1
Product Description
EDS-102435 Rev A
522 Almanor Ave., Sunnyvale, CA 94085 Phone: (800) SMI-MMIC http://www.sirenza.com
The information provided herein is believed to be reliable at press time. Sirenza Microdevices assumes no responsibility for inaccuracies or omissions. Sirenza Microdevices assumes no responsibility for the use of
this information, and all such information shall be entirely at the users 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. Sirenza Microdevices does not authorize or warrant any Sirenza Microdevices product for use in life-support devices and/or systems. Copyright 2001 Sirenza Microdevices, Inc..
All worldwide rights reserved.
Sirenza Microdevices SNA-400 is a GaAs monolithic broad-
band amplifier (MMIC) in die form. This amplifier provides 13dB
of gain when biased at 65mA and 5.0V.
External DC decoupling capacitors determine low frequency re-
sponse. The use of an external resistor allows for bias flexibility
and stability.
These unconditionally stable amplifiers are designed for use as
general purpose 50 ohm gain blocks. Its small size (0.4mm x
0.4mm) and gold metallization make it an ideal choice for use in
hybrid circuits.
The SNA-400 is available in gel pak at 100 devices per con-
tainer. Also available in packaged form (SNA-476 and SNA-
486).
SNA-400
DC-8 GHz, Cascadable
GaAs MMIC Amplifier
Product Features
Cascadable 50 Ohm Gain Block
13dB Gain, +17dBm P1dB
1.5:1 Input and Output VSWR
Operates From Single Supply
Chip Back Is Ground
Applications
PA Driver Amplifier
Cellular, PCS, GSM, UMTS
IF Amplifier
Wireless Data, Satellite
Output Power vs. Frequency
14
16
18
20
22
0.1
0.5
1
1.5
2
4
6
8
10
GHz
dBm
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Test Conditions:
V
S
= 8 V
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D
= 65 mA Typ.
OIP
3
Tone Spacing = 1 MHz, Pout per tone = 0 dBm
R
BIAS
= 47 Ohms
T
L
= 25C
Z
S
= Z
L
= 50 Ohms
2
EDS-102435 Rev A
Preliminary
522 Almanor Ave., Sunnyvale, CA 94085 Phone: (800) SMI-MMIC http://www.sirenza.com
SNA-400 DC-8 GHz Cascadable MMIC Amplifier
Noise Figure vs. Frequency
4
5
6
7
0.1
2.0
4.0
6.0
8.0
|S11| vs. Frequency
|S21| vs. Frequency
|S12| vs. Frequency
|S22| vs. Frequency
TOIP vs. Frequency
-25
-20
-15
-10
-5
0
0.1
0.5
1
1.5
2
4
6
8
10
8
10
12
14
16
0.1
0.5
1
1.5
2
4
6
8
10
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1
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4
6
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10
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0.1
0.5
1
1.5
2
4
6
8
10
28
30
32
34
36
38
0.1
0.5
1
1.5
2
4
6
8
10
GHz
dB
Typical Performance at 25 C (Vds = 5.0V, Ids = 65mA)
GHz
dB
GHz
dBm
GHz
dB
GHz
dB
GHz
dB
Absolute Maximum Ratings
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3
EDS-102435 Rev A
Preliminary
522 Almanor Ave., Sunnyvale, CA 94085 Phone: (800) SMI-MMIC http://www.sirenza.com
SNA-400 DC-8 GHz Cascadable MMIC Amplifier
Typical Application Circuit
For recommended handling, die attach, and bonding methods, see the following application note at
www.sirenza.com.
AN-041 (PDF) Handling of Unpackaged Die
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RF in
RF out
1 uF
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BIAS
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2
3
4
1000
pF
SNA-400
Suggested Bonding Arrangement
(above configuration used for S-parameter data)
Part Number Ordering Information
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Caution: ESD sensitive
Appropriate precautions in handling, packaging
and testing devices must be observed.
Die are shipped per Sirenza application note
AN-039 Visual Criteria For Unpackaged Die
Application Circuit Element Values
Simplified Schematic of MMIC
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