16
0
-10
-20
IRL
ORL
SiGe BiCMOS
Si BiCMOS
GAIN
Return Loss (dB)
InGaP HBT
8
4
0
0
1
2
3
Frequency (GHz)
4
5
SiGe HBT
GaAs pHEMT
Si CMOS
Si BJT
GaN HEMT
RF MEMS
-30
-40
T
L
=+25ºC
Parameter
Small Signal Gain
Min.
9.0
Specification
Typ.
10.0
9.2
8.9
14.6
12.4
28.3
25.5
5000
Max.
11.0
Unit
dB
dB
dB
dBm
dBm
dBm
dBm
MHz
850MHz
1950MHz
2400MHz
850MHz
1950MHz
850MHz
1950MHz
>10dB
Condition
Output Power at 1dB Compression
Output Third Intercept Point
Bandwidth Determined by Return
Loss
Input Return Loss
20.3
dB
1950MHz
Output Return Loss
24.4
dB
1950MHz
Noise Figure
5.0
dB
1950MHz
Device Operating Voltage
2.9
3.2
3.5
V
Device Operating Current
41
45
49
mA
Thermal Resistance
97
°C/W
(Junction - Lead)
Test Conditions: V
S
=8V, I
D
=45mA Typ., OIP
3
Tone Spacing=1MHz, P
OUT
per tone=-5dBm, R
BIAS
=110Ω, T
L
=25°C, Z
S
=Z
L
=50Ω
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-
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