Product Description
Stanford Microdevices聮 NGA-486 is a high performance InGaP/
GaAs Heterojunction Bipolar Transistor MMIC Amplifier. A
Darlington configuration designed with InGaP process
technology provides broadband performance up to 5 GHz with
excellent thermal perfomance. The heterojunction increases
breakdown voltage and minimizes leakage current between
junctions. Cancellation of emitter junction non-linearities results
in higher suppression of intermodulation products. At 850 Mhz
and 80mA , the NGA-486 typically provides +39.5 dBm output
IP3, 14.8 dB of gain, and +19 dBm of 1dB compressed power
using a single positive voltage supply. Only 2 DC-blocking
capacitors, a bias resistor and an optional RF choke are required
for operation.
Gain & Return Loss vs. Freq. @T
L
=+25擄C
NGA-486
DC-5 GHz, Cascadable
InGaP/GaAs HBT MMIC Amplifier
Product Features
聲
High Gain : 14.1 dB at 1950 MHz
聲 Cascadable 50 Ohm
聲 Patented InGaP Technology
16
12
Gain (dB)
IRL
GAIN
0
-10
-20
ORL
8
4
0
0
1
2
3
4
Frequency (GHz)
5
6
Return Loss (dB)
聲 Operates From Single Supply
聲 Low Thermal Resistance Package
Applications
聲 Cellular, PCS, CDPD
聲 Wireless Data, SONET
聲 Satellite
Units
dB
dB
dB
dBm
dBm
dBm
dBm
M Hz
dB
dB
dB
V
擄C/W
1950 M Hz
1950 M Hz
1950 M Hz
4.5
Frequency
850 M Hz
1950 M Hz
2400 M Hz
850 M Hz
1950 M Hz
850 M Hz
1950 M Hz
Min.
13.3
Ty p.
14.8
14.1
13.5
19.0
18.2
39.5
34.0
5000
14.5
15.5
4.0
4.8
145
5.2
Max.
16.3
-30
-40
Sy mbol
G
P
1dB
OIP
3
Parameter
Small Signal Gain
Output Pow er at 1dB Compression
Output Third Order Intercept Point
(Pow er out per tone = 0dBm)
Bandw idth
Determined by Return Loss (<-10dB)
IRL
ORL
NF
V
D
R
Th
Input Return Loss
Output Return Loss
Noise Figure
Device Voltage
Thermal Resistance
V
S
= 8 V
R
BIAS
= 39 Ohms
I
D
= 80 mA Typ.
T
L
= 25潞C
Test Conditions:
OIP
3
Tone Spacing = 1 MHz, Pout per tone = 0 dBm
Z
S
= Z
L
= 50 Ohms
The information provided herein is believed to be reliable at press time. Stanford Microdevices assumes no responsibility for inaccuracies or omissions.
Stanford Microdevices assumes no responsibility for the use of this information, and all such information shall be entirely at the user聮s own risk. Prices and specifications are
subject to change without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. Stanford Microdevices does not
authorize or warrant any Stanford Microdevices product for use in life-support devices and/or systems.
Copyright 2000 Stanford Microdevices, Inc. All worldwide rights reserved.
726 Palomar Ave., Sunnyvale, CA 94085
Phone: (800) SMI-MMIC
1
http://www.stanfordmicro.com
EDS-101104 Rev. D
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